{"id":107299,"date":"2026-09-19T10:08:45","date_gmt":"2026-09-19T02:08:45","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/107299.html"},"modified":"2026-09-19T10:08:45","modified_gmt":"2026-09-19T02:08:45","slug":"%e5%9b%b0%e6%83%91%e6%98%af%e6%ad%a3%e5%b8%b8%e7%9a%84static-%e7%94%9f%e5%91%bd%e5%91%a8%e6%9c%9f%e7%ba%a6%e6%9d%9f%e6%9c%ac%e6%9d%a5%e5%b0%b1%e4%b8%8d%e7%ae%80%e5%8d%95","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/107299.html","title":{"rendered":"\u56f0\u60d1\u662f\u6b63\u5e38\u7684,\u2018static \u751f\u547d\u5468\u671f\u7ea6\u675f\u672c\u6765\u5c31\u4e0d\u7b80\u5355"},"content":{"rendered":"

\"\" 'static \u751f\u547d\u5468\u671f\u7ea6\u675f\u603b\u7ed9\u4eba\u4e00\u79cd\u4e0d\u597d\u62ff\u634f\u7684\u611f\u89c9，\u56e0\u4e3a\u5b83\u51fa\u73b0\u5728\u4e0d\u540c\u4f4d\u7f6e\u4e0a\u65f6\u542b\u4e49\u4e5f\u4f1a\u6709\u6240\u4e0d\u540c，\u9700\u8981\u4ed4\u7ec6\u7504\u522b\u3002\u6b64\u5916，\u5b83\u8fd8\u603b\u4f1a\u548c\u5176\u4ed6\u4e00\u4e9b\u673a\u5236\u5173\u8054\u7740\u4e00\u8d77\u51fa\u73b0，\u6bd4\u5982\u95ed\u5305\u3001Fn trait\u3001\u751f\u547d\u5468\u671f\u7ea6\u675f\u4ee5\u53ca\u591a\u7ebf\u7a0b\u573a\u666f，\u8fd9\u4f1a\u589e\u52a0\u7406\u89e3\u7684\u56f0\u96be\u5ea6，\u6240\u4ee5，\u5bf9 'static \u611f\u5230\u56f0\u60d1\u662f\u6b63\u5e38\u7684\u3002\u672c\u6587\u4f1a\u5e26\u9886\u5927\u5bb6\u5168\u9762\u4e86\u89e3\u4e00\u4e0b 'static \u751f\u547d\u5468\u671f\u7ea6\u675f\u3002\u672c\u6587\u539f\u6587\u94fe\u63a5：https:\/\/laurence.blog.csdn.net\/article\/details\/165619915 \u7981\u6b62\u8f6c\u8f7d\u3002<\/p>\n

1. \u4ece static \u53d8\u91cf\u8c08\u8d77<\/h2>\n

static<\/span> X<\/span>:<\/span> i32<\/span> =<\/span> 42<\/span>;<\/span>
\nconst<\/span> Y<\/span>:<\/span> i32<\/span> =<\/span> 42<\/span>;<\/span><\/p>\n

\u8ddf\u5176\u4ed6\u8bed\u8a00\u4e00\u6837，static \u53d8\u91cf\u7684\u6839\u672c\u7279\u5f81\u662f：\u5b83\u7684\u6570\u636e\u4f1a\u88ab\u5199\u8fdb\u7a0b\u5e8f\u7684\u6570\u636e\u6bb5（.rodata \/ .data \/ .bss），\u8fdb\u7a0b\u542f\u52a8\u65f6\u4f1a\u88c5\u8f7d\u5230\u5185\u5b58\u4e2d，\u7136\u540e\u4e00\u76f4\u6301\u7eed\u5230\u7a0b\u5e8f\u7ed3\u675f，\u5185\u5b58\u4f4d\u7f6e\u90fd\u4e0d\u4f1a\u53d1\u751f\u53d8\u52a8\u3002<\/p>\n

\u6240\u4ee5，\u901a\u5e38\u6765\u8bf4，static \u53d8\u91cf\u662f\u5168\u5c40\u6027\u7684，\u4f46\u8fd9\u4e0d\u662f\u7edd\u5bf9\u7684\u3002\u5e94\u8be5\u8fd9\u6837\u8bf4：static \u53d8\u91cf\u5177\u5907\u6210\u4e3a\u5168\u5c40\u53d8\u91cf\u7684\u6761\u4ef6，\u4f46\u662f\u5426\u662f\u5168\u5c40\u7684\u53d6\u51b3\u4e8e\u58f0\u660e\u5b83\u7684\u4f4d\u7f6e，\u56e0\u4e3a，\u9664\u4e86\u53ef\u4ee5\u5728 module \u7ea7\u522b\u58f0\u660e\u5916，\u6211\u4eec\u4e5f\u53ef\u4ee5\u5728\u4e00\u4e2a\u51fd\u6570\u7684\u5c40\u90e8\u4f5c\u7528\u57df\u4e2d\u58f0\u660e\u4e00\u4e2a static \u53d8\u91cf，\u5b83\u540c\u6837\u662f\u653e\u5728\u6570\u636e\u6bb5，\u8fd0\u884c\u65f6\u52a0\u8f7d\u8fdb\u5185\u5b58\u7684，\u53ea\u4e0d\u8fc7，\u5b83\u58f0\u660e\u7684\u4f5c\u7528\u57df\u9650\u5236\u4e86\u5b83\u7684\u201c\u53ef\u89c1\u6027\u201d\u3002<\/p>\n

\u7ecf\u5e38\u4e0e static \u53d8\u91cf\u4e00\u8d77\u6bd4\u8f83\u7684\u662f const \u5e38\u91cf，static \u53d8\u91cf\u6709\u81ea\u5df1\u786e\u5207\u7684\u5185\u5b58\u5730\u5740，\u53ef\u4ee5\u5bf9\u5b83：\u53d6\u5f15\u7528\u3001\u53d6\u5730\u5740，\u800c const \u5e38\u91cf\u66f4\u50cf\u662f\u5b83\u4ee3\u8868\u7684\u90a3\u4e2a\u503c\u7684\u201c\u522b\u540d\u201d，\u5b83\u6ca1\u6709\u81ea\u5df1\u7684\u5185\u5b58\u5730\u5740，\u5728\u7f16\u8bd1\u65f6，\u9047\u5230\u4f7f\u7528\u5230\u5b83\u7684\u5730\u65b9，\u7f16\u8bd1\u5668\u4f1a\u5c31\u5730\u7269\u5316\u4e00\u4efd\u8fd9\u4e2a\u503c\u3002<\/p>\n

2. 'static \u751f\u547d\u5468\u671f\u7ea6\u675f<\/h2>\n

'static \u8868\u793a\u5176\u6807\u8bb0\u5bf9\u8c61\u7684\u751f\u547d\u5468\u671f\u662f\u7a0b\u5e8f\u7684\u6574\u4e2a\u8fd0\u884c\u671f，\u4e5f\u5c31\u662f\u8bf4\u8fd9\u4e2a\u5bf9\u8c61\u5728\u7a0b\u5e8f\u8fd0\u884c\u671f\u95f4\u4f1a\u4e00\u76f4\u5b58\u6d3b，\u7ed3\u5408\u5b83\u6240\u5904\u7684\u201c\u4e0a\u4e0b\u6587\u201d（\u6240\u5904\u7684\u4f4d\u7f6e），'static \u53ef\u4ee5\u51fa\u73b0\u5728\u56db\u79cd\u4f4d\u7f6e\u4e0a，\u4ee5\u53ca\u4e00\u79cd\u5bb9\u6613\u88ab\u8ba4\u4e3a\u662f\u53ef\u80fd\u7684\u4f4d\u7f6e，\u4f46\u5b9e\u9645\u4e0a\u662f\u4e0d\u5141\u8bb8\u7684，\u4ee5\u4e0b\u662f\u5177\u4f53\u63cf\u8ff0\u548c\u793a\u4f8b：<\/p>\n\n\u51fa\u73b0\u7684\u4f4d\u7f6e\u4f5c\u7528\u793a\u4f8b\u662f\u5426\u5408\u6cd5<\/tr>\n\n\n\n\n\n\n
\u4fee\u9970\u5f15\u7528<\/td>\n\u58f0\u660e\u5f15\u7528\u53ef\u4ee5\u6d3b\u5230\u7a0b\u5e8f\u7ed3\u675f<\/td>\nlet s: &'static str = \u201chello\u201d<\/td>\n\u2611<\/td>\n<\/tr>\n
\u4f5c\u4e3a\u7c7b\u578b\u7ea6\u675f<\/td>\n\u7ea6\u675f\u7c7b\u578b\u4e0d\u5f97\u542b\u6709\u5916\u90e8\u5f15\u7528<\/td>\nT: 'static<\/td>\n\u2611<\/td>\n<\/tr>\n
supertrait \u7684\u4f4d\u7f6e\u4e0a（\u4f9d\u7136\u662f\u7c7b\u578b\u7ea6\u675f）<\/td>\n\u7ea6\u675f\u5b9e\u73b0\u8005\u4e0d\u5f97\u542b\u6709\u5916\u90e8\u5f15\u7528<\/td>\ntrait Foo: 'static {\u2026}<\/td>\n\u2611<\/td>\n<\/tr>\n
\u7ed3\u6784\u4f53\u7c7b\u578b\u7684\u5c16\u62ec\u53f7\u4e2d<\/td>\n\u4f5c\u4e3a\u4e00\u4e2a\u5177\u4f53\u7684\u751f\u547d\u5468\u671f\u7c7b\u578b<\/td>\nb: Bar<'static><\/td>\n\u2611<\/td>\n<\/tr>\n
\u7ed3\u6784\u4f53\u5b9a\u4e49\u7684\u5c16\u62ec\u53f7\u4e2d<\/td>\n\u4e0d\u5408\u6cd5<\/td>\nstruct Bar<'static> {\u2026} \/\/ error!<\/td>\n\u2612<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

2.1 \u4fee\u9970\u5f15\u7528<\/h3>\n

\u4f7f\u7528 'static \u4fee\u9970\u4e00\u4e2a\u5f15\u7528\u65f6\u610f\u601d\u662f\u201c\u8fd9\u4e2a\u5f15\u7528\u80fd\u4e00\u76f4\u6d3b\u5230\u7a0b\u5e8f\u7ed3\u675f，\u4e5f\u5c31\u662f\u201c\u4f60\u60f3\u6301\u6709\u591a\u4e45\u90fd\u884c\u201d\u3002\u663e\u7136，\u4e0d\u662f\u968f\u4fbf\u4ec0\u4e48\u5f15\u7528\u52a0\u4e0a\u4e2a 'static \u4fee\u9970\u5c31\u80fd\u6d3b\u5230\u7a0b\u5e8f\u7ed3\u675f，\u5f15\u7528\u7684\u201c\u5e95\u6c14\u201d\u6765\u81ea\u4e8e\u5b83\u7684\u503c，\u662f\u56e0\u4e3a\u5f15\u7528\u7684\u503c\u80fd\u201c\u8d2f\u7a7f\u7a0b\u5e8f\u7684\u6574\u4e2a\u751f\u547d\u5468\u671f\u201d，\u6240\u4ee5\u5f15\u7528\u624d\u6709\u673a\u4f1a\u51a0\u4ee5 'static \u4fee\u9970，\u90a3\u90fd\u6709\u54ea\u4e9b\u503c\u5177\u5907\u8fd9\u79cd\u80fd\u529b\u5462？<\/p>\n

1. static \u53d8\u91cf\u7684\u5f15\u7528<\/p>\n

\u8fd9\u662f\u6700\u5e38\u89c1\u7684 'static \u5f15\u7528\u7684\u6765\u6e90：<\/p>\n

static<\/span> X<\/span>:<\/span> i32<\/span> =<\/span> 42<\/span>;<\/span>
\nlet<\/span> a:<\/span> &<\/span>'static<\/span> i32<\/span> =<\/span> &<\/span>X<\/span>;<\/span><\/p>\n

2. \u5b57\u9762\u91cf\u7684\u5f15\u7528<\/p>\n

let<\/span> b:<\/span> &<\/span>'static<\/span> str<\/span> =<\/span> "hello"<\/span>;<\/span>
\nconst<\/span> N<\/span>:<\/span> i32<\/span> =<\/span> 7<\/span>;<\/span>
\nlet<\/span> c:<\/span> &<\/span>'static<\/span> i32<\/span> =<\/span> &<\/span>N<\/span>;<\/span><\/p>\n

3. Box::leak \u6cc4\u6f0f\u7684\u503c<\/p>\n

let<\/span> d:<\/span> &<\/span>'static<\/span> String<\/span> =<\/span> Box<\/span>::<\/span>leak<\/span>(<\/span>Box<\/span>::<\/span>new<\/span>(<\/span>String<\/span>::<\/span>from<\/span>(<\/span>"hello"<\/span>)<\/span>)<\/span>)<\/span>;<\/span><\/p>\n

Box::leak() \u51fd\u6570\u4f1a\u6d88\u8017\u6389 Box \u5b9e\u4f8b，\u7136\u540e\u628a\u5b83\u5b58\u653e\u5728\u5806\u4e0a\u7684\u6570\u636e\u6cc4\u6f0f\u51fa\u6765，\u8fd9\u65f6\u5019\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e2a 'static \u5f15\u7528\u6765\u63a5\u4f4f\u8fd9\u4e2a\u6cc4\u6f0f\u51fa\u6765\u7684\u6570\u636e，\u5c31\u50cf\u4e0a\u9762\u793a\u4f8b\u4ee3\u7801\u505a\u7684\u90a3\u6837\u3002\u8fd9\u79cd\u5904\u7406\u65b9\u6cd5\u4e3b\u8981\u7528\u4e8e\u5728\u7a0b\u5e8f\u7684\u5269\u4f59\u751f\u547d\u671f\u5185\u4fdd\u7559\u6570\u636e\u3002<\/p>\n

\u793a\u4f8b\u4e2d\u7684 d \u53cd\u800c\u662f\u5bf9 'static \u5f15\u7528\u7684\u4e00\u79cd\u66f4\u6df1\u523b\u7684\u8868\u8fbe，\u4f5c\u4e3a\u4e00\u4e2a 'static \u5f15\u7528，\u5b83\u6307\u5411\u7684\u503c\u4e0d\u5728\u6570\u636e\u6bb5，\u6ca1\u6709\u4efb\u4f55 static \u58f0\u660e，\u4f46\u5b83\u4f9d\u7136\u6210\u7acb！\u5b83\u6240\u6307\u5411\u7684\u6570\u636e（\u5185\u5b58\u4e2d\u7684\u4f4d\u7f6e）\u4f1a\u5728\u7a0b\u5e8f\u7ed3\u675f\u524d\u4e00\u76f4\u6709\u6548\u3002<\/p>\n

2.2 \u4f5c\u4e3a\u7c7b\u578b\u7ea6\u675f<\/h3>\n

2.2.1 'static \u4f5c\u4e3a\u7c7b\u578b\u7ea6\u675f\u7684\u542b\u4e49<\/h4>\n

\u5f53 'static \u4f5c\u4e3a\u7c7b\u578b\u7ea6\u675f\u65f6，\u5b83\u8868\u8fbe\u7684\u542b\u4e49\u662f：\u8fd9\u4e2a\u7c7b\u578b\u5185\u90e8\u4e0d\u5f97\u542b\u6709\u4efb\u4f55\u5916\u90e8\u5f15\u7528（'static \u5f15\u7528\u9664\u5916），\u8bf4\u5f97\u518d\u5177\u4f53\u4e00\u4e9b\u7684\u8bdd\u5c31\u662f：\u7ed3\u6784\u4f53\u4e0d\u5f97\u542b\u6709\u4efb\u4f55\u5f15\u7528\u7c7b\u578b\u7684\u5b57\u6bb5（'static \u5f15\u7528\u9664\u5916），\u679a\u4e3e\u3001\u5143\u7ec4\u7b49\u540c\u7406\u3002\u8fd9\u91cc\u987a\u5e26\u89e3\u91ca\u4e00\u4e2a\u5076\u5c14\u4f1a\u6709\u4eba\u4f7f\u7528\u7684\u6982\u5ff5：\u77ed\u671f\u501f\u7528\u3001\u77ed\u751f\u547d\u5468\u671f\u5f15\u7528，\u5b83\u4eec\u7684\u610f\u601d\u5c31\u662f：\u9664 'static \u5f15\u7528\u4e4b\u5916\u7684\u6240\u6709\u5f15\u7528，\u56e0\u4e3a\u6bcf\u6b21\u90fd\u8bf4：\u4e0d\u5f97\u542b\u6709\u4efb\u4f55\u5f15\u7528\u7c7b\u578b（'static \u5f15\u7528\u9664\u5916）\u4f1a\u6bd4\u8f83\u9ebb\u70e6，\u6240\u4ee5\u6709\u4eba\u628a\u6392\u9664\u6389 'static \u5f15\u7528\u540e\u7684\u5f15\u7528\u7c7b\u578b\u53eb：\u77ed\u671f\u501f\u7528\u6216\u77ed\u751f\u547d\u5468\u671f\u5f15\u7528，\u6240\u4ee5\u521a\u624d\u7684\u8868\u8ff0\u4e5f\u53ef\u8bf4\u6210\u662f：\u7ed3\u6784\u4f53\u4e0d\u5f97\u542b\u6709\u4efb\u4f55\u77ed\u751f\u547d\u5468\u671f\u5f15\u7528，\u8fd9\u4e2a\u201c\u77ed\u201d\u4e5f\u4e0d\u89c1\u5f97\u771f\u6709\u591a\u77ed，\u53ea\u662f\u76f8\u5bf9\u4e8e 'static \u800c\u8a00\u7684\u3002<\/p>\n

\u8fd9\u91cc\u6211\u4eec\u9700\u8981\u5f3a\u5316\u4e24\u4e2a\u77e5\u8bc6\u70b9：\u9996\u5148\u662f\u201c\u7c7b\u578b\u7ea6\u675f\u201d：\u7c7b\u578b\u7ea6\u675f1<\/sup>\u4e3b\u8981\u5305\u62ec：trait bound（\u7279\u8d28\u7ea6\u675f）\u3001lifetime bound（\u751f\u547d\u5468\u671f\u7ea6\u675f）\u4e24\u79cd，\u5b83\u4eec\u90fd\u662f\u7528\u6765\u4fee\u9970\u6cdb\u578b\u7684\u201c\u7c7b\u578b\u53c2\u6570\u201d\u7684，\u8bb0\u4f4f：\u6ca1\u6709\u6cdb\u578b\u5c31\u6ca1\u6709\u6240\u8c13\u7684\u201c\u7ea6\u675f\u201d；\u7136\u540e\u662f\u201c\u7c7b\u578b\u201d\u6709\u54ea\u4e9b？\u4e5f\u5c31\u662f\u201c\u7c7b\u578b\u7ea6\u675f\u201d\u90fd\u662f\u4f5c\u7528\u5728\u4ec0\u4e48\u4e0a\u9762？\u6700\u5e38\u89c1\u7684\u5f53\u7136\u662f\u7ed3\u6784\u4f53！\u5bf9\u4e8e\u7ed3\u6784\u4f53\u6765\u8bf4，\u5982\u679c\u5b83\u6709 'static \u7ea6\u675f，\u5c31\u662f\u6307\u4e0d\u5141\u8bb8\u5b83\u542b\u6709\u4efb\u4f55\u5f15\u7528\u7c7b\u578b\u7684\u5b57\u6bb5（'static \u5f15\u7528\u9664\u5916），\u5982\u679c\u662f\u679a\u4e3e\u548c\u5143\u7ec4，\u540c\u6837\u662f\u770b\u5b83\u7684\u7ec4\u6210\u5143\u7d20\u91cc\u6709\u6ca1\u6709\u4efb\u4f55\u5f15\u7528\u7c7b\u578b（'static \u5f15\u7528\u9664\u5916），\u6ce8\u610f：'static \u7ea6\u675f\u7684\u68c0\u67e5\u673a\u5236\u662f\u9012\u5f52\u68c0\u67e5\u7c7b\u578b\u4e2d\u7684\u6240\u6709\u5b57\u6bb5，\u5305\u62ec\u5b57\u6bb5\u4e2d\u7684\u5b57\u6bb5，\u53ea\u8981\u53d1\u73b0\u4e00\u4e2a\u5f15\u7528\u7c7b\u578b（'static \u5f15\u7528\u9664\u5916），\u5c31\u4e0d\u6ee1\u8db3，\u4e00\u4e2a\u90fd\u6ca1\u6709\u624d\u6ee1\u8db3\u3002\u53e6\u5916，\u8bb0\u4f4f：trait \u4ece\u6765\u4e0d\u662f\u4e00\u79cd\u7c7b\u578b，\u7c7b\u578b\u7ea6\u675f\u4ece\u6765\u4e0d\u662f\u4f5c\u7528\u5230\u4e00\u4e2a trait \u4e0a，\u800c\u662f\u4f5c\u7528\u5230\u5b83\u7684\u5b9e\u73b0\u8005\u4e0a，\u5373\u4f7f\u89c1\u5230 trait Foo: 'static {…} \u8fd9\u6837\u5199\u6cd5，\u4e5f\u4e0d\u8981\u9519\u8bef\u7684\u8ba4\u4e3a 'static \u53ef\u4ee5\u7ea6\u675f trait，\u5b83\u5b9e\u9645\u4e0a\u7ea6\u675f\u7684\u8fd8\u662f Foo \u7684\u5b9e\u73b0\u8005，\u662f\u8981\u6c42\u5b83\u7684\u5b9e\u73b0\u8005\u5185\u90e8\u4e0d\u5f97\u542b\u6709\u4efb\u4f55\u5f15\u7528\u7c7b\u578b\u7684\u5b57\u6bb5\u3002\u4e0b\u9762，\u6211\u4eec\u770b\u4e00\u4e2a\u793a\u4f8b，\u65e2\u7136\u662f\u8981\u5c55\u793a\u7c7b\u578b\u7ea6\u675f，\u90a3\u5fc5\u5b9a\u8981\u6709\u6cdb\u578b，\u6240\u4ee5，\u8fd8\u662f\u8981\u5f15\u5165\u4e00\u4e2a\u6cdb\u578b\u51fd\u6570\u4f5c\u4e3a driver:<\/p>\n

struct<\/span> Owned<\/span> {<\/span>
\n name:<\/span> String<\/span>,<\/span>
\n}<\/span><\/p>\n

\/\/ \u5b9a\u4e49\u7ed3\u6784\u4f53\u65f6\u53ea\u8981\u51fa\u73b0\u5f15\u7528，\u5982\u679c\u4e0d\u662f 'static \u5f15\u7528，\u5fc5\u987b\u8981\u5f15\u5165\u751f\u547d\u5468\u671f\u6807\u6ce8！ <\/span>
\nstruct<\/span> Borrowed<\/span><<\/span>'a<\/span>><\/span> {<\/span>
\n name:<\/span> &<\/span>'a<\/span> str<\/span>,<\/span>
\n}<\/span><\/p>\n

fn<\/span> check<\/span><<\/span>T<\/span>:<\/span> 'static<\/span>><\/span>(<\/span>_:<\/span> T<\/span>)<\/span> {<\/span>}<\/span><\/p>\n

fn<\/span> main<\/span>(<\/span>)<\/span> {<\/span>
\n let<\/span> s =<\/span> String<\/span>::<\/span>from<\/span>(<\/span>"hi"<\/span>)<\/span>;<\/span>
\n \/\/ Owned \u4e0d\u542b\u5f15\u7528，\u6ee1\u8db3：T: 'static \u7ea6\u675f<\/span>
\n check<\/span>(<\/span>Owned<\/span> {<\/span> name:<\/span> s.<\/span>clone<\/span>(<\/span>)<\/span> }<\/span>)<\/span>;<\/span> \/\/ \u2611 <\/span>
\n \/\/ Borrowed \u542b\u6709\u5f15\u7528，\u4e0d\u6ee1\u8db3：T: 'static \u7ea6\u675f<\/span>
\n check<\/span>(<\/span>Borrowed<\/span> {<\/span> name:<\/span> &<\/span>s }<\/span>)<\/span>;<\/span> \/\/ \u2612 <\/span>
\n}<\/span><\/p>\n

\u6709\u4e9b\u4eba\u4f1a\u5bf9 'static \u4f5c\u4e3a\u7c7b\u578b\u7ea6\u675f\u65f6\u7684\u542b\u4e49\u611f\u5230\u56f0\u60d1，\u89c9\u5f97\u6ca1\u6cd5\u628a\u5b83\u672c\u6765\u7684\u8bed\u4e49\u548c\u5bf9\u7c7b\u578b\u7684\u7ea6\u675f\u6548\u679c\u8054\u7cfb\u8d77\u6765，\u6240\u4ee5\u76f4\u63a5\u201c\u6b7b\u8bb0\u786c\u80cc\u201d\u4e86\u5b83\u4f5c\u4e3a\u7c7b\u578b\u7ea6\u675f\u65f6\u7684\u542b\u4e49：\u4e0d\u80fd\u542b\u6709\u5916\u90e8\u5f15\u7528\u3002\u5b9e\u9645\u4e0a， 'static \u4f5c\u4e3a\u7c7b\u578b\u7ea6\u675f\u65f6\u8868\u8fbe\u51fa\u7684\u8bed\u4e49\u8fd8\u662f\u5f88\u81ea\u7136\u7684： 'static \u4fee\u9970\u7684\u662f\u4e00\u4e2a\u7c7b\u578b，\u5957\u7528\u5b83\u7684\u539f\u59cb\u8bed\u4e49\u7684\u8bdd，\u610f\u601d\u662f\u8bf4：\u8fd9\u4e2a\u7c7b\u578b\u53ef\u4ee5\u4e00\u76f4\u6d3b\u5230\u7a0b\u5e8f\u8fd0\u884c\u7ed3\u675f，\u7c7b\u578b\u53c8\u4e0d\u662f\u4e00\u4e2a\u5177\u4f53\u503c，\u672c\u6765\u4e0d\u5c31\u662f\u4e00\u76f4\u5b58\u5728\u5417？\u8fd9\u4e2a\u60f3\u6cd5\u5c31\u88ab\u201c\u60ef\u6027\u601d\u7ef4\u201d\u5e26\u8dd1\u4e86，\u522b\u5fd8\u4e86：\u7c7b\u578b\u91cc\u53ef\u4ee5\u5305\u542b\u5f15\u7528\u5b57\u6bb5，\u6709\u4e86\u5f15\u7528，\u7c7b\u578b\u7684\u751f\u547d\u5468\u671f\u5c31\u4f1a\u5bf9\u5916\u90e8\u7684\u503c\u4ea7\u751f\u7684\u4f9d\u8d56，\u8fd9\u65f6\u5019，\u7c7b\u578b\u5c31\u5fc5\u987b\u6dfb\u52a0\u751f\u547d\u5468\u671f\u6807\u6ce8\u4e86，\u9664\u975e\u4f9d\u8d56\u7684\u662f 'static \u5f15\u7528，\u4e5f\u5c31\u662f\u8bf4：\u4ece\u751f\u547d\u5468\u671f\u8fd9\u4e2a\u7ef4\u5ea6\u89c2\u5bdf，\u7c7b\u578b\u53ef\u4ee5\u5206\u6210\u4e24\u79cd：\u4e00\u79cd\u662f\u751f\u547d\u5468\u671f\u4f9d\u8d56\u4e0d\u53d7\u5916\u754c\u5f71\u54cd\u7684，\u53e6\u4e00\u79cd\u662f\u751f\u547d\u5468\u671f\u4f1a\u4f9d\u8d56\u5916\u90e8\u503c\u7684\u751f\u547d\u5468\u671f\u7684，\u5177\u4f53\u5230\u4ee3\u7801\u4e0a\u7684\u8868\u73b0\u5c31\u662f：\u524d\u8005\u53ea\u542b\u6709\u503c\u6216 'static \u5f15\u7528；\u540e\u8005\u5219\u5728\u5b9a\u4e49\u4e2d\u5f15\u5165\u4e86\u5916\u90e8\u5f15\u7528（\u5982\u679c\u51fa\u73b0\u5c31\u5fc5\u987b\u8fdb\u884c\u751f\u547d\u5468\u671f\u6807\u6ce8），\u53ea\u662f Rust \u6ca1\u6709\u7ed9\u8fd9\u4e24\u79cd\u7c7b\u578b\u8d77\u8fc7\u6b63\u5f0f\u7684\u79f0\u8c13\u3002\u4f46\u662f，'static \u7ea6\u675f\u521a\u597d\u80fd\u7cbe\u51c6\u5730\u5c06\u8fd9\u4e24\u79cd\u7c7b\u578b\u533a\u5206\u5f00\u4e86，\u6ee1\u8db3 'static \u7ea6\u675f\u7684\u5c31\u662f\u7b2c\u4e00\u79cd\u7c7b\u578b，\u4e0d\u6ee1\u8db3\u7684\u5c31\u662f\u7b2c\u4e8c\u79cd\u7c7b\u578b，\u6240\u4ee5，\u6211\u4eec\u5728\u65e5\u5e38\u8868\u8ff0\u65f6，\u8bf4：\u201c\u4e00\u4e2a\u7c7b\u578b\u662f 'static \u7684\u201d\u5c31\u662f\u8bf4\u5b83\u4e0d\u5305\u542b\u5f15\u7528\u7c7b\u578b（'static \u5f15\u7528\u9664\u5916）；\u8bf4：\u201c\u4e00\u4e2a\u7c7b\u578b\u4e0d\u662f 'static \u7684\u201d\u5c31\u8868\u793a\u5b83\u5185\u90e8\u4e00\u5b9a\u6709\u77ed\u751f\u547d\u5468\u671f\u5f15\u7528\u3002<\/p>\n

2.2.2 \u6ee1\u8db3 'static \u7ea6\u675f\u7684\u7c7b\u578b\u79cd\u7c7b<\/h4>\n

\u63a5\u4e0b\u6765，\u6211\u4eec\u518d\u770b\u6ee1\u8db3\u7ea6\u675f\u7684\u5b9e\u73b0\u8005\u8fd9\u4e00\u4fa7，\u6211\u4eec\u8bf4：\u4e00\u4e2a\u7c7b\u578b\u662f\u5426\u6ee1\u8db3 'static \u5c31\u662f\u770b\u5b83\u6709\u6ca1\u6709\u5916\u90e8\u5f15\u7528，\u8fd9\u4e2a\u63cf\u8ff0\u867d\u7136\u6b63\u786e，\u4f46\u4e0d\u591f\u7ec6\u81f4，\u4e00\u4e2a\u7c7b\u578b\u662f\u5426\u542b\u6709\u5916\u90e8\u5f15\u7528\u5e76\u4e0d\u662f\u5355\u5355\u770b\u5b83\u7684\u5b57\u6bb5\u6709\u6ca1\u6709\u5f15\u7528\u7c7b\u578b\u8fd9\u4e48\u7b80\u5355（\u5f53\u7136，\u8fd9\u662f\u5176\u4e2d\u4e00\u79cd\u60c5\u5f62），\u6709\u4e24\u65b9\u9762\u7684\u56e0\u7d20\u4f1a\u5f71\u54cd\u6700\u7ec8\u7684\u7ed3\u679c：<\/p>\n

\u2460 \u4e00\u4e2a\u7c7b\u578b，\u6bd4\u5982\u4e00\u4e2a\u7ed3\u6784\u4f53，\u5982\u679c\u5f15\u5165\u4e86\u6cdb\u578b，\u90a3\u5b83\u5c31\u4e0d\u662f\u4e00\u4e2a\u5355\u4e00\u7ed3\u6784\u4f53\u4e86，\u800c\u662f\u4e00\u4e2a\u7ed3\u6784\u4f53\u201c\u6a21\u677f\u201d，\u6b64\u65f6，\u5b83\u662f\u5426\u6ee1\u8db3 'static \u7ea6\u675f\u5c31\u4e0d\u80fd\u5355\u5355\u770b\u5b83\u81ea\u8eab\u6709\u6ca1\u6709\u5f15\u7528\u5b57\u6bb5\u4e86，\u8fd8\u8981\u770b\u5177\u4f53\u7684\u7c7b\u578b\u53c2\u6570，\u5982\u679c\u5728\u5b9e\u4f8b\u5316\u65f6\u4f20\u5165\u4e86\u5f15\u7528\u7c7b\u578b，\u90a3\u8fd9\u4e2a\u5177\u4f53\u7684\u5b9e\u4f8b\u540c\u6837\u4e5f\u662f\u4e0d\u6ee1\u8db3 'static \u7ea6\u675f\u7684（\u53c2\u8003\u4e0b\u9762\u793a\u4f8b\u4e2d\u7684 struct C）；<\/p>\n

\u2461 \u4e00\u4e2a\u7c7b\u578b，\u6bd4\u5982\u4e00\u4e2a\u7ed3\u6784\u4f53，\u786e\u5b9e\u4f9d\u8d56\u5230\u4e86\u5f15\u7528\u5b57\u6bb5，\u6b64\u65f6\u5fc5\u987b\u5728\u7ed3\u6784\u4f53\u58f0\u660e\u4e0a\u6dfb\u52a0\u751f\u547d\u5468\u671f\u6807\u6ce8，\u4f46\u662f，\u5982\u679c\u5728\u5b9e\u4f8b\u5316\u65f6\u4f20\u5165\u7684\u662f 'static \u5f15\u7528，\u53cd\u800c\u53ef\u4ee5\u6ee1\u8db3 'static \u7ea6\u675f（\u53c2\u8003\u4e0b\u9762\u793a\u4f8b\u4e2d\u7684 struct D）\u3002<\/p>\n

\u4ee5\u4e0b\u5217\u4e3e\u4e86\u56db\u79cd\u5178\u578b\u7684\u7c7b\u578b（\u7ed3\u6784\u4f53）\u5b9a\u4e49，\u6709\u7684\u53ef\u4ee5\u76f4\u63a5\u786e\u5b9a\u662f\u5426\u6ee1\u8db3 'static \u7ea6\u675f，\u6709\u7684\u5219\u662f\u56e0\u4e3a\u5f15\u5165\u4e86\u6cdb\u578b\u8981\u518d\u9012\u8fdb\u4e00\u5c42\u5206\u6790\u6cdb\u578b\u7c7b\u578b\u662f\u5426\u6ee1\u8db3 'static \u7ea6\u675f，\u8fd8\u6709\u7684\u662f\u56e0\u4e3a\u5f15\u5165\u4e86\u751f\u547d\u5468\u671f\u53c2\u6570，\u5982\u679c\u4f20\u5165\u662f 'static \u5f15\u7528，\u5c31\u6ee1\u8db3，\u5426\u5219\u5c31\u4e0d\u6ee1\u8db3：<\/p>\n\n\u60c5\u5f62\u5b9a\u4e49\u662f\u5426\u6ee1\u8db3 'static \u7ea6\u675f<\/tr>\n\n\n\n\n\n
1<\/td>\nstruct A { x: i32 }<\/td>\n\u603b\u662f<\/td>\n<\/tr>\n
2<\/td>\nstruct B { s: &'static str }<\/td>\n\u603b\u662f<\/td>\n<\/tr>\n
3<\/td>\nstruct C { x: T }<\/td>\n\u53d6\u51b3\u4e8e T，\u5982\u679c T \u6ee1\u8db3 'static \u7ea6\u675f，\u5219 C \u6ee1\u8db3，\u53cd\u4e4b\u4ea6\u7136<\/td>\n<\/tr>\n
4<\/td>\nstruct D<'a> { s: &'a str }<\/td>\n\u53d6\u51b3\u4e8e\u5177\u4f53\u7684\u751f\u547d\u5468\u671f，\u5982\u679c\u662f 'static，\u5219 D \u6ee1\u8db3，\u5426\u5219\u4e0d\u6ee1\u8db3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

2.2.3 \u7279\u522b\u573a\u666f：\u4f5c\u4e3a\u95ed\u5305\u7684\u7c7b\u578b\u7ea6\u675f<\/h4>\n

\u6211\u89c9\u5f97\u9700\u8981\u7279\u522b\u628a 'static \u4f5c\u4e3a\u95ed\u5305\u7684\u7c7b\u578b\u7ea6\u675f\u5355\u72ec\u62ff\u51fa\u6765\u4ecb\u7ecd\u4e00\u4e0b\u3002\u9996\u5148，\u95ed\u5305\u4e5f\u662f\u6709\u7c7b\u578b\u7684（Fn\u3001FnMut\u3001FnOnce），\u6240\u4ee5，\u7406\u8bba\u4e0a，'static \u4f5c\u4e3a\u95ed\u5305\u7c7b\u578b\u7ea6\u675f\u548c 'static \u4f5c\u4e3a\u666e\u901a\u7c7b\u578b（\u6bd4\u5982\u7ed3\u6784\u4f53）\u7684\u7ea6\u675f\u5e94\u8be5\u662f\u6ca1\u6709\u5206\u522b\u7684，\u4f46\u662f\u95ed\u5305\u6bd5\u7adf\u4e0d\u662f\u7ed3\u6784\u4f53，'static \u80fd\u7ea6\u675f\u5230\u95ed\u5305\u7684\u4ec0\u4e48\u5462？\u8fd9\u662f\u4e00\u4e2a\u5f88\u597d\u7684\u95ee\u9898，\u5982\u679c\u627e\u5230\u5173\u952e\u8054\u7cfb，\u7406\u89e3\u8d77\u6765\u5c31\u4f1a\u975e\u5e38\u8f7b\u677e\u3002<\/p>\n

\u6211\u4eec\u77e5\u9053，\u95ed\u5305\u90fd\u4f1a\u88ab\u7f16\u8bd1\u5668\u81ea\u52a8\u7f16\u8bd1\u6210\u533f\u540d\u7684\u7ed3\u6784\u4f53，\u5b83\u6240\u6355\u83b7\u7684\u5916\u90e8\u503c\u6216\u5f15\u7528\u90fd\u662f\u8fd9\u4e2a\u7ed3\u6784\u4f53\u4e2d\u7684\u5b57\u6bb5\u3002\u8fd9\u5c31\u548c 'static \u4f5c\u4e3a\u7ed3\u6784\u4f53\u7684\u7c7b\u578b\u7ea6\u675f\u80fd\u5bf9\u9f50\u4e86！\u5f53 'static \u4f5c\u4e3a\u95ed\u5305\u7684\u7c7b\u578b\u7ea6\u675f\u65f6（\u4e5f\u5c31\u662f\u51fa\u73b0\u5728 T: Fn()\/FnMut()\/FnOnce() + 'static \u8fd9\u79cd\u4f4d\u7f6e\u4e0a\u65f6），\u5b83\u5b9e\u9645\u4e0a\u7ea6\u675f\u7684\u662f：\u95ed\u5305\u4e0d\u5f97\u6355\u83b7\u5916\u90e8\u7684\u5f15\u7528（'static \u5f15\u7528\u9664\u5916）！\u8fd9\u79cd\u60c5\u5f62\u6709\u4e00\u4e2a\u6700\u5e38\u89c1\u7684\u4f8b\u5b50，\u5c31\u662f thread::spawn() \u9700\u8981\u7684\u95ed\u5305，\u5b83\u7684\u7c7b\u578b\u7ea6\u675f\u5c31\u662f：F: FnOnce() -> T + Send + 'static，\u5982\u679c\u4f60\u4f20\u7ed9 thread::spawn() \u7684\u95ed\u5305\u4f9d\u8d56\u5230\u4e86\u4e00\u4e2a\u5916\u90e8\u7684\u5f15\u7528，\u7f16\u8bd1\u4f1a\u62a5\u9519，\u4e00\u822c\u7684\u89e3\u51b3\u65b9\u6cd5\u5c31\u662f\u4f7f\u7528 move \u5173\u952e\u5b57\u628a\u5f15\u7528\u7684\u503c\u76f4\u63a5 move \u8fdb\u95ed\u5305\u3002<\/p>\n

2.4 \u51fa\u73b0\u5728 supertrait \u7684\u4f4d\u7f6e\u4e0a<\/h3>\n

'static \u8fd8\u53ef\u4ee5\u51fa\u73b0\u5728 supertrait \u7684\u4f4d\u7f6e\u4e0a，\u4f46\u8fd9\u4e2a\u63cf\u8ff0\u672c\u8eab\u5c31\u6709\u4e00\u5b9a\u6b3a\u9a97\u6027，\u6c38\u8fdc\u4e0d\u8981\u628a 'static \u5f53\u6210 trait！\u51fa\u73b0\u5728 supertrait \u4f4d\u7f6e\u4e0a\u7684 'static \u5e76\u4e0d\u662f\u771f\u5f97 supertrait，\u5176\u5b9e\u8fd8\u662f\u7c7b\u578b\u7ea6\u675f，\u7ea6\u675f\u662f\u7684 self，\u4e5f\u5c31\u662f trait \u7684\u5b9e\u73b0\u8005\u3002\u770b\u4e0b\u9762\u8fd9\u4e2a\u4f8b\u5b50：<\/p>\n

trait<\/span> Plugin<\/span>:<\/span> 'static<\/span> {<\/span>
\n fn<\/span> run<\/span>(<\/span>&<\/span>self<\/span>)<\/span>;<\/span>
\n}<\/span><\/p>\n

struct<\/span> A<\/span> {<\/span> name:<\/span> String<\/span> }<\/span><\/p>\n

impl<\/span> Plugin<\/span> for<\/span> A<\/span> {<\/span> \/\/ A \u4e0d\u542b\u5f15\u7528\u5b57\u6bb5，\u53ef\u7f16\u8bd1<\/span>
\n fn<\/span> run<\/span>(<\/span>&<\/span>self<\/span>)<\/span> {<\/span> println!<\/span>(<\/span>"{}"<\/span>,<\/span> self<\/span>.<\/span>name)<\/span>;<\/span> }<\/span>
\n}<\/span><\/p>\n

struct<\/span> B<\/span><<\/span>'a<\/span>><\/span> {<\/span> src:<\/span> &<\/span>'a<\/span> str<\/span> }<\/span><\/p>\n

impl<\/span><<\/span>'a<\/span>><\/span> Plugin<\/span> for<\/span> B<\/span><<\/span>'a<\/span>><\/span> {<\/span> \/\/ B \u542b\u6709\u5f15\u7528\u5b57\u6bb5，\u65e0\u6cd5\u5b9e\u73b0 Plugin，\u7f16\u8bd1\u9519\u8bef<\/span>
\n fn<\/span> run<\/span>(<\/span>&<\/span>self<\/span>)<\/span> {<\/span> println!<\/span>(<\/span>"{}"<\/span>,<\/span> self<\/span>.<\/span>src)<\/span>;<\/span> }<\/span>
\n}<\/span><\/p>\n

2.5 \u4f5c\u4e3a\u751f\u547d\u5468\u671f\u6cdb\u578b\u53c2\u6570\u7684\u4e00\u4e2a\u201c\u5e38\u91cf\u201d<\/h3>\n

'static \u6700\u540e\u4e00\u79cd\u7528\u6cd5\u5c31\u662f\u4f5c\u4e3a\u751f\u547d\u5468\u671f\u53c2\u6570\u7684\u4e00\u4e2a\u201c\u5177\u4f53\u7c7b\u578b\u201d\u66ff\u6362\u5728\u6cdb\u578b\u4e2d\u58f0\u660e\u7684\u4e00\u4e2a\u751f\u547d\u5468\u671f\u3002'static \u662f\u552f\u4e00\u6709\u540d\u5b57\u7684\u5177\u4f53\u751f\u547d\u5468\u671f，\u53ef\u4ee5\u89c6\u4f5c 'a \u8fd9\u79cd\u751f\u547d\u5468\u671f\u53c2\u6570\u7684\u4e00\u4e2a\u201c\u5e38\u91cf\u201d，\u5b9e\u9645\u4e0a，'static \u7684\u8fd9\u79cd\u7528\u6cd5\u6211\u4eec\u5728 2.2.2 \u8282\u5df2\u7ecf\u4ecb\u7ecd\u5230\u4e86，\u5c31\u662f\u9488\u5bf9 struct D<'a> { s: &'a str } \u8fd9\u79cd \u5e26\u751f\u547d\u5468\u671f\u6807\u6ce8\u7684\u7ed3\u6784\u4f53，\u5f53\u6211\u4eec\u521b\u5efa\u4e00\u4e2a D \u7684\u5b9e\u4f8b\u65f6，\u4f20\u5165\u7684\u5f15\u7528\u4f1a\u628a\u751f\u547d\u5468\u671f\u7ea6\u675f\u5173\u7cfb\u5e26\u5165\u5230\u8fd9\u4e2a\u5b9e\u4f8b\u4e2d\u3002\u8fd9\u91cc\u6709\u4e00\u79cd\u7279\u6b8a\u573a\u666f：\u6211\u4eec\u53ef\u4ee5\u4f20\u5165 'static \u5f97\u5230\u4e00\u4e2a\u4e0d\u4f9d\u8d56\u5916\u90e8\u5f15\u7528\u6216\u8005\u53ea\u6709 'static \u5f15\u7528\u7684\u5177\u4f53\u7c7b\u578b\u3002\u4e0b\u9762，\u5217\u4e3e\u4e86\u4e09\u79cd\u5e38\u89c1\u7684\u51fa\u73b0\u5f62\u5f0f：<\/p>\n

struct<\/span> D<\/span><<\/span>'a<\/span>><\/span> {<\/span> s:<\/span> &<\/span>'a<\/span> str<\/span> }<\/span><\/p>\n

fn<\/span> f<\/span>(<\/span>d:<\/span> D<\/span><<\/span>'static<\/span>><\/span>)<\/span> {<\/span> …<\/span> }<\/span> \/\/ \u2611 \u4f5c\u4e3a\u53c2\u6570<\/span>
\ntype<\/span> StaticD<\/span> =<\/span> D<\/span><<\/span>'static<\/span>><\/span>;<\/span> \/\/ \u2611 \u7c7b\u578b\u522b\u540d<\/span>
\nlet<\/span> d:<\/span> D<\/span><<\/span>'static<\/span>><\/span> =<\/span> D<\/span> {<\/span> s:<\/span> "hi"<\/span> }<\/span>;<\/span> \/\/ \u2611 \u4f5c\u4e3a\u53d8\u91cf<\/span><\/p>\n

\u8fd9\u91cc，\u6211\u4eec\u8981\u6f84\u6e05\u4e24\u4e2a\u6982\u5ff5：\u751f\u547d\u5468\u671f\u6cdb\u578b\u53c2\u6570\u4e0e\u751f\u547d\u5468\u671f\u6807\u6ce8\u3002\u5bf9\u4e8e struct D<'a> { s: &'a str } \u800c\u8a00，\u5b83\u786e\u5b9e\u6709\u201c\u6cdb\u578b\u201d\u7684\u4e00\u9762，\u56e0\u4e3a\u5b83\u4f7f\u7528 <> \u58f0\u660e\u4e86\u6cdb\u578b\u53c2\u6570，\u800c\u91cc\u9762\u7684\u8fd9\u4e2a** 'a \u53eb\u751f\u547d\u5468\u671f\u6cdb\u578b\u53c2\u65702<\/sup>，\u7b80\u79f0：\u751f\u547d\u5468\u671f\u53c2\u6570，\u4f46\u5b83\u540c\u65f6\u4e5f\u662f\u751f\u547d\u5468\u671f\u6807\u6ce8，\u4e24\u79cd\u542b\u4e49\u5e76\u4e0d\u51b2\u7a81，\u5e76\u4e14\u4e5f\u5f88\u96be\u5265\u79bb\u5f00**\u3002<\/p>\n

\u901a\u5e38，\u6211\u662f\u5c06 'a \u770b\u4f5c\u4e00\u79cd\u751f\u547d\u5468\u671f\u6807\u6ce8，\u5f88\u5c11\u4f1a\u5c06\u5176\u770b\u4f5c\u4e00\u4e2a\u751f\u547d\u5468\u671f\u6cdb\u578b\u53c2\u6570，\u56e0\u4e3a：\u5f53 'a \u4f5c\u4e3a\u751f\u547d\u5468\u671f\u53c2\u6570\u65f6，\u5b83\u7684\u201c\u5177\u4f53\u503c\u201d\u662f\u5728\u5b9e\u4f8b\u5316\u7ed3\u6784\u4f53\u65f6，\u7531\u7f16\u8bd1\u5668\u6839\u636e\u4f20\u5165\u7684\u5f15\u7528\u81ea\u52a8\u63a8\u65ad\u51fa\u6765\u7684，\u5b83\u786e\u5b9e\u662f\u4e00\u4e2a\u5177\u4f53\u7684\u751f\u547d\u5468\u671f\u7684\u201c\u503c\u201d，\u8fd9\u662f 'a \u5177\u6709\u201c\u6cdb\u578b\u201d\u610f\u5473\u7684\u539f\u56e0，\u4f46\u662f，\u8fd9\u4e2a\u201c\u503c\u201d\u4f60\u662f\u5199\u4e0d\u51fa\u6765\u7684（\u4e5f\u4e0d\u9700\u8981\u5199\u51fa\u6765），\u63d0\u4f9b\u8fd9\u4e2a\u503c\u7684\u65b9\u5f0f\u662f\u5728\u8981\u5173\u8054\u7684\u5f15\u7528\u5b57\u6bb5\u4e0a\u6dfb\u52a0\u6807\u6ce8，\u7136\u540e\u8ba9\u7f16\u8bd1\u5668\u53bb\u63a8\u65ad\u3002<\/p>\n

\u6240\u4ee5，\u5728\u7edd\u5927\u591a\u6570\u60c5\u51b5\u4e0b，\u6211\u4eec\u662f\u4f53\u4f1a\u4e0d\u5230 'a \u4f5c\u4e3a\u751f\u547d\u5468\u671f\u6cdb\u578b\u53c2\u6570\u7684\u201c\u610f\u4e49\u201d，\u6839\u672c\u539f\u56e0\u5c31\u662f，\u6211\u4eec\u51e0\u4e4e\u5199\u4e0d\u51fa\u4e00\u79cd\u5177\u4f53\u7684\u751f\u547d\u5468\u671f\u7684\u201c\u503c\u201d，\u5168\u90fd\u662f\u9760\u5b83\u4f5c\u4e3a\u751f\u547d\u5468\u671f\u6807\u6ce8\u7531\u7f16\u8bd1\u5668\u81ea\u52a8\u63a8\u65ad\u7684，'a \u4f5c\u4e3a\u6cdb\u578b\u53c2\u6570\u7684\u90a3\u4e00\u9762\u5b8c\u5168\u88ab\u906e\u6321\u4e86\u3002\u5982\u679c\u6211\u4eec\u80fd\u660e\u786e\u5730\u5199\u51fa\u4e00\u79cd\u5177\u4f53\u7684\u751f\u547d\u5468\u671f，\u5c31\u53ef\u4ee5\u770b\u5230\u5b83\u4f5c\u4e3a\u201c\u751f\u547d\u5468\u671f\u6cdb\u578b\u53c2\u6570\u201d\u7684\u4e00\u9762，\u6709\u80fd\u5199\u51fa\u6765\u7684\u5177\u4f53\u7684\u751f\u547d\u5468\u671f\u5417？\u6709\u4e14\u53ea\u6709\u4e00\u4e2a，\u5c31\u662f 'static！\u8fd9\u5c31\u662f\u6211\u4eec\u80fd\u770b\u5230\u7684 <'a> \u6700\u50cf\u4e00\u4e2a\u6cdb\u578b\u53c2\u6570\u800c\u4e0d\u662f\u751f\u547d\u5468\u671f\u7ea6\u675f\u7684\u793a\u4f8b：<\/p>\n

struct<\/span> D<\/span><<\/span>'a<\/span>><\/span> {<\/span> s:<\/span> &<\/span>'a<\/span> str<\/span> }<\/span>
\nlet<\/span> d:<\/span> D<\/span><<\/span>'static<\/span>><\/span> =<\/span> D<\/span> {<\/span> s:<\/span> "hi"<\/span> }<\/span>;<\/span><\/p>\n

\n
  • \n

    \u5176\u5b9e\u662f\u6709\u4e09\u79cd，\u8fd8\u6709\u4e00\u79cd\u53eb outlives bound，\u6ca1\u6709\u5408\u9002\u7684\u4e2d\u6587\u8bd1\u540d，outlives \u610f\u4e3a：\u6bd4\u2026\u6d3b\u5f97\u4e45\u3002\u5178\u578b\u7684 outlives bound \u5199\u4f5c 'a: 'b，\u8bfb\u4f5c \u201ca outlives 'b\u201d，\u5b83\u7684\u610f\u601d\u662f： 'a: 'b 'a \u81f3\u5c11\u6d3b\u5f97\u8ddf 'b \u4e00\u6837\u4e45\u3002\u66f4\u591a\u4fe1\u606f\u53c2\u8003：https:\/\/nomicon.purewhite.io\/dropck.html \u21a9\ufe0e<\/p>\n<\/li>\n

  • \n

    Generic Parameter（\u6cdb\u578b\u53c2\u6570）\u5305\u542b\u4e09\u7c7b：Type Parameter（T）\u3001Lifetime Parameter（'a）\u3001Const Parameter（const N: usize）\u3002\u751f\u547d\u5468\u671f\u53c2\u6570\u662f\u6cdb\u578b\u53c2\u6570\u7684\u4e00\u79cd \u21a9\ufe0e<\/p>\n<\/li>\n","protected":false},"excerpt":{"rendered":"

    static \u751f\u547d\u5468\u671f\u7ea6\u675f\u603b\u7ed9\u4eba\u4e00\u79cd\u4e0d\u597d\u62ff\u634f\u7684\u611f\u89c9，\u56e0\u4e3a\u5b83\u51fa\u73b0\u5728\u4e0d\u540c\u4f4d\u7f6e\u4e0a\u65f6\u542b\u4e49\u4e5f\u4f1a\u6709\u6240\u4e0d\u540c，\u9700\u8981\u4ed4\u7ec6\u7504\u522b\u3002\u6b64\u5916，\u5b83\u8fd8\u603b\u4f1a\u548c\u5176\u4ed6\u4e00\u4e9b\u673a\u5236\u5173\u8054\u7740\u4e00\u8d77\u51fa\u73b0，\u6bd4\u5982\u95ed\u5305\u3001Fn trait\u3001\u751f\u547d\u5468\u671f\u7ea6\u675f\u4ee5\u53ca\u591a\u7ebf\u7a0b\u573a\u666f，\u8fd9\u4f1a\u589e\u52a0\u7406\u89e3\u7684\u56f0\u96be\u5ea6，\u6240\u4ee5，\u5bf9 static \u611f\u5230\u56f0\u60d1\u662f\u6b63\u5e38\u7684\u3002\u672c\u6587\u4f1a\u5e26\u9886\u5927\u5bb6\u5168\u9762\u4e86\u89e3\u4e00\u4e0b static \u751f\u547d\u5468\u671f\u7ea6\u675f\u3002\u672c\u6587\u539f\u6587\u94fe\u63a5：https:\/\/laure<\/p>\n","protected":false},"author":2,"featured_media":107298,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[12174,12176,9882,12175,206],"topic":[],"class_list":["post-107299","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-static","tag-12176","tag-9882","tag-12175","tag-rust"],"yoast_head":"\n\u56f0\u60d1\u662f\u6b63\u5e38\u7684,\u2018static \u751f\u547d\u5468\u671f\u7ea6\u675f\u672c\u6765\u5c31\u4e0d\u7b80\u5355 - 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