{"id":163618,"date":"2020-10-03T14:51:49","date_gmt":"2020-10-03T06:51:49","guid":{"rendered":"http:\/\/4563.org\/?p=163618"},"modified":"2020-10-03T14:51:49","modified_gmt":"2020-10-03T06:51:49","slug":"%e7%86%9f%e7%b7%b4%e4%ba%86-c%ef%bc%8c%e8%a2%ab-c%e6%8a%8a%e4%b8%96%e7%95%8c%e8%a7%80%e6%90%9e%e5%b4%a9%e5%a3%9e%e4%ba%86","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=163618","title":{"rendered":"\u719f\u7df4\u4e86 C\uff0c\u88ab C++\u628a\u4e16\u754c\u89c0\u641e\u5d29\u58de\u4e86"},"content":{"rendered":"
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\u719f\u7df4\u4e86 C\uff0c\u88ab C++\u628a\u4e16\u754c\u89c0\u641e\u5d29\u58de\u4e86 <\/h1>\n

<\/p>\n

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\u8cc7\u6df1\u5927\u4f6c : bitdepth <\/span> <\/i> 4<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\u6211\u4e0d\u6562\u8aaa\u6211\u5f88\u7406\u89e3 C \u7576\u4e2d\u7684\u8a9e\u6cd5\uff0c\u6c34\u6e96\u4e5f\u5c31\u7d66 linux kernel \u5beb\u5beb patch\uff0c\u6703\u4fee\u88dc\u4e00\u4e0b gtk+\u7a0b\u5f0f\u3002<\/p>\n

\u56e0\u70ba\u6700\u8fd1\u5de5\u4f5c\u7684\u95dc\u4fc2\uff0c\u8981\u958b\u59cb\u7528 C++ \u525b\u958b\u59cb\u7684\u6642\u5019\u7279\u5225\u4e0d\u7406\u89e3 template \u7684\u7528\u6cd5\uff0c\u5f8c\u4f86\u767c\u73fe\u53ea\u662f\u4e00\u500b\u9650\u5236\u5f88\u591a\u7684 macro\uff0c\u7576\u7136\u5f88\u8907\u96dc\u7684\u7528\u8655\u9084\u662f\u4e0d\u61c2\u3002<\/p>\n

smart pointer \u7684 concepts \u82b1\u4e86\u5f88\u591a\u6642\u9593\u624d\u660e\u767d\u3002<\/p>\n

    \n
  1. \u7b2c\u4e00\u662f c++\u5c0d type \u7684\u8981\u6c42\u975e\u5e38\u56b4\u683c\uff0c\u985e\u4f3c\u5728 C \u4e2d void *\u9019\u6a23\u7684\u5132\u5b58\u662f\u7d55\u5c0d\u4e0d\u5141\u8a31\u7684\u3002<\/li>\n
  2. \u4e5f\u662f\u641e\u4e0d\u61c2\u4e0a\u9762\u8b1b\u7684 template\uff0c\u4e00\u76f4\u4e0d\u61c2\u600e\u9ebc\u5728 wrapper class \u7576\u4e2d\u653e\u4e0b\u90a3\u9ebc\u591a\u578b\u5225\u7684\u8cc7\u6599\uff0c\u5f8c\u4f86\u624d\u767c\u73fe\u9700\u8981\u4f9d\u8cf4\u985e\u4f3c std::variant \u9019\u6a23\u7684\u65b9\u6cd5\u3002<\/li>\n
  3. ownership \u7684\u63a7\u5236\uff0c\u4ec0\u9ebc\u6642\u5019\u53ef\u4ee5\u7528\u4e00\u4e0b raw pointer \u4e0d\u662f\u4ec0\u9ebc\u5730\u65b9\u90fd\u8981\u5805\u6301\u53ea\u80fd\u7528\u65b0\u7684 smart pointer<\/li>\n
  4. \u5c0d class destructor \u7684\u8981\u6c42\uff0c\u6211\u4e4b\u524d\u4e0d\u77e5\u9053 C++ compiler \u6703\u5e6b\u5fd9\u586b\u5145 vtable \u548c\u9032\u884c offset \u63db\u7b97\u7684\u5de5\u4f5c\uff0c\u9019\u5728 glib \u4e2d\u539f\u672c\u90fd\u662f\u8981\u624b\u5beb\u3002<\/li>\n<\/ol>\n

    \u4e0a\u9762\u9019\u4e9b\u660e\u767d\u4ee5\u5f8c\uff0c\u767c\u73fe\u9084\u662f\u53ef\u80fd\u8981\u5728\u5728 wrapper class \u7684 declare \u524d\u628a\u90a3\u4e9b\u5b58\u9032\u4f86\u7684 class \u7684 declare \u5168\u90e8\u5c0e\u5165\u9032\u4f86\uff0c\u4e0d\u96b1\u79c1\u800c\u53bb\u62d6\u6162\u7de8\u8b6f\u901f\u5ea6\u3002\u7e7c\u7e8c\u554f\u4eba\u4e4b\u5f8c\u767c\u73fe\uff0c\u53ea\u9700\u8981\u5728 wrapper class \u505a customize operator= \u548c desructor \u5373\u53ef\u3002\u53c8\u767c\u73fe\u4e00\u4ef6\u4e8b\u4e0d\u660e\u767d<\/p>\n

      \n
    1. \u5c0d compiler \u7684\u884c\u70ba\u4e0d\u7406\u89e3\uff0c\u7279\u5225\u662f object \u7684\u8655\u7406\u884c\u70ba<\/li>\n<\/ol>\n

      \u7b49\u5225\u4eba\u624b\u628a\u624b\u5beb\u7d66\u6211\u7528\u4f8b\u5f8c\uff0c\u6211\u4e0d\u662f\u5f88\u7406\u89e3\u53cd\u6b63\u5c31\u5148\u958b\u59cb\u7528\u4e86\u3002 \u6211\u4eca\u5929\u5728\u554f\u5982\u4f55\u751f\u6210 instance \u4e26\u52a0\u5165 smart pointer \u5217\u7ba1\u7684\u6642\u5019\uff0c\u5f97\u77e5\u4e86 RVO \u9019\u6a23\u7684\u6771\u897f\uff0c\u800c\u4e0d\u662f\u4fdd\u7559\u5728 C \u7576\u4e2d\u7684\u7fd2\u6163\u4f7f\u7528 pointer<\/p>\n

      \u5728 c++\u5f88\u591a\u6642\u5019\u61c9\u8a72\u4f7f\u7528 by value or by refer \u3002\u9019\u8b93\u6211\u5b8c\u5168\u6df7\u4e82\u4e86\uff0c\u4e0d\u77e5\u9053\u7a76\u7adf pointer \u9084\u6709\u4ec0\u9ebc\u610f\u7fa9\u3002\u672c\u4f86 C \u7576\u4e2d\u6709 pointer \u5b8c\u5168\u662f\u56e0\u70ba performance issue \u3002\u800c c++ compiler \u7adf\u7136\u6703\u77e5\u9053\u5e6b\u4f60\u6539\u6210 pointer copy \u3002<\/p>\n<\/p><\/div>\n

      \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (44<\/span>) <\/div>\n
      <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
        \n
      • \n
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        \u8cc7\u6df1\u5927\u4f6c : luodaoyi <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        \u6211\u4e5f\u662f \u7ecf\u5e38\u5199 windows \u5185\u6838 \u57fa\u672c\u4e0a\u7528\u7684\u4e5f\u5c31\u662f c with class
        \u56de\u8fc7\u5934\u5199 c++\u9879\u76ee stl \u4e0d\u4f1a\u7528\u4e86 …. <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
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        \u8cc7\u6df1\u5927\u4f6c : across <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        \u8fd8\u884c\uff0c\u8fd9\u8fd8\u884c\uff0c\u7136\u540e\u67d0\u4e00\u5929\uff0c\u4f60\u9700\u8981\u5199 JavaScript…… <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
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        \u8cc7\u6df1\u5927\u4f6c : Mohanson <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        \u559c\u6b22 c\uff0c\u5199 c \u7684\u65f6\u5019\u8111\u5b50\u91cc\u80fd\u5b9e\u65f6\u60f3\u8c61\u51fa\u5bf9\u5e94\u7684\u673a\u5668\u7801\u548c\u5185\u5b58\u5e03\u5c40\uff0ccpp \u4e0d\u884c <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
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        \u8cc7\u6df1\u5927\u4f6c : virtuemartx <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        @luodaoyi c with class \u662f\u4ec0\u4e48\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
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        \u8cc7\u6df1\u5927\u4f6c : luodaoyi <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        @virtuemartx \u5927\u6982\u5c31\u662f c++ 98 <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
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        \u8cc7\u6df1\u5927\u4f6c : woncode <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        \u6240\u4ee5 c++\u662f\u4e0d\u662f\u9ad8\u7ea7\u8bed\u8a00\u4e2d\u6700\u590d\u6742\u6700\u6df7\u4e71\u7684\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
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        \u8cc7\u6df1\u5927\u4f6c : fwee <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        \u4e00\u76f4\u8ba4\u4e3a C \u662f\u6700\u597d\u7684\u8bed\u8a00\uff0c\u62bd\u8c61\u5c42\u6b21\u6b63\u597d\u591f\u7528\u3002\u7528\u66f4\u9ad8\u7ea7\u7684\u8bed\u8a00\u5c31\u4f1a\u6709\u5931\u53bb\u638c\u63a7\u611f\u7684\u611f\u89c9\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
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        \u8cc7\u6df1\u5927\u4f6c : wangyzj <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        \u5165\u524d\u7aef\u5751\u5417\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : feast <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        C \u8279\u4e0d\u6298\u78e8\u4eba\u5c82\u4e0d\u662f\u6d6a\u5f97\u865a\u540d\uff1f Object \u578b\u8bed\u8a00\u90fd\u8fd9\u6837\uff0c\u4f60\u9700\u8981\u8f6c\u6362\u4e00\u4e0b\u4f60\u7684\u601d\u8def <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
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        \u8cc7\u6df1\u5927\u4f6c : calmzhu <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        \u591a\u5d29\u5d29\u5c31\u4e60\u60ef\u4e86 <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
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        \u8cc7\u6df1\u5927\u4f6c : aijam <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        \u5efa\u8bae\u770b\u770b the c++ programming language \u7b2c 2\/3\/4 \u7ae0\uff0c\u611f\u89c9 lz \u63d0\u7684\u95ee\u9898\u57fa\u672c\u90fd cover \u4e86\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
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        \u8cc7\u6df1\u5927\u4f6c : ryd994 <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        @virtuemartx \u5c31\u662f\u628a C++\u5f53 C \u7528\u3002\u57fa\u672c\u4e0a\u662f C\uff0c\u5c11\u90e8\u5206\u501f\u7528\u4e00\u4e0b C++\u7684\u6807\u51c6\u7c7b\uff0c\u6bd4\u5982 list\/map \u3002\u57fa\u672c\u4e0d\u5b9a\u4e49\u65b0\u7c7b\uff0c\u4e0d\u5229\u7528 construct \u4e4b\u7c7b\u7684 C++\u7c7b\u7279\u6027\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
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        \u8cc7\u6df1\u5927\u4f6c : billyzs <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        > \u7b2c\u4e00\u662f c++\u5c0d type \u7684\u8981\u6c42\u975e\u5e38\u56b4\u683c\uff0c\u985e\u4f3c\u5728 C \u4e2d void *\u9019\u6a23\u7684\u5132\u5b58\u662f\u7d55\u5c0d\u4e0d\u5141\u8a31\u7684
        compiler \u5c42\u9762\u5e76\u6ca1\u6709\u4e0d\u5141\u8bb8 void*\u5427\uff1f\u6211\u53f8\u5c31\u662f void*\u6ee1\u5929\u98de\u3002\u5f53\u7136\u66f4 idomatic \u7684\u505a\u6cd5\u662f std::any<\/p>\n

        > \u4e5f\u662f\u641e\u4e0d\u61c2\u4e0a\u9762\u8b1b\u7684 template\uff0c\u4e00\u76f4\u4e0d\u61c2\u600e\u9ebc\u5728 wrapper class \u7576\u4e2d\u653e\u4e0b\u90a3\u9ebc\u591a\u578b\u5225\u7684\u8cc7\u6599\uff0c\u5f8c\u4f86\u624d\u767c\u73fe\u9700\u8981\u4f9d\u8cf4\u985e\u4f3c std::variant \u9019\u6a23\u7684\u65b9\u6cd5\u3002
        \u4e2a\u4eba\u89c9\u5f97\u4f7f\u7528 variant \u7684\u4f53\u9a8c\u8fdc\u597d\u4e8e C \u7684 union \u3002\u771f\u7684\u9700\u8981\u7ba1\u7406\u5f88\u591a additive type \u7684\u8bdd compiler \u4e00\u5b9a\u505a\u5f97\u6bd4\u6211\u624b\u52a8\u53bb\u7ba1\u7406\u6765\u7684\u597d
        > ownership \u7684\u63a7\u5236\uff0c\u4ec0\u9ebc\u6642\u5019\u53ef\u4ee5\u7528\u4e00\u4e0b raw pointer \u4e0d\u662f\u4ec0\u9ebc\u5730\u65b9\u90fd\u8981\u5805\u6301\u53ea\u80fd\u7528\u65b0\u7684 smart pointer
        \u5f88\u5c11\u5199 C\uff0c\u597d\u5947 C \u6709\u8fd9\u4e2a\u95ee\u9898\u5417\uff1f CPP core guideline \u5efa\u8bae\u662f\u4e0d\u7528 raw new\/delete\uff0c \u5e76\u6ca1\u8bf4\u4e0d\u80fd\u7528 raw pointer<\/p>\n

        > \u5f97\u77e5\u4e86 RVO \u9019\u6a23\u7684\u6771\u897f <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

      • \n
        \n
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        \u8cc7\u6df1\u5927\u4f6c : billyzs <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        @billyzs
        > \u5f97\u77e5\u4e86 RVO \u9019\u6a23\u7684\u6771\u897f
        \u8fd1 20 \u5e74\u7684 C compiler \u5927\u90e8\u5206\u4e5f\u90fd\u5b9e\u73b0\u4e86 RVO\uff0cC++17 \u4e0d\u8fc7\u662f\u628a NRVO \u5199\u8fdb\u4e86 standard \u3002\u5de6\u503c\u53f3\u503c\u5012\u662f\u771f\u7684\u6709\u70b9\u7ed5 <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
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        \u8cc7\u6df1\u5927\u4f6c : msg7086 <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        \u624d\u5230\u667a\u80fd\u6307\u9488\u8fd9\u4e9b\u5417\uff1f<\/p>\n

        \u518d\u5f80\u540e\u770b\u770b\uff0cC++20 \u90a3\u4e9b\u82b1\u91cc\u80e1\u54e8\u7684\u4e1c\u897f\uff0c\u4f60\u751a\u81f3\u53ef\u4ee5\u628a C++\u4ee3\u7801\u5199\u6210 Python with pointers \u3002 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

      • \n
        \n
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        \u8cc7\u6df1\u5927\u4f6c : Mutoo <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        C++11 \u4e4b\u540e\u53eb modern C++\uff0c\u52a0\u5165\u4e86\u5f88\u591a\u65b0\u7279\u6027\uff0c\u57fa\u672c\u4e0a\u662f\u65b0\u7684\u8bed\u8a00\u4e86\u3002
        \u8fd9\u4e24\u4e2a\u624b\u518c\u53ef\u4ee5\u5e2e\u65b0\u624b\u89e3\u60d1
        https:\/\/github.com\/lefticus\/cppbestpractices
        https:\/\/github.com\/isocpp\/CppCoreGuidelines <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
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        \u8cc7\u6df1\u5927\u4f6c : Cooky <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        \u5b66\u4e0b Python \u653e\u677e\u4e00\u4e0b\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
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        \u8cc7\u6df1\u5927\u4f6c : Mithril <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        C++\u7684\u5957\u8def\u5c31\u662f\u4fdd\u6301\u9759\u6001\u7c7b\u578b\u8bed\u8a00\u7684\u57fa\u7840\u4e0d\u53d8\uff0c\u529f\u80fd\u4e0a\u5c3d\u91cf\u5411\u52a8\u6001\u7c7b\u578b\u8bed\u8a00\u9760\u62e2\uff0c\u4f30\u8ba1\u5927\u4f6c\u4eec\u4e5f\u77e5\u9053\u52a8\u6001\u7c7b\u578b\u624d\u662f\u751f\u4ea7\u529b\u3002
        \u4e0d\u8fc7\u6211\u5df2\u7ecf\u8ddf\u6211\u7684\u4e4b\u4e0a\u59a5\u534f\u4e86\uff0c\u65b0\u6807\u51c6\u5df2\u7ecf\u5543\u4e0d\u52a8\u4e86\uff0c\u53ea\u80fd\u662f C with Class \u8fd9\u6837\u6df7\u65e5\u5b50\u800c\u5df2\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
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        \u8cc7\u6df1\u5927\u4f6c : k9982874 <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        \u5148\u819c\u62dc\u4e00\u4e0b\u7ed9\u5185\u6838\u63d0\u8865\u4e01\u7684\u5927\u4f6c\u3002\u4e00\u5207\u8bbe\u8ba1\u90fd\u662f\u5728\u5e94\u5bf9\u67d0\u79cd\u573a\u666f\uff0c\u4e00\u4f46\u8131\u79bb\u573a\u666f\u90fd\u4f1a\u5f88\u53e6\u7c7b\u3002
        \u4e0d\u5f97\u4e0d\u8bf4\uff0c\u76ee\u524d\u7684\u201c\u73b0\u4ee3\u201d\u7f16\u7a0b\u8bed\u8a00\u90fd\u662f\u5728\u7ed9 C \u6253\u8865\u4e01\uff0c\u5f25\u8865 C \u5728\u5f00\u53d1\u6216\u5de5\u7a0b\u4e0a\u7684\u4e0d\u8db3\uff0c\u5305\u62ec C++\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : levelworm <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        \u770b Effective C++\uff0c\u5c24\u5176\u662f\u7b2c\u4e8c\u7248\uff0c\u4f1a\u6709\u76f8\u5f53\u6536\u83b7\u3002\u5199 C \u51fa\u8eab\u80af\u5b9a\u529f\u5e95\u4e0d\u9519\uff0c\u4e60\u60ef C++\u4e5f\u5c31\u662f\u65f6\u95f4\u95ee\u9898\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : killerirving <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        Go \u624d\u662f\u771f\u6b63\u7684\u201cC++\u201d\uff0cC++\u5e94\u8be5\u6539\u540d C++++++++++++++++\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : shakespark <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        c++\u662f\u771f\u7684\u96be\uff0c\u5404\u79cd\u8bed\u6cd5\u7279\u6027\uff0cc++11 \u53ca\u4ee5\u540e\u5c31\u662f\u4e00\u95e8\u65b0\u7684\u8bed\u8a00 <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : huiyifyj <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        @killerirving @21
        \u4f60\u8fd9\u662f\u653e\u9c7c\u9975\uff0c\u9493\u90a3\u4e9b\u9a82 go \u7684\u4eba\u5427\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
        \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : bitdepth <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        @billyzs
        1. \u516c\u53f8\u5176\u5be6\u5f88\u96a8\u4fbf\uff0c\u56e0\u70ba\u6c92\u4eba\u61c2\u3002\u4f46\u662f\u5728\u6559\u6211\u7684\u5730\u65b9\u9019\u6a23\u5beb\u7d66\u4ed6\u5011\u770b\uff0c\u6703\u88ab\u5e79\u6b7b
        2. \u9019\u908a\u9084\u8981\u642d\u914d std::visit \u624d\u6709\u7528\uff0c\u6709\u9ede\u50bb\u773c
        3. C \u6c92\u6709\u667a\u80fd\u6307\u6a19\uff0c\u8a18\u4f4f\u8981 free \u5c31\u597d\u4e86
        4. \u6628\u5929\u5927\u5bb6\u8a0e\u8ad6\u7d50\u679c\u662f C \u597d\u50cf\u662f\u6c92\u6709 RVO\uff0c\u800c\u4e14 Linux kernel \u76ee\u524d\u9084\u662f\u8981\u6c42 gcc 8 \u80fd\u7de8\u8b6f\u904e\u3002\u9019\u6a23\u5047\u8a2d\u6703\u5728 maillist \u4e2d\u88ab\u5e79\u6b7b\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : cmdOptionKana <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        \u611f\u89c9 C++\u6700\u5927\u7684\u95ee\u9898\u662f\u592a\u7075\u6d3b\u4e86\uff0c\u6bcf\u4e2a\u4eba\u5199\u51fa\u6765\u7684\u98ce\u683c\u90fd\u5f88\u4e0d\u4e00\u6837\u3002\u5f53\u521d Java \u80fd\u5728\u5ba2\u6237\u7aef \/\u4e1a\u52a1\u5e02\u573a\u5168\u9762\u5236\u9738\uff0c\u5176\u4e2d\u4e00\u5927\u539f\u56e0\u53ef\u80fd\u5c31\u662f Java \u6b7b\u677f\uff0c\u5927\u5bb6\u5199\u51fa\u6765\u7684\u98ce\u683c\u90fd\u5dee\u4e0d\u591a\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : zjsxwc <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        c \u8bed\u8a00\u548c\u811a\u672c\u8bed\u8a00\u4e00\u6837\u81ea\u7531\uff0c\u4e00\u4e0b\u5b50\u5207\u6362\u5230\u5f3a\u7c7b\u578b\u65e0 gc \u7684\u73b0\u4ee3 c++\u5f53\u7136\u4e0d\u80fd\u9002\u5e94\uff0c\u9003 <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : InkStone <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        \u6211\u89c9\u5f97\u8fd8\u662f\u6309\u987a\u5e8f\u5b66\u5427\u2026\u2026\u4f60\u4e00\u4e0a\u6765\u5c31\u770b concept \u548c consexpr \u4f1a\u611f\u89c9\u5f88\u5947\u602a\uff0c\u4f46\u5982\u679c\u662f\u4ece c++\u539f\u7248\uff0c11\uff0c17\uff0c20 \u4e00\u8def\u770b\u4e0b\u6765\uff0c\u90a3 concept \u7b80\u76f4\u5c31\u662f\u7406\u6240\u5f53\u7136\u7684\u2026\u2026<\/p>\n

        \u540c\u6837\u7684\uff0cC++\u5f88\u591a\u7279\u6027\u5f97\u4ece C \u91cc\u627e\u6839\u6e90\u3002\u6bd4\u5982\u4f60\u8bf4\u7684 template \u548c macro\uff0cvtable \u7b49\u7b49 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : Chenamy2017 <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        \u4ee5\u524d\u6ca1\u4e86\u89e3\u8fc7 C++\uff0c\u6211\u5012\u662f\u89c9\u5f97\u9700\u8981\u7cfb\u7edf\u7684\u5b66\u4e60\u4e0b\uff0cC \u76f8\u5bf9 C++\u771f\u7684\u662f\u592a\u7b80\u6d01\u4e86\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : paoqi2048 <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        \u5176\u5b9e C++\u7684\u5f88\u591a\u95ee\u9898\u90fd\u662f\u517c\u5bb9 C \u517c\u5bb9\u51fa\u6765\u7684 <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : redme <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        ++c <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : liukrystal <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        \u4e0a\u4e86\u5e74\u7eaa\u5c31\u771f\u7684\u5b66\u4e0d\u52a8 C++\u4e86\uff0c\u81ea 11 \u4e4b\u540e\u57fa\u672c\u4e0a\u5c31\u662f\u4e00\u95e8\u65b0\u8bed\u8a00\u4e86\uff0c\u8d8a\u6765\u8d8a\u50cf\u52a8\u6001\u8bed\u8a00\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : janus77 <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        \u6211\u542c\u8fc7\u4e00\u4e2a\u8bf4\u6cd5\uff1aC++\u5c31\u662f\u56e0\u4e3a\u592a\u81ea\u7531\u4e86\uff0c\u6240\u4ee5\u624d\u53d8\u5f97\u592a\u4e0d\u81ea\u7531\u3002
        \u524d\u8005\u662f\u6307\u8bed\u8a00\u672c\u8eab\uff0c\u540e\u8005\u662f\u56e0\u4e3a\u524d\u8005\u5bfc\u81f4\u5404\u79cd\u4e0d\u53ef\u9884\u671f\u7684\u95ee\u9898\uff0c\u6240\u4ee5\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\u624d\u9700\u8981\u5404\u79cd\u4e25\u683c\u89c4\u5b9a\u4ee5\u4fdd\u8bc1\u9879\u76ee\u7684\u7a33\u6b65\u8fdb\u884c\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : arrayJY <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        constexpr metaprogamming \u6bd4\u7eaf template metaprogramming \u597d\u770b\u591a\u3002<\/p>\n

        \u81f3\u4e8e pointer \u95ee\u9898\uff0c\u8fd9\u5c31\u662f Cpp \u4e3a\u4e86\u517c\u5bb9 C \u800c\u4e0d\u5f97\u4e0d\u7559\u7684\u5751\uff0c\u9664\u975e\u6709 nullptr \u5426\u5219\u6211\u4e00\u5f8b\u5f53 pointer \u4e0d\u5b58\u5728 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : whorusq <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        @woncode \u4e0d\u662f\uff0c\u542c\u8bf4\u5b66\u4e86 rust \u518d\u6765\u641e c++ \u66f4 easy <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : leavic <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        \u4e5d\u8bc4 c++\u4e86\u89e3\u4e00\u4e0b <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : willww64 <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        @luodaoyi \u5199 Windows \u5185\u6838\uff1f\u5fae\u8f6f\u5927\u4f6c v <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : hoyixi <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        \u5f88\u591a\u7f16\u7a0b\u8bed\u8a00\u8fd1 10 \u5e74\u7684\u53d1\u5c55\uff0c\u611f\u89c9\u5c31\u662f\u4e0d\u65ad\u5730\u6316\u5751\u57cb\u81ea\u5df1\u3002
        \u7f1d\u7f1d\u8865\u8865\uff0c\u6316\u4e2a\u5927\u5751\u57cb\u51e0\u4e2a\u5c0f\u5751\uff0c\u6316 10 \u4e2a\u5c0f\u5751\u57cb\u4e00\u4e2a\u5927\u5751\u3002Node\/Javascript \u751f\u6001\u5708\u5c24\u5176\u5178\u578b <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : hejingyuan199 <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        \u54c8\u54c8\uff0c\u63d0\u95ee\u8005\u548c\u5927\u90e8\u5206\u56de\u7b54\u8005\u4e0d\u5728\u4e00\u4e2a\u5c42\u6b21\u4e0a\uff0c\u6240\u4ee5\u770b\u5230\u4e86\u4e00\u4e9b\u7b54\u975e\u6240\u95ee\u3002\u3002\u3002
        \u6211\u89c9\u5f97\u4e3b\u7684\u95ee\u9898\u53ea\u662f\u4e00\u4e9b\u4e2a\u4eba\u5fc3\u5f97\uff0c\u800c\u4e0d\u662f\u63d0\u95ee\u3002\u3002\u3002
        \u4ece\u4e3b\u7684\u95ee\u9898\u91cc\uff0c\u6211\u5b66\u5230\u4e86\u5f88\u591a\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : roundgis <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        @woncode \u6bd4\u4e0d\u4e0a scala \u8907\u96dc <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : c0011 <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        @hoyixi \u4e3b\u8981\u662f\u8003\u8651\u517c\u5bb9\u6027\uff0c\u6211\u5c31\u60f3\u8fd9\u4e2a\u517c\u5bb9\u6027\u4e0d\u80fd\u4e0d\u8003\u8651\u5417\u3002\u3002\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : Wirbelwind <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        3.ownership \u7684\u63a7\u5236\uff0c\u4ec0\u9ebc\u6642\u5019\u53ef\u4ee5\u7528\u4e00\u4e0b raw pointer \u4e0d\u662f\u4ec0\u9ebc\u5730\u65b9\u90fd\u8981\u5805\u6301\u53ea\u80fd\u7528\u65b0\u7684 smart pointer<\/p>\n

        ownership->\u6240\u6709\u6743->\u8ba9 new \u7684\u751f\u547d\u5468\u671f\u548c\u5f53\u524d smart pointer \u53d8\u91cf\u751f\u547d\u5468\u671f\u540c\u6b65<\/p>\n

        smart pointer \u672c\u8eab\u662f\u5c40\u90e8\u53d8\u91cf\u6216\u6210\u5458\u53d8\u91cf\uff0c\u901a\u8fc7\u8fd9\u6837\u7684\u65b9\u5f0f\u4e0d\u9700\u8981\u624b\u52a8 new \u548c delete<\/p>\n

        \u2460\u7a0b\u5e8f\u7c7b\u578b\u7ed3\u6784\u4e0a\u51fa\u73b0\u6709\u5faa\u73af\u5f15\u7528\uff0c\u7ed3\u6784\u4e0b\u7ea7\u4fdd\u7559\u6307\u5411\u4e0a\u7ea7\u7684 weak_ptr \u6216 raw ptr<\/p>\n

        \u2461\u7528\u5230\u4e86 c \u8bed\u8a00\u7684\u5e93\uff0c\u7528 smart pointer \u7ba1\u7406<\/p>\n

        \u2462\u9700\u8981\u7528\u6307\u9488\u8fdb\u884c\u8fd0\u7b97\u7684\u65f6\u5019\uff0c\u53ea\u80fd\u7528 raw pointer<\/p>\n

        4.\u5c0d class destructor \u7684\u8981\u6c42\uff0c\u6211\u4e4b\u524d\u4e0d\u77e5\u9053 C++ compiler \u6703\u5e6b\u5fd9\u586b\u5145 vtable \u548c\u9032\u884c offset \u63db\u7b97\u7684\u5de5\u4f5c\uff0c\u9019\u5728 glib \u4e2d\u539f\u672c\u90fd\u662f\u8981\u624b\u5beb\u3002<\/p>\n

        \u6781\u5176\u4e0d\u5efa\u8bae\u5199\u5e26 virtual \u7684\u4ee3\u7801<\/p>\n

        —————————————<\/p>\n

        \u5c0d compiler \u7684\u884c\u70ba\u4e0d\u7406\u89e3\uff0c\u7279\u5225\u662f object \u7684\u8655\u7406\u884c\u70ba<\/p>\n

        \u5199\u591a\u4e86\u5c31\u719f\u6089\u4e86\uff0cc \u662f c\uff0cc++\u662f c++ <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : impig33 <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        @killerirving <\/p>\n

        c–\u4e0d\u662f\u66f4\u597d <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : tairan2006 <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        \u5144\u5f1f\uff0c\u7528 go <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
        \u8cc7\u6df1\u5927\u4f6c : secondwtq <\/span> <\/div>\n
        <\/i> <\/span> <\/div>\n<\/p><\/div>\n
        \u201c\u7f16\u8bd1\u5668\u884c\u4e3a\u5b66\u662f C++ \u7684\u7279\u8272\uff0c\u4e0d\u80fd\u4e0d\u54c1\u5c1d\u201d <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n","protected":false},"excerpt":{"rendered":"

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