{"id":106616,"date":"2026-09-17T19:56:35","date_gmt":"2026-09-17T11:56:35","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/106616.html"},"modified":"2026-09-17T19:56:35","modified_gmt":"2026-09-17T11:56:35","slug":"c-lambda%e8%a1%a8%e8%be%be%e5%bc%8f%e6%b7%b1%e5%85%a5%e5%85%a8%e8%a7%a3%e6%9e%90%ef%bc%8c%e9%9d%a2%e8%af%95%e5%bf%85%e8%80%83%ef%bc%81","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/106616.html","title":{"rendered":"C++ Lambda\u8868\u8fbe\u5f0f\u6df1\u5165\u5168\u89e3\u6790\uff0c\u9762\u8bd5\u5fc5\u8003\uff01"},"content":{"rendered":"

C++ Lambda\u8868\u8fbe\u5f0f\u6df1\u5165\u5168\u89e3\u6790\uff0c\u9762\u8bd5\u5fc5\u8003\uff01<\/h2>\n

Lambda\u662fC++11\u5f15\u5165\u7684\u533f\u540d\u51fd\u6570\u7279\u6027\uff0c\u73b0\u4ee3C++\u7f16\u7a0b\u5fc5\u5907\u6280\u80fd\u3002\u672c\u6587\u4ece\u57fa\u7840\u5230\u9ad8\u7ea7\uff0c\u5e2e\u4f60\u5f7b\u5e95\u638c\u63e1Lambda\u3002<\/p>\n

\u4e00\u3001Lambda\u57fa\u7840\u8bed\u6cd5<\/h3>\n

1.1 \u57fa\u672c\u5f62\u5f0f<\/h4>\n

\/\/ \u5b8c\u6574\u8bed\u6cd5<\/span>
\n[<\/span>capture–<\/span>list]<\/span>(<\/span>parameters)<\/span> mutable<\/span> -><\/span> return<\/span>–<\/span>type {<\/p>\n

<\/span> body }<\/span><\/p>\n

\/\/ \u6700\u7b80\u5f62\u5f0f<\/span>
\n[<\/span>]<\/span>(<\/span>)<\/span> {<\/p>\n

<\/span> }<\/span>;<\/span><\/p>\n

\/\/ \u5b9e\u9645\u4f7f\u7528<\/span>
\nauto<\/span> add =<\/span> [<\/span>]<\/span>(<\/span>int<\/span> a,<\/span> int<\/span> b)<\/span> -><\/span> int<\/span> {<\/p>\n

<\/span>
\n return<\/span> a +<\/span> b;<\/span>
\n}<\/span>;<\/span><\/p>\n

std::<\/span>cout <<<\/span> add<\/span>(<\/span>3<\/span>,<\/span> 4<\/span>)<\/span>;<\/span> \/\/ \u8f93\u51fa: 7<\/span><\/p>\n

1.2 \u5404\u90e8\u5206\u8be6\u89e3<\/h4>\n

\/\/ 1. \u6355\u83b7\u5217\u8868 [capture-list]<\/span>
\n\/\/ 2. \u53c2\u6570\u5217\u8868 (parameters) – \u53ef\u9009<\/span>
\n\/\/ 3. mutable – \u53ef\u9009\uff0c\u5141\u8bb8\u4fee\u6539\u6309\u503c\u6355\u83b7\u7684\u53d8\u91cf<\/span>
\n\/\/ 4. \u8fd4\u56de\u7c7b\u578b -> return-type – \u53ef\u9009\uff0c\u53ef\u81ea\u52a8\u63a8\u5bfc<\/span>
\n\/\/ 5. \u51fd\u6570\u4f53 { body }<\/span><\/p>\n

\/\/ \u7701\u7565\u8fd4\u56de\u7c7b\u578b\uff08\u81ea\u52a8\u63a8\u5bfc\uff09<\/span>
\nauto<\/span> add =<\/span> [<\/span>]<\/span>(<\/span>int<\/span> a,<\/span> int<\/span> b)<\/span> {<\/p>\n

<\/span>
\n return<\/span> a +<\/span> b;<\/span> \/\/ \u8fd4\u56de\u7c7b\u578b\u63a8\u5bfc\u4e3aint<\/span>
\n}<\/span>;<\/span><\/p>\n

\/\/ \u7701\u7565\u53c2\u6570\u5217\u8868<\/span>
\nauto<\/span> greet =<\/span> [<\/span>]<\/span> {<\/p>\n

<\/span>
\n std::<\/span>cout <<<\/span> \\”Hello!\\”<\/span>;<\/span>
\n}<\/span>;<\/span><\/p>\n

\u4e8c\u3001\u6355\u83b7\u5217\u8868\u8be6\u89e3<\/h3>\n

2.1 \u6355\u83b7\u65b9\u5f0f<\/h4>\n

int<\/span> x =<\/span> 10<\/span>;<\/span>
\nint<\/span> y =<\/span> 20<\/span>;<\/span><\/p>\n

\/\/ 1. \u7a7a\u6355\u83b7\uff1a\u4e0d\u6355\u83b7\u4efb\u4f55<\/span>
\nauto<\/span> f1 =<\/span> [<\/span>]<\/span> {<\/p>\n

<\/span> return<\/span> 42<\/span>;<\/span> }<\/span>;<\/span><\/p>\n

\/\/ 2. \u6309\u503c\u6355\u83b7<\/span>
\nauto<\/span> f2 =<\/span> [<\/span>x]<\/span> {<\/p>\n

<\/span> return<\/span> x;<\/span> }<\/span>;<\/span> \/\/ \u6355\u83b7x\u7684\u526f\u672c<\/span><\/p>\n

\/\/ 3. \u6309\u5f15\u7528\u6355\u83b7<\/span>
\nauto<\/span> f3 =<\/span> [<\/span>&<\/span>x]<\/span> {<\/p>\n

<\/span> x++<\/span>;<\/span> return<\/span> x;<\/span> }<\/span>;<\/span> \/\/ \u6355\u83b7x\u7684\u5f15\u7528<\/span><\/p>\n

\/\/ 4. \u9690\u5f0f\u6309\u503c\u6355\u83b7<\/span>
\nauto<\/span> f4 =<\/span> [<\/span>=<\/span>]<\/span> {<\/p>\n

<\/span> return<\/span> x +<\/span> y;<\/span> }<\/span>;<\/span> \/\/ \u6355\u83b7\u6240\u6709\u4f7f\u7528\u7684\u53d8\u91cf<\/span><\/p>\n

\/\/ 5. \u9690\u5f0f\u6309\u5f15\u7528\u6355\u83b7<\/span>
\nauto<\/span> f5 =<\/span> [<\/span>&<\/span>]<\/span> {<\/p>\n

<\/span> x++<\/span>;<\/span> y++<\/span>;<\/span> }<\/span>;<\/span> \/\/ \u6355\u83b7\u6240\u6709\u4f7f\u7528\u7684\u53d8\u91cf<\/span><\/p>\n

\/\/ 6. \u6df7\u5408\u6355\u83b7<\/span>
\nauto<\/span> f6 =<\/span> [<\/span>=<\/span>,<\/span> &<\/span>x]<\/span> {<\/p>\n

<\/span> x++<\/span>;<\/span> return<\/span> y;<\/span> }<\/span>;<\/span> \/\/ \u9ed8\u8ba4\u503c\u6355\u83b7\uff0cx\u5f15\u7528\u6355\u83b7<\/span>
\nauto<\/span> f7 =<\/span> [<\/span>&<\/span>,<\/span> x]<\/span> {<\/p>\n

<\/span> x++<\/span>;<\/span> y++<\/span>;<\/span> }<\/span>;<\/span> \/\/ \u9ed8\u8ba4\u5f15\u7528\u6355\u83b7\uff0cx\u503c\u6355\u83b7<\/span><\/p>\n

2.2 \u6355\u83b7this\u6307\u9488<\/h4>\n

class<\/span> Widget<\/span> {<\/p>\n

<\/span>
\n int<\/span> value_ =<\/span> 42<\/span>;<\/span>
\npublic<\/span>:<\/span>
\n void<\/span> doSomething<\/span>(<\/span>)<\/span> {<\/p>\n

<\/span>
\n \/\/ \u6355\u83b7this\u6307\u9488<\/span>
\n auto<\/span> f1 =<\/span> [<\/span>this<\/span>]<\/span> {<\/p>\n

<\/span> return<\/span> value_;<\/span> }<\/span>;<\/span>
\n auto<\/span> f2 =<\/span> [<\/span>*<\/span>this<\/span>]<\/span> {<\/p>\n

<\/span> return<\/span> value_;<\/span> }<\/span>;<\/span> \/\/ C++17\uff1a\u6355\u83b7this\u7684\u526f\u672c<\/span><\/p>\n

\/\/ \u5728\u6210\u5458\u51fd\u6570\u4e2d\u4f7f\u7528Lambda<\/span>
\n std::<\/span>vector<<\/span>int<\/span>><\/span> vec =<\/span> {<\/p>\n

<\/span>1<\/span>,<\/span> 2<\/span>,<\/span> 3<\/span>}<\/span>;<\/span>
\n std::<\/span>for_each<\/span>(<\/span>vec.<\/span>begin<\/span>(<\/span>)<\/span>,<\/span> vec.<\/span>end<\/span>(<\/span>)<\/span>,<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

C++ Lambda\u8868\u8fbe\u5f0f\u6df1\u5165\u5168\u89e3\u6790\uff0c\u9762\u8bd5\u5fc5\u8003\uff01 Lambda\u662fC++11\u5f15\u5165\u7684\u533f\u540d\u51fd\u6570\u7279\u6027\uff0c\u73b0\u4ee3C++\u7f16\u7a0b\u5fc5\u5907\u6280\u80fd\u3002\u672c\u6587\u4ece\u57fa\u7840\u5230\u9ad8\u7ea7\uff0c\u5e2e\u4f60\u5f7b\u5e95\u638c\u63e1Lambda\u3002 \u4e00\u3001Lambda\u57fa\u7840\u8bed\u6cd5
\n1.1 \u57fa\u672c\u5f62\u5f0f
\n\/\/ \u5b8c\u6574\u8bed\u6cd5
\n[capture-list](parameters) mutable -> return-type {body }\/\/ \u6700\u7b80\u5f62\u5f0f
\n[]() {};\/\/ \u5b9e\u9645\u4f7f\u7528
\nauto add = [](int a, int b) -> int {return a <\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[55,5364,190,176],"topic":[],"class_list":["post-106616","post","type-post","status-publish","format-standard","hentry","category-server","tag-c","tag-lambda","tag-190","tag-176"],"yoast_head":"\nC++ Lambda\u8868\u8fbe\u5f0f\u6df1\u5165\u5168\u89e3\u6790\uff0c\u9762\u8bd5\u5fc5\u8003\uff01 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/106616.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C++ Lambda\u8868\u8fbe\u5f0f\u6df1\u5165\u5168\u89e3\u6790\uff0c\u9762\u8bd5\u5fc5\u8003\uff01 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"C++ Lambda\u8868\u8fbe\u5f0f\u6df1\u5165\u5168\u89e3\u6790\uff0c\u9762\u8bd5\u5fc5\u8003\uff01 Lambda\u662fC++11\u5f15\u5165\u7684\u533f\u540d\u51fd\u6570\u7279\u6027\uff0c\u73b0\u4ee3C++\u7f16\u7a0b\u5fc5\u5907\u6280\u80fd\u3002\u672c\u6587\u4ece\u57fa\u7840\u5230\u9ad8\u7ea7\uff0c\u5e2e\u4f60\u5f7b\u5e95\u638c\u63e1Lambda\u3002 \u4e00\u3001Lambda\u57fa\u7840\u8bed\u6cd5 1.1 \u57fa\u672c\u5f62\u5f0f \/\/ \u5b8c\u6574\u8bed\u6cd5 [capture-list](parameters) mutable -> return-type {body }\/\/ \u6700\u7b80\u5f62\u5f0f []() {};\/\/ \u5b9e\u9645\u4f7f\u7528 auto add = [](int a, int b) -> int {return a\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/106616.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-09-17T11:56:35+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/106616.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/106616.html\",\"name\":\"C++ Lambda\u8868\u8fbe\u5f0f\u6df1\u5165\u5168\u89e3\u6790\uff0c\u9762\u8bd5\u5fc5\u8003\uff01 - 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