{"id":56636,"date":"2025-08-14T21:14:43","date_gmt":"2025-08-14T13:14:43","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/56636.html"},"modified":"2025-08-14T21:14:43","modified_gmt":"2025-08-14T13:14:43","slug":"35-c-stl%e6%a8%a1%e6%9d%bf%e5%ba%934-%e5%87%bd%e6%95%b0%e9%80%82%e9%85%8d%e5%99%a8","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/56636.html","title":{"rendered":"35 C++ STL\u6a21\u677f\u5e934-\u51fd\u6570\u9002\u914d\u5668"},"content":{"rendered":"<h2>C&#043;&#043; STL\u6a21\u677f\u5e934-\u51fd\u6570\u9002\u914d\u5668<\/h2>\n<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>C&#043;&#043; STL\u6a21\u677f\u5e934-\u51fd\u6570\u9002\u914d\u5668<\/li>\n<li>\n<ul>\n<li>\u4e00\u3001\u7ed1\u5b9a\u5668&#xff08;Binder&#xff09;<\/li>\n<li>\u4e8c\u3001\u53d6\u53cd\u5668\u548c\u666e\u901a\u51fd\u6570\u6210\u5458\u51fd\u6570\u9002\u914d\u5668<\/li>\n<li>\u4e09\u3001\u63a8\u8350\u66ff\u6362\u65b9\u6848<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p> C&#043;&#043;\u7684\u51fd\u6570\u9002\u914d\u5668\u4e3b\u8981\u7528\u4e8e\u6269\u5c55\u6216\u7279\u5316<br \/>\n\u51fd\u6570\u5bf9\u8c61(\u4eff\u51fd\u6570)\u7684\u529f\u80fd&#xff0c;\u4f7f\u5176\u9002\u914d\u7b97\u6cd5\u6216\u7279\u5b9a\u9700\u6c42\u3002<\/p>\n<h3>\u4e00\u3001\u7ed1\u5b9a\u5668&#xff08;Binder&#xff09;<\/h3>\n<p>\u5c06\u4e8c\u5143\u51fd\u6570\u5bf9\u8c61\u7684\u4e00\u4e2a\u53c2\u6570\u7ed1\u5b9a\u5230\u56fa\u5b9a\u503c&#xff0c;\u8f6c\u6362\u4e3a\u4e00\u5143\u51fd\u6570\u5bf9\u8c61(\u5c31\u662f\u53cd\u51fd\u6570)&#xff1a;<\/p>\n<li>\n<p>bind1st(\u5df2\u5f03\u7528)<\/p>\n<ul>\n<li>\u7ed1\u5b9a\u4e8c\u5143\u51fd\u6570\u5bf9\u8c61\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u5230\u6307\u5b9a\u503c\u3002<\/li>\n<li>\u793a\u4f8b&#xff1a;bind1st(greater&lt;int&gt;(), 5) \u5c06\u6bd4\u8f83\u503c\u56fa\u5b9a\u4e3a5&#xff0c;\u68c0\u67e5\u5143\u7d20\u662f\u5426\u5927\u4e8e5 \u3002<\/li>\n<li>\u9700\u8981\u4eceunary_function&lt;int, int, void&gt;\u7ee7\u627f<\/li>\n<li>\u53ea\u80fd\u7ed1\u5b9a\u4eff\u51fd\u6570<\/li>\n<li>\u5728C&#043;&#043;11\u540e\u5df2\u5f03\u7528<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>bind2nd(\u5df2\u5f03\u7528)<\/p>\n<ul>\n<li>\u7ed1\u5b9a\u4e8c\u5143\u51fd\u6570\u5bf9\u8c61\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570\u5230\u6307\u5b9a\u503c\u3002<\/li>\n<li>\u793a\u4f8b&#xff1a;bind2nd(less&lt;int&gt;(), 10) \u5c06\u6bd4\u8f83\u503c\u56fa\u5b9a\u4e3a10&#xff0c;\u68c0\u67e5\u5143\u7d20\u662f\u5426\u5c0f\u4e8e10 \u3002<\/li>\n<li>\u9700\u8981\u4ecebinary_function&lt;int, int, void&gt;\u7ee7\u627f<\/li>\n<li>\u53ea\u80fd\u7ed1\u5b9a\u4eff\u51fd\u6570<\/li>\n<li>\u5728C&#043;&#043;11\u540e\u5df2\u5f03\u7528<\/li>\n<\/ul>\n<p>\u793a\u4f8b:<\/p>\n<p> <span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;vector&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;algorithm&gt;<\/span><span class=\"token comment\">\/\/\u5305\u542bfor_each\/find_if\u7b97\u6cd5\u5934\u7684\u6587\u4ef6<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;functional&gt;<\/span><span class=\"token comment\">\/\/\u7cfb\u7edf\u5b9a\u4e49\u7684\u4eff\u51fd\u6570\u548c\u9002\u914d\u5668\u5934\u6587\u4ef6<\/span><\/span><\/p>\n<p><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">Compare<\/span><span class=\"token operator\">:<\/span><span class=\"token base-clause\"><span class=\"token keyword\">public<\/span> std<span class=\"token double-colon punctuation\">::<\/span><span class=\"token class-name\">binary_function<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">bool<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token comment\">\/\/ c&#043;&#043; \u4ee5\u4e0a\u5df2\u7ecf\u79fb\u9664<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n   <span class=\"token keyword\">bool<\/span> <span class=\"token keyword\">operator<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> a<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> b<span class=\"token punctuation\">)<\/span><span class=\"token keyword\">const<\/span><br \/>\n   <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">return<\/span> a<span class=\"token operator\">&gt;<\/span>b<span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>   std<span class=\"token double-colon punctuation\">::<\/span>vector<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> vec <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">6<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">8<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>   <span class=\"token comment\">\/\/ \u67e5\u627e\u7b2c\u4e00\u4e2a\u5c0f\u4e8e5\u7684\u5143\u7d20&#xff08;\u7ed3\u679c\u6307\u54113&#xff09;  \u7ed1\u5b9a\u53c2\u6570\u5230\u4eff\u51fd\u6570\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570<\/span><br \/>\n   <span class=\"token keyword\">auto<\/span> it <span class=\"token operator\">&#061;<\/span> std<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">find_if<\/span><span class=\"token punctuation\">(<\/span>vec<span class=\"token punctuation\">.<\/span><span class=\"token function\">begin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>  vec<span class=\"token punctuation\">.<\/span><span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>  std<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">bind1st<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">Compare<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>it <span class=\"token operator\">!&#061;<\/span> vec<span class=\"token punctuation\">.<\/span><span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token punctuation\">{<\/span><br \/>\n      std<span class=\"token double-colon punctuation\">::<\/span>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u627e\u5230\u7b2c\u4e00\u4e2a\u5c0f\u4e8e 5 \u7684\u5143\u7d20: &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token operator\">*<\/span>it <span class=\"token operator\">&lt;&lt;<\/span> std<span class=\"token double-colon punctuation\">::<\/span>endl<span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token punctuation\">}<\/span><\/p>\n<p>   <span class=\"token comment\">\/\/ \u67e5\u627e\u7b2c\u4e00\u4e2a\u5927\u4e8e5\u7684\u5143\u7d20&#xff08;\u7ed3\u679c\u6307\u54116&#xff09; \u7ed1\u5b9a\u53c2\u6570\u5230\u4eff\u51fd\u6570\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570<\/span><br \/>\n   it <span class=\"token operator\">&#061;<\/span> std<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">find_if<\/span><span class=\"token punctuation\">(<\/span>vec<span class=\"token punctuation\">.<\/span><span class=\"token function\">begin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>  vec<span class=\"token punctuation\">.<\/span><span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>  std<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">bind2nd<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">Compare<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>it <span class=\"token operator\">!&#061;<\/span> vec<span class=\"token punctuation\">.<\/span><span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token punctuation\">{<\/span><br \/>\n      std<span class=\"token double-colon punctuation\">::<\/span>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u627e\u5230\u7b2c\u4e00\u4e2a\u5927\u4e8e 5 \u7684\u5143\u7d20: &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token operator\">*<\/span>it <span class=\"token operator\">&lt;&lt;<\/span> std<span class=\"token double-colon punctuation\">::<\/span>endl<span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<li>\n<p>bind<\/p>\n<\/li>\n<ul>\n<li>\u7ed1\u5b9a\u53c2\u6570\u5230\u51fd\u6570\u7684\u4efb\u610f\u4f4d\u7f6e\u3002<\/li>\n<li>\u53ef\u7ed1\u5b9a\u6210\u5458\u51fd\u6570\u3001\u666e\u901a\u51fd\u6570\u53caLambda\u8868\u8fbe\u5f0f<\/li>\n<\/ul>\n<p>[\u793a\u4f8b]<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;vector&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;algorithm&gt;<\/span><span class=\"token comment\">\/\/\u5305\u542bfor_each\/find_if\u7b97\u6cd5\u5934\u7684\u6587\u4ef6<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;functional&gt;<\/span><span class=\"token comment\">\/\/\u7cfb\u7edf\u5b9a\u4e49\u7684\u4eff\u51fd\u6570\u548c\u9002\u914d\u5668\u5934\u6587\u4ef6<\/span><\/span><\/p>\n<p><span class=\"token keyword\">bool<\/span> <span class=\"token function\">Compare<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> a<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> b<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n   <span class=\"token keyword\">return<\/span> a<span class=\"token operator\">&gt;<\/span>b<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token function\">show<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> a<span class=\"token punctuation\">,<\/span><span class=\"token keyword\">char<\/span> c<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">float<\/span> f<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n   std<span class=\"token double-colon punctuation\">::<\/span>cout<span class=\"token operator\">&lt;&lt;<\/span>a<span class=\"token operator\">&lt;&lt;<\/span><span class=\"token string\">&#034; &#034;<\/span><span class=\"token operator\">&lt;&lt;<\/span>c<span class=\"token operator\">&lt;&lt;<\/span><span class=\"token string\">&#034; &#034;<\/span><span class=\"token operator\">&lt;&lt;<\/span>f<span class=\"token operator\">&lt;&lt;<\/span>std<span class=\"token double-colon punctuation\">::<\/span>endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>   std<span class=\"token double-colon punctuation\">::<\/span>vector<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> vec <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">6<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">8<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>   <span class=\"token comment\">\/\/ \u67e5\u627e\u7b2c\u4e00\u4e2a\u5c0f\u4e8e5\u7684\u5143\u7d20&#xff08;\u7ed3\u679c\u6307\u54113&#xff09;  \u7ed1\u5b9a\u53c2\u6570\u5230\u4eff\u51fd\u6570\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570<\/span><br \/>\n   <span class=\"token keyword\">auto<\/span> it <span class=\"token operator\">&#061;<\/span> std<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">find_if<\/span><span class=\"token punctuation\">(<\/span>vec<span class=\"token punctuation\">.<\/span><span class=\"token function\">begin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>  vec<span class=\"token punctuation\">.<\/span><span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>  std<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span>Compare<span class=\"token punctuation\">,<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span>std<span class=\"token double-colon punctuation\">::<\/span>placeholders<span class=\"token double-colon punctuation\">::<\/span>_1<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>it <span class=\"token operator\">!&#061;<\/span> vec<span class=\"token punctuation\">.<\/span><span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token punctuation\">{<\/span><br \/>\n      std<span class=\"token double-colon punctuation\">::<\/span>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u627e\u5230\u7b2c\u4e00\u4e2a\u5c0f\u4e8e 5 \u7684\u5143\u7d20: &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token operator\">*<\/span>it <span class=\"token operator\">&lt;&lt;<\/span> std<span class=\"token double-colon punctuation\">::<\/span>endl<span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token punctuation\">}<\/span><\/p>\n<p>   <span class=\"token comment\">\/\/ \u67e5\u627e\u7b2c\u4e00\u4e2a\u5927\u4e8e5\u7684\u5143\u7d20&#xff08;\u7ed3\u679c\u6307\u54116&#xff09; \u7ed1\u5b9a\u53c2\u6570\u5230\u4eff\u51fd\u6570\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570<\/span><br \/>\n      it <span class=\"token operator\">&#061;<\/span> std<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">find_if<\/span><span class=\"token punctuation\">(<\/span>vec<span class=\"token punctuation\">.<\/span><span class=\"token function\">begin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>  vec<span class=\"token punctuation\">.<\/span><span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>  std<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span>Compare<span class=\"token punctuation\">,<\/span> std<span class=\"token double-colon punctuation\">::<\/span>placeholders<span class=\"token double-colon punctuation\">::<\/span>_1<span class=\"token punctuation\">,<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>it <span class=\"token operator\">!&#061;<\/span> vec<span class=\"token punctuation\">.<\/span><span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token punctuation\">{<\/span><br \/>\n         std<span class=\"token double-colon punctuation\">::<\/span>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u627e\u5230\u7b2c\u4e00\u4e2a\u5927\u4e8e 5 \u7684\u5143\u7d20: &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token operator\">*<\/span>it <span class=\"token operator\">&lt;&lt;<\/span> std<span class=\"token double-colon punctuation\">::<\/span>endl<span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span> <\/p>\n<p>   <span class=\"token function\">show<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token char\">&#039;A&#039;<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3.14f<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token keyword\">auto<\/span> fun <span class=\"token operator\">&#061;<\/span> std<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span>show<span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token char\">&#039;C&#039;<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2.15f<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token function\">fun<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u8f93\u51fa\u662f 3 C 2.15<\/span><br \/>\n   <span class=\"token function\">fun<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token char\">&#039;H&#039;<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2.14<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u8f93\u51fa\u8fd8\u662f 3 C 2.15 &#xff0c;\u59cb\u7ec8\u662f\u7ed1\u5b9a\u7684\u53c2\u6570<\/span><br \/>\n   <span class=\"token function\">show<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token char\">&#039;A&#039;<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3.14f<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/2 A 3.14   \u7ed1\u5b9a\u4e0d\u4f1a\u6539\u53d8\u539f\u6765\u7684\u5b9e\u9645\u503c\u3002<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<ul>\n<li>\n<p>\u5982\u679c\u67d0\u4e2a\u4f4d\u7f6e\u7684\u53c2\u6570\u4e0d\u8981\u7ed1\u5b9a\u53ef\u4ee5\u7528std::placeholders::_N\u5360\u4f4d\u7b26,placeholders\u662f\u4e00\u4e2a\u547d\u540d\u7a7a\u95f4&#xff0c;\u91cc\u9762\u5b9a\u4e49\u4e86_1\u5230_20\u4e2a\u5360\u4f4d\u7b26\u5bf9\u8c61<\/p>\n<\/li>\n<li>\n<p>\u5360\u4f4d\u7b26\u5360\u7684\u662f\u4f20\u53c2\u65f6\u53ef\u4ee5\u6539\u53d8\u7684&#xff0c;_1\u662f\u7b2c\u4e00\u4e2a\u53c2\u6570_2\u662f\u7b2c\u4e8c\u4e2a\u53c2\u6570&#xff0c;_3\u662f\u7b2c\u4e09\u4e2a\u53c2\u6570\u2026\u2026<\/p>\n<\/li>\n<li>\n<p>\u5360\u4f4d\u7b26\u7684\u987a\u5e8f\u8981\u548c\u51fd\u6570\u7684\u987a\u5e8f\u4e00\u81f4&#xff0c;\u7ed3\u679c\u624d\u80fd\u4fdd\u8bc1\u6b63\u786e<\/p>\n<\/li>\n<li>\n<p>\u53c2\u6570\u7c7b\u578b\u4e00\u81f4\u6027,std::placeholders::_3\u8868\u793a\u4f20\u53c2\u65f6\u7b2c\u4e09\u4e2a\u53c2\u6570\u6240\u653e\u7684\u4f4d\u7f6e<\/p>\n<p> <span class=\"token comment\">\/\/\u7b2c\u4e09\u4e2a\u53c2\u6570\u653e\u5230\u4e8c\u4e2a\u4f4d\u7f6e<\/span><br \/>\nstd<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span>show<span class=\"token punctuation\">,<\/span>std<span class=\"token double-colon punctuation\">::<\/span>placeholders<span class=\"token double-colon punctuation\">::<\/span>_1<span class=\"token punctuation\">,<\/span>std<span class=\"token double-colon punctuation\">::<\/span>placeholders<span class=\"token double-colon punctuation\">::<\/span>_3<span class=\"token punctuation\">,<\/span><span class=\"token number\">9<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u7b2c\u4e09\u4e2a\u53c2\u6570\u653e\u5230\u7b2c\u4e00\u4e2a\u4f4d\u7f6e<\/span><br \/>\nstd<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span>show<span class=\"token punctuation\">,<\/span>std<span class=\"token double-colon punctuation\">::<\/span>placeholders<span class=\"token double-colon punctuation\">::<\/span>_3<span class=\"token punctuation\">,<\/span>std<span class=\"token double-colon punctuation\">::<\/span>placeholders<span class=\"token double-colon punctuation\">::<\/span>_1<span class=\"token punctuation\">,<\/span><span class=\"token number\">9<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n <\/li>\n<li>\n<p>std::bind\u751f\u6210\u7684\u51fd\u6570\u4f1a\u5ffd\u7565\u591a\u4f59\u53c2\u6570&#xff0c;\u4f46\u9700\u786e\u4fdd\u5fc5\u8981\u53c2\u6570\u5df2\u7ed1\u5b9a\u3002<\/p>\n<p> <span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;vector&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;algorithm&gt;<\/span><span class=\"token comment\">\/\/\u5305\u542bfor_each\/find_if\u7b97\u6cd5\u5934\u7684\u6587\u4ef6<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;functional&gt;<\/span><span class=\"token comment\">\/\/\u7cfb\u7edf\u5b9a\u4e49\u7684\u4eff\u51fd\u6570\u548c\u9002\u914d\u5668\u5934\u6587\u4ef6<\/span><\/span><\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token function\">show<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> n1<span class=\"token punctuation\">,<\/span><span class=\"token keyword\">int<\/span> n2<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> n3<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n   std<span class=\"token double-colon punctuation\">::<\/span>cout<span class=\"token operator\">&lt;&lt;<\/span>n1<span class=\"token operator\">&lt;&lt;<\/span><span class=\"token string\">&#034; &#034;<\/span><span class=\"token operator\">&lt;&lt;<\/span>n2<span class=\"token operator\">&lt;&lt;<\/span><span class=\"token string\">&#034; &#034;<\/span><span class=\"token operator\">&lt;&lt;<\/span>n3<span class=\"token operator\">&lt;&lt;<\/span>std<span class=\"token double-colon punctuation\">::<\/span>endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>   <span class=\"token function\">show<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/1 2 3<\/span><\/p>\n<p>   <span class=\"token comment\">\/\/\u53c2\u6570\u7b2c\u4e00\u4e2a\u7528\u5360\u4f4d\u7b26\u5360\u4e86&#xff0c;\u662f\u53ef\u4ee5\u6539\u53d8\u7684&#xff0c;\u7b2c\u4e8c\u4e2a\u548c\u7b2c\u4e09\u4e2a\u88ab\u7ed1\u5b9a\u662f\u56fa\u5b9a\u503c&#xff0c;\u4f20\u4efb\u4f55\u53c2\u6570\u90fd\u4e0d\u6539\u53d8<\/span><br \/>\n   <span class=\"token keyword\">auto<\/span> fun <span class=\"token operator\">&#061;<\/span> std<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span>show<span class=\"token punctuation\">,<\/span>std<span class=\"token double-colon punctuation\">::<\/span>placeholders<span class=\"token double-colon punctuation\">::<\/span>_1<span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token function\">fun<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">30<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u8f93\u51fa\u662f 30 4 5<\/span><br \/>\n   <span class=\"token function\">fun<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">30<\/span><span class=\"token punctuation\">,<\/span><span class=\"token char\">&#039;G&#039;<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">8<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u8f93\u51fa\u662f 30 4 5<\/span><\/p>\n<p>   std<span class=\"token double-colon punctuation\">::<\/span>cout<span class=\"token operator\">&lt;&lt;<\/span><span class=\"token string\">&#034;\\\\n&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token keyword\">auto<\/span> fun1 <span class=\"token operator\">&#061;<\/span> std<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span>show<span class=\"token punctuation\">,<\/span>std<span class=\"token double-colon punctuation\">::<\/span>placeholders<span class=\"token double-colon punctuation\">::<\/span>_1<span class=\"token punctuation\">,<\/span>std<span class=\"token double-colon punctuation\">::<\/span>placeholders<span class=\"token double-colon punctuation\">::<\/span>_2<span class=\"token punctuation\">,<\/span><span class=\"token number\">9<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token function\">fun1<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/4 5 9    &#8211;show(4, 5, 9)   <\/span><br \/>\n   <span class=\"token function\">fun1<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">6<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">7<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">8<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">&#034;&#8230;..&#034;<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">&#034;\u4f60\u597d&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/1 2 9    &#8211;show(1, 2, 9)   <\/span><br \/>\n   <span class=\"token comment\">\/\/ fun1(4);\/\/ \u9519\u8bef\u81f3\u5c11\u4e24\u4e2a\u53c2\u6570&#xff0c;\u5360\u4f4d\u7684\u5fc5\u987b\u4f20\u53c2<\/span><\/p>\n<p>   std<span class=\"token double-colon punctuation\">::<\/span>cout<span class=\"token operator\">&lt;&lt;<\/span><span class=\"token string\">&#034;\\\\n&#034;<\/span><span class=\"token punctuation\">;<\/span>    <span class=\"token comment\">\/\/\u8c03\u6362\u4f4d\u7f6e<\/span><br \/>\n   <span class=\"token keyword\">auto<\/span> fun2 <span class=\"token operator\">&#061;<\/span> std<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span>show<span class=\"token punctuation\">,<\/span>std<span class=\"token double-colon punctuation\">::<\/span>placeholders<span class=\"token double-colon punctuation\">::<\/span>_2<span class=\"token punctuation\">,<\/span>std<span class=\"token double-colon punctuation\">::<\/span>placeholders<span class=\"token double-colon punctuation\">::<\/span>_1<span class=\"token punctuation\">,<\/span><span class=\"token number\">9<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token function\">fun2<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/5 4 9    &#8211;show(5, 4, 9)  <\/span><br \/>\n   <span class=\"token function\">fun2<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/4 5 9    &#8211;show(4, 5, 9)  <\/span><\/p>\n<p>   std<span class=\"token double-colon punctuation\">::<\/span>cout<span class=\"token operator\">&lt;&lt;<\/span><span class=\"token string\">&#034;\\\\n&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token keyword\">auto<\/span> fun3 <span class=\"token operator\">&#061;<\/span> std<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span>show<span class=\"token punctuation\">,<\/span>std<span class=\"token double-colon punctuation\">::<\/span>placeholders<span class=\"token double-colon punctuation\">::<\/span>_1<span class=\"token punctuation\">,<\/span><span class=\"token number\">9<\/span><span class=\"token punctuation\">,<\/span>std<span class=\"token double-colon punctuation\">::<\/span>placeholders<span class=\"token double-colon punctuation\">::<\/span>_2<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token function\">fun3<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/4 9 5    &#8211;show(4, 5, 9)   <\/span><\/p>\n<p>   std<span class=\"token double-colon punctuation\">::<\/span>cout<span class=\"token operator\">&lt;&lt;<\/span><span class=\"token string\">&#034;\\\\n&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token keyword\">auto<\/span> fun4 <span class=\"token operator\">&#061;<\/span> std<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span>show<span class=\"token punctuation\">,<\/span>std<span class=\"token double-colon punctuation\">::<\/span>placeholders<span class=\"token double-colon punctuation\">::<\/span>_1<span class=\"token punctuation\">,<\/span><span class=\"token number\">9<\/span><span class=\"token punctuation\">,<\/span>std<span class=\"token double-colon punctuation\">::<\/span>placeholders<span class=\"token double-colon punctuation\">::<\/span>_3<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token comment\">\/\/ fun4(4,5);\/\/\u9519\u8bef &#xff0c;\u5c11\u4e00\u4e2a\u53c2\u6570 &#xff0c;\u6700\u5c11\u4e09\u4e2a\u53c2\u6570<\/span><br \/>\n   <span class=\"token function\">fun4<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">9<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/4 9 9   &#8211;show(4, 9, 9)   <\/span><\/p>\n<p>   std<span class=\"token double-colon punctuation\">::<\/span>cout<span class=\"token operator\">&lt;&lt;<\/span><span class=\"token string\">&#034;\\\\n&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token keyword\">auto<\/span> fun5<span class=\"token operator\">&#061;<\/span> std<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span>show<span class=\"token punctuation\">,<\/span>std<span class=\"token double-colon punctuation\">::<\/span>placeholders<span class=\"token double-colon punctuation\">::<\/span>_1<span class=\"token punctuation\">,<\/span>std<span class=\"token double-colon punctuation\">::<\/span>placeholders<span class=\"token double-colon punctuation\">::<\/span>_3<span class=\"token punctuation\">,<\/span><span class=\"token number\">9<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token function\">fun5<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">7<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/4 7 9   &#8211;show(4, 7, 9)<\/span><br \/>\n   <span class=\"token function\">fun5<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">7<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/4 7 9   &#8211;show(4, 7, 9)<\/span><br \/>\n   <span class=\"token comment\">\/\/ fun5(4,5);\/\/ \u9519\u8bef &#xff0c;\u5c11\u4e00\u4e2a\u53c2\u6570  &#xff0c;\u6700\u5c11\u4e09\u4e2a\u53c2\u6570<\/span><\/p>\n<p>   std<span class=\"token double-colon punctuation\">::<\/span>cout<span class=\"token operator\">&lt;&lt;<\/span><span class=\"token string\">&#034;\\\\n&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token keyword\">auto<\/span> fun6<span class=\"token operator\">&#061;<\/span> std<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span>show<span class=\"token punctuation\">,<\/span>std<span class=\"token double-colon punctuation\">::<\/span>placeholders<span class=\"token double-colon punctuation\">::<\/span>_2<span class=\"token punctuation\">,<\/span>std<span class=\"token double-colon punctuation\">::<\/span>placeholders<span class=\"token double-colon punctuation\">::<\/span>_2<span class=\"token punctuation\">,<\/span><span class=\"token number\">9<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token function\">fun6<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">7<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/5 5 9   &#8211;show(5, 5, 9)<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<li>\n<p>\u51fd\u6570\u91cd\u8f7d\u9700\u663e\u5f0f\u6307\u5b9a\u51fd\u6570\u7c7b\u578b \u51fd\u6570\u91cd\u8f7d&#xff0c;std::bind\u65e0\u6cd5\u81ea\u52a8\u63a8\u65ad\u91cd\u8f7d\u7248\u672c&#xff0c;\u5bfc\u81f4\u7f16\u8bd1\u5668\u89e3\u6790\u5931\u8d25 \u89e3\u51b3\u65b9\u6848&#xff1a;\u663e\u5f0f\u6307\u5b9a\u51fd\u6570\u7c7b\u578b&#xff0c;\u4f8b\u5982\u4f7f\u7528static_cast\u6216\u6a21\u677f\u53c2\u6570\u3002 \u6ce8\u610f\u51fd\u6570\u540d\u8981\u52a0\u62ec\u53f7<\/p>\n<p> <span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;functional&gt;<\/span><span class=\"token comment\">\/\/\u7cfb\u7edf\u5b9a\u4e49\u7684\u4eff\u51fd\u6570\u548c\u9002\u914d\u5668\u5934\u6587\u4ef6<\/span><\/span><\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token function\">show<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> a<span class=\"token punctuation\">,<\/span><span class=\"token keyword\">char<\/span> c<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">float<\/span> f<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n   std<span class=\"token double-colon punctuation\">::<\/span>cout<span class=\"token operator\">&lt;&lt;<\/span>a<span class=\"token operator\">&lt;&lt;<\/span><span class=\"token string\">&#034; &#034;<\/span><span class=\"token operator\">&lt;&lt;<\/span>c<span class=\"token operator\">&lt;&lt;<\/span><span class=\"token string\">&#034; &#034;<\/span><span class=\"token operator\">&lt;&lt;<\/span>f<span class=\"token operator\">&lt;&lt;<\/span>std<span class=\"token double-colon punctuation\">::<\/span>endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span> <\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token function\">show<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> n1<span class=\"token punctuation\">,<\/span><span class=\"token keyword\">int<\/span> n2<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> n3<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n   std<span class=\"token double-colon punctuation\">::<\/span>cout<span class=\"token operator\">&lt;&lt;<\/span>n1<span class=\"token operator\">&lt;&lt;<\/span><span class=\"token string\">&#034; &#034;<\/span><span class=\"token operator\">&lt;&lt;<\/span>n2<span class=\"token operator\">&lt;&lt;<\/span><span class=\"token string\">&#034; &#034;<\/span><span class=\"token operator\">&lt;&lt;<\/span>n3<span class=\"token operator\">&lt;&lt;<\/span>std<span class=\"token double-colon punctuation\">::<\/span>endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>   <span class=\"token function\">show<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token char\">&#039;A&#039;<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3.14f<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/2 A 3.14<\/span><\/p>\n<p>   <span class=\"token comment\">\/\/ \u663e\u5f0f\u6307\u5b9a\u7ed1\u5b9a\u51fd\u6570 show(int a,char c, float f)<\/span><br \/>\n   <span class=\"token keyword\">auto<\/span> fun <span class=\"token operator\">&#061;<\/span> std<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span><span class=\"token generic-function\"><span class=\"token function\">static_cast<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">char<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">float<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span>show<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>std<span class=\"token double-colon punctuation\">::<\/span>placeholders<span class=\"token double-colon punctuation\">::<\/span>_1<span class=\"token punctuation\">,<\/span><span class=\"token char\">&#039;C&#039;<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2.15f<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token function\">fun<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">30<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u8f93\u51fa\u662f 30 C 2.15<\/span><\/p>\n<p>   <span class=\"token comment\">\/\/ \u663e\u5f0f\u6307\u5b9a\u7ed1\u5b9a\u51fd\u6570 show(int n1,int n2, int n3)<\/span><br \/>\n   std<span class=\"token double-colon punctuation\">::<\/span>cout<span class=\"token operator\">&lt;&lt;<\/span><span class=\"token string\">&#034;\\\\n&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token keyword\">auto<\/span> fun1 <span class=\"token operator\">&#061;<\/span> std<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span><span class=\"token generic-function\"><span class=\"token function\">static_cast<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">char<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">float<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span>show<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>std<span class=\"token double-colon punctuation\">::<\/span>placeholders<span class=\"token double-colon punctuation\">::<\/span>_1<span class=\"token punctuation\">,<\/span><span class=\"token char\">&#039;b&#039;<\/span><span class=\"token punctuation\">,<\/span>std<span class=\"token double-colon punctuation\">::<\/span>placeholders<span class=\"token double-colon punctuation\">::<\/span>_2<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token function\">fun1<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">15<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/15 b 1<\/span><br \/>\n   <span class=\"token function\">fun1<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">15<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/15 b 1  <\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<\/ul>\n<p>std::bind \u4ecd\u662f\u5408\u6cd5\u4e14\u6709\u6548\u7684\u5de5\u5177,\u4f46\u5bfc\u81f4\u590d\u6742\u903b\u8f91\u6613\u5bfc\u81f4\u4ee3\u7801\u5197\u957f\u3002\u5efa\u8bae\u6539\u7528\u66f4\u7b80\u6d01\u3001\u76f4\u89c2&#xff0c;\u4e14\u7c7b\u578b\u5b89\u5168\u7684Lambda \u8868\u8fbe\u5f0f.<\/p>\n<h3>\u4e8c\u3001\u53d6\u53cd\u5668\u548c\u666e\u901a\u51fd\u6570\u6210\u5458\u51fd\u6570\u9002\u914d\u5668<\/h3>\n<p>\u8c13\u8bcd(predicate ) \u8fd4\u56de\u503c\u662fbool\u7c7b\u578b\u7684\u4eff\u51fd\u6570\u3002\u4e00\u4e2a\u53c2\u6570\u7684\u662f\u4e00\u5143\u8c13\u8bcd&#xff0c;\u4e24\u4e2a\u53c2\u6570\u7684\u662f\u4e8c\u5143\u8c13\u8bcd\u3002<\/p>\n<p>\u7ffb\u8f6c\u51fd\u6570\u5bf9\u8c61\u7684\u8fd4\u56de\u503c\u903b\u8f91&#xff1a;<\/p>\n<li>\n<p>not1<\/p>\n<ul>\n<li>\u53d6\u53cd\u4e00\u5143\u8c13\u8bcd\u7684\u8fd4\u56de\u503c\u3002<\/li>\n<li>\u793a\u4f8b&#xff1a;not1(bind2nd(greater&lt;int&gt;(), 5)) \u7b5b\u9009\u4e0d\u5927\u4e8e5\u7684\u5143\u7d20\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>not2<\/p>\n<ul>\n<li>\u53d6\u53cd\u4e8c\u5143\u8c13\u8bcd\u7684\u8fd4\u56de\u503c\u3002<\/li>\n<li>\u793a\u4f8b&#xff1a;not2(equal_to&lt;int&gt;()) \u5224\u65ad\u4e24\u4e2a\u5143\u7d20\u662f\u5426\u4e0d\u76f8\u7b49\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u666e\u901a\u51fd\u6570\u9002\u914d\u5668ptr_fun<\/p>\n<ul>\n<li>\u5c06\u666e\u901a\u51fd\u6570\u8f6c\u6362\u4e3a\u53ef\u88abSTL\u7b97\u6cd5\u8c03\u7528\u7684\u51fd\u6570\u5bf9\u8c61\u3002<\/li>\n<li>\u793a\u4f8b&#xff1a;bind2nd(ptr_fun(myPrintInt01), 1000) \u7ed1\u5b9a\u666e\u901a\u51fd\u6570\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e3a1000 \u3002<\/li>\n<\/ul>\n<p>not1&#xff0c;not2&#xff0c;ptr_fun\u90fd\u662f\u73b0\u4ee3C&#043;&#043;\u4e2d\u5df2\u5f03\u7528\u7684\u529f\u80fd&#xff0c;\u5efa\u8bae\u6539\u7528\u66f4\u7b80\u6d01\u3001\u76f4\u89c2&#xff0c;\u4e14\u7c7b\u578b\u5b89\u5168\u7684Lambda \u8868\u8fbe\u5f0f.<\/p>\n<p> auto isOdd &#061; [](int n) { return !isEven(n); };  \/\/ \u76f4\u63a5\u53d6\u53cd\n <\/li>\n<li>\n<p>\u6210\u5458\u51fd\u6570\u9002\u914d\u5668 \u7528\u4e8e\u5c06\u7c7b\u6210\u5458\u51fd\u6570\u8f6c\u6362\u4e3a\u53ef\u88abSTL\u7b97\u6cd5\u8c03\u7528\u7684\u51fd\u6570\u5bf9\u8c61&#xff1a;<\/p>\n<li>mem_fun\n<ul>\n<li>\u9002\u914d\u6307\u5411\u5bf9\u8c61\u6307\u9488\u7684\u6210\u5458\u51fd\u6570\u3002<\/li>\n<li>\u793a\u4f8b&#xff1a;for_each(v.begin(), v.end(), mem_fun(&amp;Person::show)) \u8c03\u7528\u5bf9\u8c61\u6307\u9488\u7684\u6210\u5458\u51fd\u6570\u3002<\/li>\n<\/ul>\n<\/li>\n<li>mem_fun_ref\n<ul>\n<li>\u9002\u914d\u5f15\u7528\u7c7b\u578b\u7684\u6210\u5458\u51fd\u6570\u3002<\/li>\n<\/ul>\n<\/li>\n<ul>\n<li>\u793a\u4f8b&#xff1a;for_each(v.begin(), v.end(), mem_fun_ref(&amp;Person::show)) \u8c03\u7528\u5bf9\u8c61\u5f15\u7528\u7684\u6210\u5458\u51fd\u6570\u3002<\/li>\n<li>\u6b64\u4e24\u8005\u90fd\u5df2\u5f03\u7528\u5efa\u8bae\u6539\u7528Lambda \u8868\u8fbe\u5f0f.<\/li>\n<\/ul>\n<\/li>\n<h3>\u4e09\u3001\u63a8\u8350\u66ff\u6362\u65b9\u6848<\/h3>\n<li>\n<p>Lambda \u8868\u8fbe\u5f0f auto predicate &#061; [](int a) { return compare(a, 2); }; \/\/ \u76f4\u63a5\u5185\u8054\u903b\u8f91<\/p>\n<\/li>\n<li>\n<p>std::function \u7ed3\u5408 Lambda<\/p>\n<p> std<span class=\"token double-colon punctuation\">::<\/span>function<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">bool<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&gt;<\/span> predicate <span class=\"token operator\">&#061;<\/span><br \/>\n   <span class=\"token punctuation\">[<\/span> <span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> a<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token function\">compare<\/span><span class=\"token punctuation\">(<\/span>a<span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u663e\u5f0f\u7c7b\u578b\u58f0\u660e <\/span><\/p>\n<ul>\n<li>\n<p>\u5fc5\u987b\u663e\u5f0f\u58f0\u660e std::function \u7684\u53c2\u6570\u548c\u8fd4\u56de\u7c7b\u578b&#xff0c;\u5426\u5219\u4f1a\u5bfc\u81f4\u7f16\u8bd1\u9519\u8bef\u3002 \u793a\u4f8b&#xff1a;std::function&lt;void(int)&gt; func &#061; print;&#xff08;print \u51fd\u6570\u9700\u63a5\u53d7 int \u53c2\u6570&#xff09;\u3002<\/p>\n<\/li>\n<li>\n<p>\u4f18\u5316\u5efa\u8bae&#xff1a;\u5728\u6027\u80fd\u654f\u611f\u573a\u666f\u4e2d&#xff0c;\u4f18\u5148\u4f7f\u7528\u6a21\u677f\u6216\u76f4\u63a5\u4f20\u9012 Lambda\u3002<\/p>\n<\/li>\n<li>\n<p>std::function \u53ef\u4ee5\u88ab\u8d4b\u503c\u4e3a nullptr&#xff0c;\u8c03\u7528\u7a7a\u51fd\u6570\u5bf9\u8c61\u4f1a\u89e6\u53d1 std::bad_function_call \u5f02\u5e38\u3002 \u793a\u4f8b&#xff1a;<\/p>\n<p> std<span class=\"token double-colon punctuation\">::<\/span>function<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&gt;<\/span> func <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>func<span class=\"token punctuation\">)<\/span> <span class=\"token function\">func<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u9700\u8981\u663e\u5f0f\u68c0\u67e5 <\/span>\n <\/li>\n<li>\n<p>\u4e0d\u652f\u6301\u5b58\u50a8 const \u6216 volatile \u6210\u5458\u51fd\u6570&#xff08;\u9700\u901a\u8fc7 std::bind \u9002\u914d&#xff09;\u3002<\/p>\n<\/li>\n<li>\n<p>\u907f\u514d\u8fc7\u5ea6\u4f7f\u7528- \u5bf9\u4e8e\u5df2\u77e5\u7c7b\u578b\u7684\u51fd\u6570&#xff0c;\u76f4\u63a5\u4f7f\u7528\u6a21\u677f\u6216\u51fd\u6570\u6307\u9488\u66f4\u9ad8\u6548\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u7528\u6cd5\u793a\u4f8b<\/p>\n<li>\n<p>\u8f6c\u6362\u666e\u901a\u51fd\u6570<\/p>\n<p> <span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;functional&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> n<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> std<span class=\"token double-colon punctuation\">::<\/span>cout <span class=\"token operator\">&lt;&lt;<\/span> n <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034; &#034;<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n   std<span class=\"token double-colon punctuation\">::<\/span>function<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&gt;<\/span> func <span class=\"token operator\">&#061;<\/span> print<span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u76f4\u63a5\u8d4b\u503c\u666e\u901a\u51fd\u6570 <\/span><br \/>\n   <span class=\"token function\">func<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u8f93\u51fa&#xff1a;5 <\/span><br \/>\n   <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<li>\n<p>\u5b58\u50a8 Lambda \u8868\u8fbe\u5f0f<\/p>\n<p> <span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;functional&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n   std<span class=\"token double-colon punctuation\">::<\/span>function<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&gt;<\/span> add <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> a<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> b<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">return<\/span> a <span class=\"token operator\">&#043;<\/span> b<span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n   std<span class=\"token double-colon punctuation\">::<\/span>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> std<span class=\"token double-colon punctuation\">::<\/span>endl<span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u8f93\u51fa&#xff1a;7 <\/span><br \/>\n   <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<li>\n<p>\u5b58\u50a8\u6210\u5458\u51fd\u6570<\/p>\n<p> <span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;functional&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Person<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n   <span class=\"token keyword\">void<\/span> <span class=\"token function\">show<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token punctuation\">{<\/span> std<span class=\"token double-colon punctuation\">::<\/span>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;Hello&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> std<span class=\"token double-colon punctuation\">::<\/span>endl<span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n   Person p<span class=\"token punctuation\">;<\/span><br \/>\n   std<span class=\"token double-colon punctuation\">::<\/span>function<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">(<\/span>Person<span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&gt;<\/span> func <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&amp;<\/span>Person<span class=\"token double-colon punctuation\">::<\/span>show<span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token function\">func<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>p<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u8f93\u51fa&#xff1a;Hello <\/span><br \/>\n   <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<li>\n<p>\u5b58\u50a8\u5176\u4ed6\u51fd\u6570\u5bf9\u8c61<\/p>\n<p> <span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;functional&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><\/p>\n<p><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">Adder<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n   <span class=\"token keyword\">int<\/span> <span class=\"token keyword\">operator<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> a<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> b<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">return<\/span> a <span class=\"token operator\">&#043;<\/span> b<span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n   std<span class=\"token double-colon punctuation\">::<\/span>function<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&gt;<\/span> func <span class=\"token operator\">&#061;<\/span> Adder<span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n   std<span class=\"token double-colon punctuation\">::<\/span>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token function\">func<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> std<span class=\"token double-colon punctuation\">::<\/span>endl<span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u8f93\u51fa&#xff1a;5 <\/span><br \/>\n   <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<\/li>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb605\u6b21\uff0c\u70b9\u8d5e10\u6b21\uff0c\u6536\u85cf19\u6b21\u3002\u672c\u6587\u4ecb\u7ecd\u4e86C++ 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