{"id":78348,"date":"2026-02-27T08:24:52","date_gmt":"2026-02-27T00:24:52","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/78348.html"},"modified":"2026-02-27T08:24:52","modified_gmt":"2026-02-27T00:24:52","slug":"rust%e5%85%a5%e9%97%a8%e6%95%99%e7%a8%8b-2","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/78348.html","title":{"rendered":"rust\u5165\u95e8\u6559\u7a0b (2)"},"content":{"rendered":"

Rust \u5165\u95e8\u6559\u7a0b 2：\u6240\u6709\u6743\u3001\u501f\u7528\u4e0e\u5f15\u7528<\/h2>\n

\u5728\u4e0a\u4e00\u6559\u7a0b\u4e2d，\u6211\u4eec\u5b66\u4e60\u4e86 Rust \u7684\u57fa\u7840\u8bed\u6cd5\u3001\u53d8\u91cf\u7ed1\u5b9a\u548c\u6570\u636e\u7c7b\u578b\u3002\u4eca\u5929，\u6211\u4eec\u5c06\u6df1\u5165 Rust \u6700\u6838\u5fc3\u7684\u6982\u5ff5：\u6240\u6709\u6743（Ownership）\u3001\u501f\u7528（Borrowing） \u548c \u5f15\u7528（References）\u3002\u8fd9\u4e9b\u6982\u5ff5\u662f Rust \u5185\u5b58\u5b89\u5168\u4fdd\u8bc1\u7684\u57fa\u77f3，\u4e5f\u662f\u521d\u5b66\u8005\u6700\u9700\u8981\u82b1\u65f6\u95f4\u7406\u89e3\u7684\u90e8\u5206\u3002<\/p>\n

1. \u6240\u6709\u6743（Ownership）<\/h3>\n

\u6240\u6709\u6743\u662f Rust \u72ec\u7279\u7684\u5185\u5b58\u7ba1\u7406\u7cfb\u7edf\u3002\u5b83\u65e2\u6ca1\u6709\u5783\u573e\u56de\u6536\u5668（GC），\u4e5f\u4e0d\u4f9d\u8d56\u7a0b\u5e8f\u5458\u624b\u52a8\u5206\u914d\u548c\u91ca\u653e\u5185\u5b58，\u800c\u662f\u901a\u8fc7\u4e00\u5957\u89c4\u5219\u5728\u7f16\u8bd1\u65f6\u8fdb\u884c\u68c0\u67e5\u3002<\/p>\n

1.1 \u6240\u6709\u6743\u89c4\u5219<\/h4>\n
  • \u6bcf\u4e2a\u503c\u5728 Rust \u4e2d\u90fd\u6709\u4e00\u4e2a\u53d8\u91cf\u4f5c\u4e3a\u5b83\u7684\u6240\u6709\u8005（Owner）\u3002<\/li>\n
  • \u4e00\u4e2a\u503c\u5728\u540c\u4e00\u65f6\u523b\u53ea\u80fd\u6709\u4e00\u4e2a\u6240\u6709\u8005\u3002<\/li>\n
  • \u5f53\u6240\u6709\u8005\u79bb\u5f00\u4f5c\u7528\u57df\u65f6，\u8fd9\u4e2a\u503c\u5c06\u88ab\u4e22\u5f03（\u5185\u5b58\u88ab\u91ca\u653e）\u3002<\/li>\n

    1.2 \u4f5c\u7528\u57df<\/h4>\n

    \u4e0e\u5f88\u591a\u7f16\u7a0b\u8bed\u8a00\u7c7b\u4f3c，Rust \u4f7f\u7528\u5927\u62ec\u53f7 {} \u6765\u5b9a\u4e49\u4f5c\u7528\u57df\u3002\u53d8\u91cf\u5728\u4f5c\u7528\u57df\u5185\u6709\u6548\u3002<\/p>\n

    fn<\/span> main<\/span>(<\/span>)<\/span> {<\/span>
    \n \/\/ s \u5728\u8fd9\u91cc\u65e0\u6548，\u56e0\u4e3a\u5b83\u5c1a\u672a\u58f0\u660e<\/span>
    \n let<\/span> s =<\/span> \\\\"hello\\\\";<\/span> \/\/ s \u4ece\u8fd9\u91cc\u5f00\u59cb\u6709\u6548<\/span>
    \n println!<\/span>(<\/span>\\\\"{<\/span>}<\/span>\\\\",<\/span> s)<\/span>;<\/span>
    \n}<\/span> \/\/ \u4f5c\u7528\u57df\u7ed3\u675f，s \u4e0d\u518d\u6709\u6548<\/span><\/p>\n

    1.3 \u79fb\u52a8（Move）<\/h4>\n

    \u8ba9\u6211\u4eec\u6765\u770b\u4e00\u4e2a\u7a0d\u590d\u6742\u7684\u4f8b\u5b50\u3002\u8fd9\u91cc\u6d89\u53ca\u5230 String \u7c7b\u578b，\u5b83\u5b58\u50a8\u5728\u5806\u4e0a\u3002<\/p>\n

    fn<\/span> main<\/span>(<\/span>)<\/span> {<\/span>
    \n let<\/span> s1 =<\/span> String<\/span>::<\/span>from<\/span>(<\/span>\\\\"hello\\\\")<\/span>;<\/span>
    \n let<\/span> s2 =<\/span> s1;<\/span><\/p>\n

    \/\/ println!(\\\\"{}\\\\", s1); \/\/ \u8fd9\u884c\u4f1a\u5bfc\u81f4\u7f16\u8bd1\u9519\u8bef！<\/span>
    \n println!<\/span>(<\/span>\\\\"{<\/span>}<\/span>\\\\",<\/span> s2)<\/span>;<\/span> \/\/ \u6b63\u5e38\u8fd0\u884c<\/span>
    \n}<\/span><\/p>\n

    \u4e3a\u4ec0\u4e48 s1 \u4e0d\u80fd\u518d\u4f7f\u7528\u4e86？\u8fd9\u662f\u56e0\u4e3a let s2 = s1 \u53d1\u751f\u4e86\u4e00\u6b21 \u79fb\u52a8（Move）\u3002<\/p>\n

      \n
    • String \u7531\u4e09\u90e8\u5206\u7ec4\u6210：\u6307\u5411\u5806\u5185\u5b58\u7684\u6307\u9488\u3001\u957f\u5ea6\u3001\u5bb9\u91cf\u3002\u8fd9\u4e9b\u6570\u636e\u5b58\u50a8\u5728\u6808\u4e0a\u3002<\/li>\n
    • \u771f\u6b63\u7684\u5b57\u7b26\u4e32\u5185\u5bb9 \\\\"hello\\\\" \u5b58\u50a8\u5728\u5806\u4e0a\u3002<\/li>\n
    • \u5f53\u6211\u4eec\u5c06 s1 \u8d4b\u503c\u7ed9 s2 \u65f6，Rust \u6d45\u62f7\u8d1d\u4e86\u6808\u4e0a\u7684\u6307\u9488\u3001\u957f\u5ea6\u548c\u5bb9\u91cf\u3002<\/li>\n
    • \u4e3a\u4e86\u907f\u514d s1 \u548c s2 \u540c\u65f6\u6307\u5411\u540c\u4e00\u5757\u5806\u5185\u5b58（\u5bfc\u81f4\u201c\u53cc\u500d\u91ca\u653e\u201d\u9519\u8bef），Rust \u7acb\u5373\u5c06 s1 \u7f6e\u4e3a\u65e0\u6548\u3002<\/li>\n
    • \u56e0\u6b64，s1 \u7684\u6240\u6709\u6743\u88ab \u79fb\u52a8 \u5230\u4e86 s2\u3002<\/li>\n<\/ul>\n

      1.4 \u514b\u9686（Clone）<\/h4>\n

      \u5982\u679c\u6211\u4eec\u786e\u5b9e\u9700\u8981\u6df1\u5ea6\u590d\u5236\u5806\u4e0a\u7684\u6570\u636e，\u53ef\u4ee5\u4f7f\u7528 clone \u65b9\u6cd5\u3002<\/p>\n

      fn<\/span> main<\/span>(<\/span>)<\/span> {<\/span>
      \n let<\/span> s1 =<\/span> String<\/span>::<\/span>from<\/span>(<\/span>\\\\"hello\\\\")<\/span>;<\/span>
      \n let<\/span> s2 =<\/span> s1.<\/span>clone<\/span>(<\/span>)<\/span>;<\/span><\/p>\n

      println!<\/span>(<\/span>\\\\"s1 =<\/span> {<\/span>}<\/span>,<\/span> s2 =<\/span> {<\/span>}<\/span>\\\\",<\/span> s1,<\/span> s2)<\/span>;<\/span> \/\/ \u73b0\u5728\u90fd\u53ef\u4ee5\u4f7f\u7528\u4e86<\/span>
      \n}<\/span><\/p>\n

      1.5 \u6808\u6570\u636e：\u590d\u5236（Copy）<\/h4>\n

      \u50cf\u6574\u6570\u3001\u5e03\u5c14\u3001\u6d6e\u70b9\u6570\u8fd9\u4e9b\u5728\u7f16\u8bd1\u65f6\u5927\u5c0f\u5df2\u77e5\u7684\u7c7b\u578b，\u5b8c\u5168\u5b58\u50a8\u5728\u6808\u4e0a，\u56e0\u6b64\u590d\u5236\u5b83\u4eec\u975e\u5e38\u5feb\u3002\u5bf9\u4e8e\u8fd9\u7c7b\u5b9e\u73b0\u4e86 Copy trait \u7684\u7c7b\u578b，\u8d4b\u503c\u64cd\u4f5c\u4f1a\u8fdb\u884c\u5b8c\u6574\u7684\u590d\u5236，\u4e0d\u4f1a\u53d1\u751f\u79fb\u52a8\u3002<\/p>\n

      fn<\/span> main<\/span>(<\/span>)<\/span> {<\/span>
      \n let<\/span> x =<\/span> 5<\/span>;<\/span>
      \n let<\/span> y =<\/span> x;<\/span> \/\/ x \u6ca1\u6709\u88ab\u79fb\u52a8，\u800c\u662f\u88ab\u590d\u5236\u4e86<\/span><\/p>\n

      println!<\/span>(<\/span>\\\\"x =<\/span> {<\/span>}<\/span>,<\/span> y =<\/span> {<\/span>}<\/span>\\\\",<\/span> x,<\/span> y)<\/span>;<\/span> \/\/ x \u4ecd\u7136\u6709\u6548<\/span>
      \n}<\/span><\/p>\n

      1.6 \u51fd\u6570\u4e0e\u6240\u6709\u6743<\/h4>\n

      \u5c06\u53d8\u91cf\u4f20\u9012\u7ed9\u51fd\u6570\u4e5f\u4f1a\u53d1\u751f\u79fb\u52a8\u6216\u590d\u5236\u3002<\/p>\n

      fn<\/span> main<\/span>(<\/span>)<\/span> {<\/span>
      \n let<\/span> s =<\/span> String<\/span>::<\/span>from<\/span>(<\/span>\\\\"hello\\\\")<\/span>;<\/span>
      \n takes_ownership<\/span>(<\/span>s)<\/span>;<\/span> \/\/ s \u7684\u503c\u79fb\u52a8\u5230\u51fd\u6570\u91cc<\/span>
      \n \/\/ println!(\\\\"{}\\\\", s); \/\/ \u8fd9\u91cc s \u5df2\u7ecf\u65e0\u6548，\u7f16\u8bd1\u9519\u8bef<\/span><\/p>\n

      let<\/span> x =<\/span> 5<\/span>;<\/span>
      \n makes_copy<\/span>(<\/span>x)<\/span>;<\/span> \/\/ x \u662f Copy \u7c7b\u578b，\u4ecd\u7136\u6709\u6548<\/span>
      \n println!<\/span>(<\/span>\\\\"{<\/span>}<\/span>\\\\",<\/span> x)<\/span>;<\/span> \/\/ \u6b63\u5e38\u8fd0\u884c<\/span>
      \n}<\/span><\/p>\n

      fn<\/span> takes_ownership<\/span>(<\/span>some_string:<\/span> String<\/span>)<\/span> {<\/span>
      \n println!<\/span>(<\/span>\\\\"{<\/span>}<\/span>\\\\",<\/span> some_string)<\/span>;<\/span>
      \n}<\/span> \/\/ some_string \u79bb\u5f00\u4f5c\u7528\u57df，\u5185\u5b58\u88ab\u91ca\u653e<\/span><\/p>\n

      fn<\/span> makes_copy<\/span>(<\/span>some_integer:<\/span> i32<\/span>)<\/span> {<\/span>
      \n println!<\/span>(<\/span>\\\\"{<\/span>}<\/span>\\\\",<\/span> some_integer)<\/span>;<\/span>
      \n}<\/span><\/p>\n

      1.7 \u8fd4\u56de\u503c\u4e0e\u6240\u6709\u6743<\/h4>\n

      \u51fd\u6570\u8fd4\u56de\u503c\u4e5f\u53ef\u4ee5\u8f6c\u79fb\u6240\u6709\u6743\u3002<\/p>\n

      fn<\/span> main<\/span>(<\/span>)<\/span> {<\/span>
      \n let<\/span> s1 =<\/span> gives_ownership<\/span>(<\/span>)<\/span>;<\/span> \/\/ \u8fd4\u56de\u503c\u79fb\u52a8\u5230 s1<\/span>
      \n let<\/span> s2 =<\/span> String<\/span>::<\/span>from<\/span>(<\/span>\\\\"hello\\\\")<\/span>;<\/span>
      \n let<\/span> s3 =<\/span> takes_and_gives_back<\/span>(<\/span>s2)<\/span>;<\/span> \/\/ s2 \u79fb\u52a8\u5230\u51fd\u6570，\u51fd\u6570\u518d\u5c06\u8fd4\u56de\u503c\u79fb\u52a8\u5230 s3<\/span>
      \n \/\/ println!(\\\\"{}\\\\", s2); \/\/ s2 \u5df2\u7ecf\u65e0\u6548<\/span>
      \n println!<\/span>(<\/span>\\\\"s1 =<\/span> {<\/span>}<\/span>,<\/span> s3 =<\/span> {<\/span>}<\/span>\\\\",<\/span> s1,<\/span> s3)<\/span>;<\/span>
      \n}<\/span><\/p>\n

      fn<\/span> gives_ownership<\/span>(<\/span>)<\/span> -><\/span> String<\/span> {<\/span>
      \n let<\/span> some_string =<\/span> String<\/span>::<\/span>from<\/span>(<\/span>\\\\"hello\\\\")<\/span>;<\/span>
      \n some_string \/\/ \u8fd4\u56de，\u6240\u6709\u6743\u8f6c\u79fb\u7ed9\u8c03\u7528\u8005<\/span>
      \n}<\/span><\/p>\n

      fn<\/span> takes_and_gives_back<\/span>(<\/span>a_string:<\/span> String<\/span>)<\/span> -><\/span> String<\/span> {<\/span>
      \n a_string \/\/ \u8fd4\u56de，\u6240\u6709\u6743\u8f6c\u79fb\u7ed9\u8c03\u7528\u8005<\/span>
      \n}<\/span><\/p>\n

      2. \u5f15\u7528\u4e0e\u501f\u7528<\/h3>\n

      \u6bcf\u6b21\u90fd\u8981\u628a\u6240\u6709\u6743\u4f20\u6765\u4f20\u53bb\u5f88\u9ebb\u70e6\u3002\u5982\u679c\u6211\u4eec\u53ea\u662f\u60f3\u4f7f\u7528\u4e00\u4e2a\u503c\u800c\u4e0d\u83b7\u53d6\u5176\u6240\u6709\u6743，\u53ef\u4ee5\u4f7f\u7528 \u5f15\u7528（References）\u3002<\/p>\n

      2.1 \u5f15\u7528<\/h4>\n

      \u5f15\u7528\u5141\u8bb8\u4f60\u5f15\u7528\u67d0\u4e2a\u503c\u800c\u4e0d\u83b7\u53d6\u5176\u6240\u6709\u6743\u3002<\/p>\n

      fn<\/span> main<\/span>(<\/span>)<\/span> {<\/span>
      \n let<\/span> s1 =<\/span> String<\/span>::<\/span>from<\/span>(<\/span>\\\\"hello\\\\")<\/span>;<\/span>
      \n let<\/span> len =<\/span> calculate_length<\/span>(<\/span>&<\/span>s1)<\/span>;<\/span> \/\/ \u4f20\u9012 s1 \u7684\u5f15\u7528<\/span>
      \n println!<\/span>(<\/span>\\\\"The<\/span> length of '{<\/span>}<\/span>' is {<\/span>}<\/span>.<\/span>\\\\",<\/span> s1,<\/span> len)<\/span>;<\/span> \/\/ s1 \u4ecd\u7136\u6709\u6548<\/span>
      \n}<\/span><\/p>\n

      fn<\/span> calculate_length<\/span>(<\/span>s:<\/span> &<\/span>String<\/span>)<\/span> -><\/span> usize<\/span> {<\/span> \/\/ s \u662f\u5bf9 String \u7684\u5f15\u7528<\/span>
      \n s.<\/span>len<\/span>(<\/span>)<\/span>
      \n}<\/span> \/\/ s \u79bb\u5f00\u4f5c\u7528\u57df，\u4f46\u5b83\u4e0d\u62e5\u6709\u6240\u6709\u6743，\u6240\u4ee5\u4e0d\u4f1a\u53d1\u751f drop<\/span><\/p>\n

      \u8fd9\u91cc &s1 \u8bed\u6cd5\u521b\u5efa\u4e86\u4e00\u4e2a\u6307\u5411 s1 \u503c\u7684\u5f15\u7528，\u4f46\u6ca1\u6709\u83b7\u53d6\u5b83\u7684\u6240\u6709\u6743\u3002\u56e0\u4e3a\u4e0d\u62e5\u6709\u5b83，\u6240\u4ee5\u5f53\u5f15\u7528\u79bb\u5f00\u4f5c\u7528\u57df\u65f6，\u5b83\u6307\u5411\u7684\u503c\u4e0d\u4f1a\u88ab\u4e22\u5f03\u3002\u8fd9\u79cd\u901a\u8fc7\u5f15\u7528\u4f20\u9012\u53c2\u6570\u7684\u884c\u4e3a\u79f0\u4e3a \u501f\u7528（Borrowing）\u3002<\/p>\n

      2.2 \u53ef\u53d8\u5f15\u7528<\/h4>\n

      \u9ed8\u8ba4\u60c5\u51b5\u4e0b，\u5f15\u7528\u662f\u4e0d\u53ef\u53d8\u7684\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 &mut \u6765\u521b\u5efa\u53ef\u53d8\u5f15\u7528，\u4ece\u800c\u4fee\u6539\u501f\u7528\u7684\u503c\u3002<\/p>\n

      fn<\/span> main<\/span>(<\/span>)<\/span> {<\/span>
      \n let<\/span> mut<\/span> s =<\/span> String<\/span>::<\/span>from<\/span>(<\/span>\\\\"hello\\\\")<\/span>;<\/span>
      \n change<\/span>(<\/span>&<\/span>mut<\/span> s)<\/span>;<\/span> \/\/ \u4f20\u9012\u53ef\u53d8\u5f15\u7528<\/span>
      \n println!<\/span>(<\/span>\\\\"{<\/span>}<\/span>\\\\",<\/span> s)<\/span>;<\/span> \/\/ \u8f93\u51fa \\\\"hello, world\\\\"<\/span>
      \n}<\/span><\/p>\n

      fn<\/span> change<\/span>(<\/span>some_string:<\/span> &<\/span>mut<\/span> String<\/span>)<\/span> {<\/span>
      \n some_string.<\/span>push_str<\/span>(<\/span>\\\\",<\/span> world\\\\")<\/span>;<\/span>
      \n}<\/span><\/p>\n

      \u53ef\u53d8\u5f15\u7528\u6709\u4e00\u4e2a\u91cd\u8981\u9650\u5236：\u5728\u7279\u5b9a\u4f5c\u7528\u57df\u5185，\u5bf9\u4e8e\u67d0\u4e00\u5757\u6570\u636e，\u53ea\u80fd\u6709\u4e00\u4e2a\u6d3b\u8dc3\u7684\u53ef\u53d8\u5f15\u7528\u3002<\/p>\n

      let<\/span> mut<\/span> s =<\/span> String<\/span>::<\/span>from<\/span>(<\/span>\\\\"hello\\\\")<\/span>;<\/span><\/p>\n

      let<\/span> r1 =<\/span> &<\/span>mut<\/span> s;<\/span>
      \nlet<\/span> r2 =<\/span> &<\/span>mut<\/span> s;<\/span> \/\/ \u7f16\u8bd1\u9519\u8bef：\u4e0d\u80fd\u591a\u6b21\u501f\u7528 s \u4f5c\u4e3a\u53ef\u53d8\u5f15\u7528<\/span><\/p>\n

      \u8fd9\u4e2a\u9650\u5236\u9632\u6b62\u4e86\u6570\u636e\u7ade\u4e89\u3002<\/p>\n

      2.3 \u5f15\u7528\u7684\u89c4\u5219<\/h4>\n

      \u603b\u7ed3\u4e00\u4e0b\u5f15\u7528\u7684\u89c4\u5219：<\/p>\n

        \n
      • \u5728\u4efb\u610f\u7ed9\u5b9a\u65f6\u95f4，\u8981\u4e48 \u53ea\u80fd\u6709\u4e00\u4e2a\u53ef\u53d8\u5f15\u7528，\u8981\u4e48 \u53ea\u80fd\u6709\u591a\u4e2a\u4e0d\u53ef\u53d8\u5f15\u7528\u3002<\/li>\n
      • \u5f15\u7528\u5fc5\u987b\u603b\u662f\u6709\u6548\u7684（\u4e0d\u80fd\u662f\u60ac\u5782\u5f15\u7528）\u3002<\/li>\n<\/ul>\n

        3. \u5207\u7247（Slice）<\/h3>\n

        \u5207\u7247\u662f\u53e6\u4e00\u79cd\u4e0d\u6301\u6709\u6240\u6709\u6743\u7684\u6570\u636e\u7c7b\u578b\u3002\u5b83\u5141\u8bb8\u4f60\u5f15\u7528\u96c6\u5408\u4e2d\u7684\u4e00\u6bb5\u8fde\u7eed\u5143\u7d20\u5e8f\u5217，\u800c\u4e0d\u662f\u6574\u4e2a\u96c6\u5408\u3002<\/p>\n

        3.1 \u5b57\u7b26\u4e32\u5207\u7247<\/h4>\n

        fn<\/span> main<\/span>(<\/span>)<\/span> {<\/span>
        \n let<\/span> s =<\/span> String<\/span>::<\/span>from<\/span>(<\/span>\\\\"hello world\\\\")<\/span>;<\/span><\/p>\n

        let<\/span> hello =<\/span> &<\/span>s[<\/span>0<\/span>..<\/span>5<\/span>]<\/span>;<\/span> \/\/ \u5305\u542b 0，\u4e0d\u5305\u542b 5<\/span>
        \n let<\/span> world =<\/span> &<\/span>s[<\/span>6<\/span>..<\/span>11<\/span>]<\/span>;<\/span> \/\/ \u5305\u542b 6，\u4e0d\u5305\u542b 11<\/span><\/p>\n

        println!<\/span>(<\/span>\\\\"{<\/span>}<\/span>,<\/span> {<\/span>}<\/span>\\\\",<\/span> hello,<\/span> world)<\/span>;<\/span> \/\/ \u8f93\u51fa \\\\"hello, world\\\\"<\/span>
        \n}<\/span><\/p>\n

        .. \u662f\u8303\u56f4\u8bed\u6cd5，\u6709\u591a\u79cd\u5199\u6cd5：<\/p>\n

        let<\/span> s =<\/span> String<\/span>::<\/span>from<\/span>(<\/span>\\\\"hello\\\\")<\/span>;<\/span><\/p>\n

        let<\/span> slice1 =<\/span> &<\/span>s[<\/span>0<\/span>..<\/span>2<\/span>]<\/span>;<\/span> \/\/ \\\\"he\\\\"<\/span>
        \nlet<\/span> slice2 =<\/span> &<\/span>s[<\/span>..<\/span>2<\/span>]<\/span>;<\/span> \/\/ \u4ece\u5f00\u5934\u5230\u7d22\u5f15 2，\u7b49\u540c\u4e8e &s[0..2]<\/span>
        \nlet<\/span> slice3 =<\/span> &<\/span>s[<\/span>2<\/span>..<\/span>5<\/span>]<\/span>;<\/span> \/\/ \\\\"llo\\\\"<\/span>
        \nlet<\/span> slice4 =<\/span> &<\/span>s[<\/span>2<\/span>..<\/span>]<\/span>;<\/span> \/\/ \u4ece\u7d22\u5f15 2 \u5230\u7ed3\u5c3e<\/span>
        \nlet<\/span> slice5 =<\/span> &<\/span>s[<\/span>..<\/span>]<\/span>;<\/span> \/\/ \u6574\u4e2a\u5b57\u7b26\u4e32<\/span><\/p>\n

        3.2 \u5b57\u7b26\u4e32\u5b57\u9762\u91cf\u5c31\u662f\u5207\u7247<\/h4>\n

        \u8fd8\u8bb0\u5f97\u6211\u4eec\u4e4b\u524d\u8bf4\u7684 let s = \\\\"hello\\\\"; \u5417？\u8fd9\u91cc\u7684 s \u5b9e\u9645\u4e0a\u662f\u4e00\u4e2a &str \u7c7b\u578b，\u5b83\u662f\u4e00\u4e2a\u6307\u5411\u4e8c\u8fdb\u5236\u7a0b\u5e8f\u7279\u5b9a\u4f4d\u7f6e\u7684\u5207\u7247\u3002<\/p>\n

        let<\/span> s =<\/span> \\\\"hello world\\\\";<\/span> \/\/ s: &str<\/span><\/p>\n

        3.3 \u5176\u4ed6\u7c7b\u578b\u7684\u5207\u7247<\/h4>\n

        \u6570\u7ec4\u4e5f\u53ef\u4ee5\u6709\u5207\u7247：<\/p>\n

        let<\/span> a =<\/span> [<\/span>1<\/span>,<\/span> 2<\/span>,<\/span> 3<\/span>,<\/span> 4<\/span>,<\/span> 5<\/span>]<\/span>;<\/span>
        \nlet<\/span> slice =<\/span> &<\/span>a[<\/span>1<\/span>..<\/span>3<\/span>]<\/span>;<\/span> \/\/ \u7c7b\u578b\u662f &[i32]，\u5305\u542b [2, 3]<\/span><\/p>\n

        4. \u603b\u7ed3<\/h3>\n

        \u672c\u7ae0\u6211\u4eec\u5b66\u4e60\u4e86 Rust \u7684\u6838\u5fc3\u6982\u5ff5：<\/p>\n

          \n
        • \u6240\u6709\u6743：\u6bcf\u4e2a\u503c\u90fd\u6709\u552f\u4e00\u7684\u6240\u6709\u8005，\u6240\u6709\u8005\u79bb\u5f00\u4f5c\u7528\u57df\u65f6\u503c\u88ab\u91ca\u653e<\/li>\n
        • \u79fb\u52a8：\u8d4b\u503c\u6216\u4f20\u53c2\u65f6，\u6240\u6709\u6743\u53ef\u80fd\u88ab\u8f6c\u79fb<\/li>\n
        • \u501f\u7528：\u901a\u8fc7\u5f15\u7528\u8bbf\u95ee\u503c\u800c\u4e0d\u83b7\u53d6\u6240\u6709\u6743<\/li>\n
        • \u5f15\u7528\u89c4\u5219：\u8981\u4e48\u4e00\u4e2a\u53ef\u53d8\u5f15\u7528，\u8981\u4e48\u591a\u4e2a\u4e0d\u53ef\u53d8\u5f15\u7528<\/li>\n
        • \u5207\u7247：\u5bf9\u96c6\u5408\u7684\u90e8\u5206\u5f15\u7528<\/li>\n<\/ul>\n

          \u8fd9\u4e9b\u6982\u5ff5\u662f\u7406\u89e3 Rust \u5185\u5b58\u5b89\u5168\u7684\u57fa\u7840\u3002\u867d\u7136\u4e00\u5f00\u59cb\u53ef\u80fd\u6709\u4e9b\u62bd\u8c61，\u4f46\u968f\u7740\u7ec3\u4e60\u4f1a\u9010\u6e10\u719f\u6089\u3002\u4e0b\u4e00\u7ae0\u6211\u4eec\u5c06\u5b66\u4e60 Rust \u7684\u7ed3\u6784\u4f53\u548c\u65b9\u6cd5！<\/p>\n","protected":false},"excerpt":{"rendered":"

          Rust \u5165\u95e8\u6559\u7a0b 2：\u6240\u6709\u6743\u3001\u501f\u7528\u4e0e\u5f15\u7528
          \n\u5728\u4e0a\u4e00\u6559\u7a0b\u4e2d，\u6211\u4eec\u5b66\u4e60\u4e86 Rust \u7684\u57fa\u7840\u8bed\u6cd5\u3001\u53d8\u91cf\u7ed1\u5b9a\u548c\u6570\u636e\u7c7b\u578b\u3002\u4eca\u5929，\u6211\u4eec\u5c06\u6df1\u5165 Rust \u6700\u6838\u5fc3\u7684\u6982\u5ff5：\u6240\u6709\u6743（Ownership）\u3001\u501f\u7528（Borrowing） \u548c \u5f15\u7528（References）\u3002\u8fd9\u4e9b\u6982\u5ff5\u662f Rust \u5185\u5b58\u5b89\u5168\u4fdd\u8bc1\u7684\u57fa\u77f3，\u4e5f\u662f\u521d\u5b66\u8005\u6700\u9700\u8981\u82b1\u65f6\u95f4\u7406\u89e3\u7684\u90e8\u5206\u3002
          \n1<\/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":[206,292,190],"topic":[],"class_list":["post-78348","post","type-post","status-publish","format-standard","hentry","category-server","tag-rust","tag-292","tag-190"],"yoast_head":"\nrust\u5165\u95e8\u6559\u7a0b (2) - \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\/78348.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"rust\u5165\u95e8\u6559\u7a0b (2) - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"Rust \u5165\u95e8\u6559\u7a0b 2：\u6240\u6709\u6743\u3001\u501f\u7528\u4e0e\u5f15\u7528 \u5728\u4e0a\u4e00\u6559\u7a0b\u4e2d，\u6211\u4eec\u5b66\u4e60\u4e86 Rust \u7684\u57fa\u7840\u8bed\u6cd5\u3001\u53d8\u91cf\u7ed1\u5b9a\u548c\u6570\u636e\u7c7b\u578b\u3002\u4eca\u5929，\u6211\u4eec\u5c06\u6df1\u5165 Rust \u6700\u6838\u5fc3\u7684\u6982\u5ff5：\u6240\u6709\u6743（Ownership）\u3001\u501f\u7528（Borrowing） \u548c \u5f15\u7528（References）\u3002\u8fd9\u4e9b\u6982\u5ff5\u662f Rust \u5185\u5b58\u5b89\u5168\u4fdd\u8bc1\u7684\u57fa\u77f3，\u4e5f\u662f\u521d\u5b66\u8005\u6700\u9700\u8981\u82b1\u65f6\u95f4\u7406\u89e3\u7684\u90e8\u5206\u3002 1\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/78348.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-02-27T00:24:52+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=\"3 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/78348.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/78348.html\",\"name\":\"rust\u5165\u95e8\u6559\u7a0b (2) - 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