by – \u8d75\u5ca9<\/p>\n
\u5148\u505a\u4e2a\u5e7f\u544a\u7f6e\u5165\uff0c\u5982\u679c\u559c\u6b22\u8fd9\u7bc7\u6587\u7ae0\uff0c\u4f60\u53ef\u4ee5\u5230zhaoyan.website\/blog<\/a> \u53bb\u67e5\u770b\u4e8e\u6b64\u7c7b\u4f3c\u7684C\/C++\u6587\u7ae0\u3002 \u6240\u6709\u5199C++\u7684\u6587\u7ae0\uff0c\u5982\u679c\u6ca1\u6709\u6e90\u4ee3\u7801\u90fd\u662f\u5728\u800d\u6d41\u6c13\u3002\u95f2\u8bdd\u4e0d\u8bf4\uff0c May the source be with you!<\/p>\n https:\/\/gist.github.com\/zhaoyan\/5d39a57e64f2929a95704c6253d35530<\/p>\n \u8fd9\u662f\u4e00\u4e2a\u6559\u79d1\u4e66\u822c\u7ecf\u5178\u7684\u4f8b\u5b50\u3002\u4ecb\u7ecdC++\u7684\u7ee7\u627f\u548c\u591a\u6001\u3002 \u8fd9\u91cc\u552f\u4e00\u9700\u8981\u91cd\u70b9\u5f3a\u8c03\u7684\u662f\uff1a\u5bf9\u51fd\u6570LetAnimalTalk\u548cvector<Animal*> va \u6765\u8bf4\uff0c\u6211\u4eec\u53ef\u4ee5\u60f3\u8c61\u4ed6\u4eec\u662f\u5ba2\u6237\u3002\u901a\u8fc7\u7ee7\u627f\u628a\u53d8\u5316\u5c01\u88c5\u5230\u57fa\u7c7b\u7684\u540e\u9762\uff0c\u8fd9\u6837\u4f7f\u7528\u57fa\u7c7b\u63a5\u53e3\u7684\u5ba2\u6237\u5c31\u4e0d\u9700\u8981\u6539\u52a8\uff01<\/strong> \u5bf9\u5ba2\u6237\u6765\u8bf4\uff0c\u65e0\u8bba\u57fa\u7c7b\u540e\u9762\u600e\u4e48\u53d8\u5316\uff0c\u4f60\u90fd\u5f71\u54cd\u4e0d\u5230\u6211\u3002\u4f8b\u5982\uff0c\u5982\u679c\u73b0\u5728\u6709\u4e00\u4e2a\u7ecf\u7406\u72d7\u52a0\u5165\u4e86\u9879\u76ee\u56e2\u961f\uff0c\u4f60\u7684LetAnimalTalk\u51fd\u6570\u662f\u4e0d\u9700\u8981\u4efb\u4f55\u6539\u53d8\u7684\u3002<\/p>\n So far so good! \u73b0\u5728\u770b\u770b\u5f15\u5165\u6a21\u7248\u540e\uff0c\u53d1\u751f\u4e86\u4ec0\u4e48?<\/p>\n https:\/\/gist.github.com\/zhaoyan\/c5acca04eda622984f2288c06eb7b0a2<\/p>\n \u57fa\u672c\u7684\u5e94\u7528\u573a\u666f\u662f\u8fd9\u6837\u7684\u3002\u5bf9\u4e8eanimal, \u4f60\u53ef\u4ee5\u7528\u5b57\u7b26\u4e32\u6765\u8868\u793a\u4ed6\u7684ID\uff0c \u5982\u679c\u4f60\u60f3developer\u662f\u4e0d\u5e94\u8be5\u4eab\u6709\u5b57\u7b26\u4e32\u540d\u5b57\u7684\uff0c\u90a3\u4e48\u4f60\u4e5f\u53ef\u4ee5\u7528\u6574\u578b\u6570\u6765\u8868\u793a\u4ed6\u7684ID\u3002\u4e0a\u9762\u6574\u4e2a\u7684\u7a0b\u5e8f\uff0c\u5982\u679c\u4f60\u628amain\u4e2d\u6362\u6210\u4e0b\u9762\u7684\u6837\u5b50\uff0c\u9664\u4e86\u732b\u4f1a\u6709\u70b9\u610f\u89c1\uff0c\u5176\u5b83\u4e00\u5207\u90fd\u6ca1\u6709\u95ee\u9898\uff01<\/p>\n https:\/\/gist.github.com\/zhaoyan\/d728d68b5b976d053fa47a310f076768<\/p>\n \u4e0a\u9762\u6a21\u7248\u7ee7\u627f\u7684\u4e00\u4e2a\u6700\u660e\u663e\u7684\u5f0a\u7aef\u662f\u8bed\u6cd5\u53d8\u5f97\u66f4\u52a0\u81c3\u80bf\u548c\u590d\u6742\u4e86\u3002\u4f8b\u5982\uff0c\u4f60\u4e0d\u53ef\u80fd\u5728\u5b50\u7c7b\u4e2d\u76f4\u63a5\u5f15\u7528\u57fa\u7c7b\u7684\u53d8\u91cf\u4e86\u3002\u5982\u679c\u4f60\u5f15\u7528\u4ed6\uff0c\u5fc5\u987b\u4f7f\u7528Animal<T>::id_\u8fd9\u6837\u7684\u8bed\u6cd5\u3002\u80cc\u540e\u7684\u539f\u56e0\u662f\u5f53\u7f16\u8bd1\u5668\u7f16\u8bd1Cat\u7684\u65f6\u5019\uff0cAnimal\u662f\u6839\u672c\u4e0d\u5b58\u5728\u7684\uff01\u5177\u4f53\u7684\u7ec6\u8282\u4f60\u53ef\u4ee5\u770b\u540e\u9762\u7684\u53c2\u8003\u6587\u732e1\u3002<\/p>\n \u53e6\u5916\u7684\u4e00\u4e2a\u95ee\u9898\u5c31\u662f\u865a\u51fd\u6570\u7684\u6548\u7387\u95ee\u9898\u3002\u8fd9\u79cd\u591a\u6001\u662f\u53d1\u751f\u5728\u7a0b\u5e8f\u8fd0\u884c\u7684\u65f6\u5019\uff0c\u4e3b\u8981\u901a\u8fc7\u865a\u51fd\u6570\u8868\u8fdb\u884c\u8c03\u7528\u5206\u53d1\u3002\u6240\u4ee5\u6709\u4e00\u5b9a\u7684\u6548\u7387\u635f\u5931\u3002\u4e0b\u9762\u6211\u4eec\u518d\u770b\u53e6\u5916\u4e00\u4e2a\u4f8b\u5b50\u3002 \u7531\u4e8e\u732b\u4e0d\u559c\u6b22\u6574\u578bID\u7684\u540d\u5b57\uff0c\u6240\u4ee5\u6211\u4eec\u8fd9\u91cc\u5b8c\u5168\u53bb\u6389\u8fd9\u4e2afeature\uff0c\u91cd\u70b9\u5173\u6ce8\u5982\u4f55\u5229\u7528\u6a21\u7248\u5b9e\u73b0\u591a\u6001\u3002 \u8fd9\u6bb5\u4ee3\u7801\u4e2d\uff0c\u6709\u51e0\u70b9\u6ce8\u610f\u4e00\u4e0b\uff1a 2\uff09\u5728\u51fd\u6570LetAnimalTalk\u4e2d\uff0cpa.talk()\u5230\u5e95\u8c03\u7528\u90a3\u4e00\u4e2a talkImplement\u662f\u5728\u7f16\u8bd1\u7684\u65f6\u5019\u5c31\u51b3\u5b9a\u4e86\u3002\u8fd9\u662f\u4e00\u79cd\u9759\u6001\u591a\u6001\u6280\u672f\u3002\u6240\u4ee5\u6ca1\u6709\u6548\u7387\u7684\u635f\u5931\u3002<\/p>\n 3\uff09\u4f46\u662f\u51fd\u6570LetAnimalTalk\u73b0\u5728\u5fc5\u987b\u662f\u6a21\u7248\u51fd\u6570\uff0c\u540c\u65f6\u6211\u4eec\u4e5f\u5931\u53bb\u4e86\u7528vector\u540c\u65f6\u4fdd\u5b58Cat \u548cDeveloper\u7684\u80fd\u529b\u3002\u8fd9\u662f\u6548\u7387\u63d0\u5347\u5e26\u6765\u7684\u7075\u6d3b\u6027\u7684\u635f\u5931\uff01<\/p>\n 4\uff09\u8fd9\u4e2a\u662fCRTP\u6a21\u5f0f\uff0c\u66f4\u591a\u4ecb\u7ecd\u770b\u53c2\u8003\u6587\u732e2\u3002\u7ffb\u8bd1\u8fc7\u6765\u5c31\u662f\u201c\u597d\u5947\u5730\u4e0d\u65ad\u8ffd\u95ee\u81ea\u5df1\uff01\u201d\u8fd9\u5e94\u8be5\u662f\u4e00\u79cd\u7cbe\u795e\u5206\u88c2\u7684\u660e\u663e\u7684\u521d\u671f\u75c7\u72b6\u4e86\u3002<\/p>\n \u76ee\u524d\u4e3a\u6b62\uff0c\u6211\u4eec\u4ecb\u7ecd\u4e86\u4e09\u4e2a\u4f8b\u5b50\u3002\u8fd8\u90fd\u9075\u5faa\u7740\u4e00\u4e2a\u57fa\u672c\u7684IS-A\u7684\u903b\u8f91\u5173\u7cfb\u3002\u4e5f\u5c31\u662f\u8bf4\uff0cCat\u662f\u4e00\u4e2aAnimal\uff0cDeveloper\u4e5f\u662f\u4e00\u4e2aAnimal\u3002\u4e0b\u9762\u4ecb\u7ecd\u4e09\u4e2aIMPLEMENT-BY\u7684\u903b\u8f91\u5173\u7cfb\u3002\u7b2c\u4e00\u4e2a\u4f8b\u5b50\u5b8c\u5168\u6ca1\u6709\u4f7f\u7528\u7ee7\u627f\u3002<\/p>\n https:\/\/gist.github.com\/zhaoyan\/5d6f49d35aada5ff851e79244a5cd6e1<\/p>\n 1) \u8fd9\u6bb5\u7a0b\u5e8f\u4e2d\uff0c\u901a\u8fc7\u6a21\u7248\u53c2\u6570\uff0c\u5728\u7f16\u8bd1\u7684\u65f6\u5019\u5c31\u628a\u4e0d\u540c\u7684talk\u884c\u4e3a\u7684\u5b9e\u73b0\u65b9\u5f0f\u4f20\u9012\u7ed9Animal\u7c7b\u3002\u8fd9\u4e2a\u65b9\u6cd5\u5728STL\u4e2d\u8fd0\u7528\u7684\u76f8\u5f53\u5e7f\u6cdb\u3002\u5177\u4f53\u7684\u4f8b\u5b50\u50cfSTL\u4e2d\u7684map\u7c7b template< 2\uff09\u7531\u4e8e\u5bfc\u5165\u7684\u662f\u67d0\u79cd\u884c\u4e3a\uff0c\u6240\u6709\u518d\u53eb\u505aCat\u5c31\u4e0d\u5408\u9002\u4e86\uff0c\u6240\u4ee5\u8fd9\u91cc\u628a\u7c7b\u7684\u540d\u5b57\u53eb\u505aSayMiao<\/p>\n \u4e3a\u4e86\u5b9e\u73b0IMPLEMENT-BY\u5173\u7cfb\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u4f7f\u7528\u79c1\u6709\u7ee7\u627f\uff1a<\/p>\n https:\/\/gist.github.com\/zhaoyan\/c7c02387f4b0867991ad837ae4fb82e7<\/p>\n 1) \u6709\u6ca1\u6709\u88ab 2)\u8fd9\u79cd\u65b9\u5f0f\u662fParameterised inheritance, \u4e5f\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u8bbe\u8ba1\u6a21\u5f0f\uff0c\u8bf7\u770b\u53c2\u8003\u6587\u732e4<\/p>\n OK\uff0c\u6700\u540e\u7684\u95ee\u9898\u662f\uff0c\u65e2\u7136\u79c1\u6709\u7ee7\u627f\u53ef\u4ee5\uff0c\u5171\u6709\u7ee7\u627f\u884c\u4e0d\u884c\uff1f\u5728\u4e00\u4e2a\u5206\u88c2\u7684\u75c5\u4eba\u773c\u4e2d\uff0c\u6ca1\u5565\u662f\u4e0d\u884c\u7684\uff01<\/p>\n https:\/\/gist.github.com\/zhaoyan\/07a8c0eb8dadd6eb1e3c7372ef2629a8<\/p>\n 1\uff09 \u8fd9\u5c31\u662f\u5728Modern C++ design\u4e2d\u63d0\u5230\u7684Policy-Based design\u3002\u4e00\u4e2a\u5c0f\u63d0\u793a\u662f\uff1a\u73b0\u5728\u5728Animal\u4e2d\u5df2\u7ecf\u4e0d\u9700\u8981talk\u8fd9\u4e2a\u51fd\u6570\u4e86<\/strong>\u3002<\/p>\n \u4e0a\u9762\u6211\u4e00\u5171\u7ed9\u51fa\u4e86\u516d\u4e2a\u7a0b\u5e8f\u3002\u5230 https:\/\/www.onlinegdb.com\/ \u628a\u8fd9\u516d\u6bb5\u4ee3\u7801\u62f7\u8d1d\u8fdb\u53bb\uff0c\u6839\u636e\u81ea\u5df1\u7684\u7406\u89e3\u548c\u95ee\u9898\u4fee\u6539\u4e00\u4e0b\u3002\u201c\u7eb8\u4e0a\u5f97\u6765\u7ec8\u89c9\u6d45\uff0c\u7edd\u77e5\u6b64\u4e8b\u8981\u8fd0\u884c\u201d<\/strong>\u3002 \u8fd9\u5176\u5b9e\u662f\u9646\u6e38\u7ed9\u5e7f\u5927\u7a0b\u5e8f\u733f\u7684\u4e00\u53e5\u5fe0\u544a\u3002 \u5982\u679c\u4f60\u6709\u8db3\u591f\u7684\u8010\u5fc3\uff0c\u4f60\u53ef\u4ee5\u6162\u6162\u5730\u6df1\u5165\u7684\u4f53\u4f1a\uff0c\u8fd9\u91cc\u597d\u73a9\u7684\u4e1c\u897f\u8fd8\u633a\u591a\u7684\u3002\u7531\u4e8e\u7bc7\u7ae0\u5173\u7cfb\uff08\u4e3b\u8981\u662f\u518d\u5c55\u5f00\u6211\u4e5f\u4e0d\u4f1a\u4e86\uff01\uff09\u6211\u5c31\u4e0d\u591a\u8bf4\u4e86\u3002<\/p>\n \u4ee5\u4e0a\u8fd9\u516d\u6bb5\u7a0b\u5e8f\uff0c\u5206\u522b\u4ee3\u8868\u7740\u516d\u79cd\u4e0d\u540c\u7684\u8bed\u6cd5\u65b9\u5f0f\uff0c\u8868\u8fbe\u51fa\u4e24\u79cd\u6700\u57fa\u672c\u7684\u8bbe\u8ba1\u6a21\u5f0f IS\uff0dA\u8fd8\u662fIMPLEMENT\uff0dBY\u3002\u9996\u5148\uff0c\u6ca1\u6709\u4ec0\u4e48\u4f18\u52a3\u4e4b\u5206\uff0c\u5728\u4e0d\u540c\u7684\u573a\u666f\u4e0b\uff0c\u5404\u6709\u4f18\u7f3a\u70b9\u3002\u53e6\u5916\uff0cC++\u7684\u6a21\u7248\u5b8c\u5168\u4e0d\u540c\u4e8e\u4f20\u7edf\u7684C++\u7f16\u7a0b\u3002\u4ed6\u7684\u8bed\u6cd5\u548c\u60f3\u8868\u8fbe\u7684\u8bed\u4e49\u6709\u975e\u5e38\u660e\u663e\u7684\u5206\u88c2\u8d8b\u52bf\uff0c\u975e\u5e38\u5bb9\u6613\u628a\u4f20\u7edf\u7684C++\u7a0b\u5e8f\u733f\u4e5f\u641e\u5206\u88c2\u4e86\u3002\u6b63\u6240\u8c13\u8303\u578b\u662fC++\u6700\u5927\u7684\u5751\uff0c\u4f46\u662f\u4e0d\u8df3\u6b64\u5751\uff0c\u4e0d\u8db3\u4ee5\u8c08\u4eba\u751f\uff01<\/strong><\/p>\n \u5982\u679c\u6ca1\u6709\u770b\u61c2\u5c31\u7b97\u4e86\uff01\u4f60\u5b8c\u5168\u53ef\u4ee5\u8bf4\uff1a\u201c\u8fd9\u4e2a\u4eba\u5df2\u7ecf\u75af\u4e86\uff01\u201d \u8fd9\u4e2a\u6211\u5728\u6807\u9898\u4e2d\u5df2\u7ecf\u627f\u8ba4\u4e86\uff01<\/p>\n \u53c2\u8003\u6587\u732e<\/p>\n 1\uff09https:\/\/eli.thegreenplace.net\/2012\/02\/06\/dependent-name-lookup-for-c-templates<\/p>\n 2\uff09https:\/\/en.wikipedia.org\/wiki\/Curiously_recurring_template_pattern<\/p>\n 3\uff09https:\/\/isocpp.org\/wiki\/faq\/private-inheritance#priv-inherit-vs-compos<\/p>\n 4\uff09https:\/\/blog.feabhas.com\/2014\/06\/template-inheritance\/<\/p>\n","protected":false},"excerpt":{"rendered":" by – \u8d75\u5ca9 \u5148\u505a\u4e2a\u5e7f\u544a\u7f6e\u5165\uff0c\u5982\u679c\u559c\u6b22\u8fd9\u7bc7\u6587\u7ae0\uff0c\u4f60\u53ef\u4ee5\u5230zhaoyan.website\/blog \u53bb\u67e5\u770b\u4e8e\u6b64\u7c7b\u4f3c\u7684C\/C++\u6587\u7ae0\u3002 \u8fd9\u662f\u4e00\u7bc7\u5199\u8f6f\u4ef6\u7684\u6587\u7ae0\uff0c\u4f46\u662f\u5f88\u786c\uff0c\u63d0\u524d\u9884\u8b66\u4e00\u4e0b\uff0c\u5973\u751f\u4e0d\u8981\u770b\uff01 \u6240\u6709\u5199C++\u7684\u6587\u7ae0\uff0c\u5982\u679c\u6ca1\u6709\u6e90\u4ee3\u7801\u90fd\u662f\u5728\u800d\u6d41\u6c13\u3002\u95f2\u8bdd\u4e0d\u8bf4\uff0c May the source be with you! https:\/\/gist.github.com\/zhaoyan\/5d39a57e64f2929a95704c6253d35530 \u8fd9\u662f\u4e00\u4e2a\u6559\u79d1\u4e66\u822c\u7ecf\u5178\u7684\u4f8b\u5b50\u3002\u4ecb\u7ecdC++\u7684\u7ee7\u627f\u548c\u591a\u6001\u3002 \u8fd9\u91cc\u552f\u4e00\u9700\u8981\u91cd\u70b9\u5f3a\u8c03\u7684\u662f\uff1a\u5bf9\u51fd\u6570LetAnimalTalk\u548cvector<Animal*> va \u6765\u8bf4\uff0c\u6211\u4eec\u53ef\u4ee5\u60f3\u8c61\u4ed6\u4eec\u662f\u5ba2\u6237\u3002\u901a\u8fc7\u7ee7\u627f\u628a\u53d8\u5316\u5c01\u88c5\u5230\u57fa\u7c7b\u7684\u540e\u9762\uff0c\u8fd9\u6837\u4f7f\u7528\u57fa\u7c7b\u63a5\u53e3\u7684\u5ba2\u6237\u5c31\u4e0d\u9700\u8981\u6539\u52a8\uff01 \u5bf9\u5ba2\u6237\u6765\u8bf4\uff0c\u65e0\u8bba\u57fa\u7c7b\u540e\u9762\u600e\u4e48\u53d8\u5316\uff0c\u4f60\u90fd\u5f71\u54cd\u4e0d\u5230\u6211\u3002\u4f8b\u5982\uff0c\u5982\u679c\u73b0\u5728\u6709\u4e00\u4e2a\u7ecf\u7406\u72d7\u52a0\u5165\u4e86\u9879\u76ee\u56e2\u961f\uff0c\u4f60\u7684LetAnimalTalk\u51fd\u6570\u662f\u4e0d\u9700\u8981\u4efb\u4f55\u6539\u53d8\u7684\u3002 So far so good! \u73b0\u5728\u770b\u770b\u5f15\u5165\u6a21\u7248\u540e\uff0c\u53d1\u751f\u4e86\u4ec0\u4e48? https:\/\/gist.github.com\/zhaoyan\/c5acca04eda622984f2288c06eb7b0a2 \u57fa\u672c\u7684\u5e94\u7528\u573a\u666f\u662f\u8fd9\u6837\u7684\u3002\u5bf9\u4e8eanimal, \u4f60\u53ef\u4ee5\u7528\u5b57\u7b26\u4e32\u6765\u8868\u793a\u4ed6\u7684ID\uff0c \u5982\u679c\u4f60\u60f3developer\u662f\u4e0d\u5e94\u8be5\u4eab\u6709\u5b57\u7b26\u4e32\u540d\u5b57\u7684\uff0c\u90a3\u4e48\u4f60\u4e5f\u53ef\u4ee5\u7528\u6574\u578b\u6570\u6765\u8868\u793a\u4ed6\u7684ID\u3002\u4e0a\u9762\u6574\u4e2a\u7684\u7a0b\u5e8f\uff0c\u5982\u679c\u4f60\u628amain\u4e2d\u6362\u6210\u4e0b\u9762\u7684\u6837\u5b50\uff0c\u9664\u4e86\u732b\u4f1a\u6709\u70b9\u610f\u89c1\uff0c\u5176\u5b83\u4e00\u5207\u90fd\u6ca1\u6709\u95ee\u9898\uff01 https:\/\/gist.github.com\/zhaoyan\/d728d68b5b976d053fa47a310f076768 \u4e0a\u9762\u6a21\u7248\u7ee7\u627f\u7684\u4e00\u4e2a\u6700\u660e\u663e\u7684\u5f0a\u7aef\u662f\u8bed\u6cd5\u53d8\u5f97\u66f4\u52a0\u81c3\u80bf\u548c\u590d\u6742\u4e86\u3002\u4f8b\u5982\uff0c\u4f60\u4e0d\u53ef\u80fd\u5728\u5b50\u7c7b\u4e2d\u76f4\u63a5\u5f15\u7528\u57fa\u7c7b\u7684\u53d8\u91cf\u4e86\u3002\u5982\u679c\u4f60\u5f15\u7528\u4ed6\uff0c\u5fc5\u987b\u4f7f\u7528Animal<T>::id_\u8fd9\u6837\u7684\u8bed\u6cd5\u3002\u80cc\u540e\u7684\u539f\u56e0\u662f\u5f53\u7f16\u8bd1\u5668\u7f16\u8bd1Cat\u7684\u65f6\u5019\uff0cAnimal\u662f\u6839\u672c\u4e0d\u5b58\u5728\u7684\uff01\u5177\u4f53\u7684\u7ec6\u8282\u4f60\u53ef\u4ee5\u770b\u540e\u9762\u7684\u53c2\u8003\u6587\u732e1\u3002 \u53e6\u5916\u7684\u4e00\u4e2a\u95ee\u9898\u5c31\u662f\u865a\u51fd\u6570\u7684\u6548\u7387\u95ee\u9898\u3002\u8fd9\u79cd\u591a\u6001\u662f\u53d1\u751f\u5728\u7a0b\u5e8f\u8fd0\u884c\u7684\u65f6\u5019\uff0c\u4e3b\u8981\u901a\u8fc7\u865a\u51fd\u6570\u8868\u8fdb\u884c\u8c03\u7528\u5206\u53d1\u3002\u6240\u4ee5\u6709\u4e00\u5b9a\u7684\u6548\u7387\u635f\u5931\u3002\u4e0b\u9762\u6211\u4eec\u518d\u770b\u53e6\u5916\u4e00\u4e2a\u4f8b\u5b50\u3002 \u7531\u4e8e\u732b\u4e0d\u559c\u6b22\u6574\u578bID\u7684\u540d\u5b57\uff0c\u6240\u4ee5\u6211\u4eec\u8fd9\u91cc\u5b8c\u5168\u53bb\u6389\u8fd9\u4e2afeature\uff0c\u91cd\u70b9\u5173\u6ce8\u5982\u4f55\u5229\u7528\u6a21\u7248\u5b9e\u73b0\u591a\u6001\u3002 https:\/\/gist.github.com\/zhaoyan\/c429cb015c556ad23a103a2068540fa6 \u8fd9\u6bb5\u4ee3\u7801\u4e2d\uff0c\u6709\u51e0\u70b9\u6ce8\u610f\u4e00\u4e0b\uff1a 1\uff09 \u591a\u6001\u5df2\u7ecf\u4e0d\u9700\u8981\u7528\u6307\u9488\u4e86\uff0c\u6211\u4eec\u53ef\u4ee5\u7528\u5f15\u7528\u6765\u652f\u6301\u591a\u6001\u3002 2\uff09\u5728\u51fd\u6570LetAnimalTalk\u4e2d\uff0cpa.talk()\u5230\u5e95\u8c03\u7528\u90a3\u4e00\u4e2a talkImplement\u662f\u5728\u7f16\u8bd1\u7684\u65f6\u5019\u5c31\u51b3\u5b9a\u4e86\u3002\u8fd9\u662f\u4e00\u79cd\u9759\u6001\u591a\u6001\u6280\u672f\u3002\u6240\u4ee5\u6ca1\u6709\u6548\u7387\u7684\u635f\u5931\u3002 3\uff09\u4f46\u662f\u51fd\u6570LetAnimalTalk\u73b0\u5728\u5fc5\u987b\u662f\u6a21\u7248\u51fd\u6570\uff0c\u540c\u65f6\u6211\u4eec\u4e5f\u5931\u53bb\u4e86\u7528vector\u540c\u65f6\u4fdd\u5b58Cat \u548cDeveloper\u7684\u80fd\u529b\u3002\u8fd9\u662f\u6548\u7387\u63d0\u5347\u5e26\u6765\u7684\u7075\u6d3b\u6027\u7684\u635f\u5931\uff01 4\uff09\u8fd9\u4e2a\u662fCRTP\u6a21\u5f0f\uff0c\u66f4\u591a\u4ecb\u7ecd\u770b\u53c2\u8003\u6587\u732e2\u3002\u7ffb\u8bd1\u8fc7\u6765\u5c31\u662f\u201c\u597d\u5947\u5730\u4e0d\u65ad\u8ffd\u95ee\u81ea\u5df1\uff01\u201d\u8fd9\u5e94\u8be5\u662f\u4e00\u79cd\u7cbe\u795e\u5206\u88c2\u7684\u660e\u663e\u7684\u521d\u671f\u75c7\u72b6\u4e86\u3002 \u76ee\u524d\u4e3a\u6b62\uff0c\u6211\u4eec\u4ecb\u7ecd\u4e86\u4e09\u4e2a\u4f8b\u5b50\u3002\u8fd8\u90fd\u9075\u5faa\u7740\u4e00\u4e2a\u57fa\u672c\u7684IS-A\u7684\u903b\u8f91\u5173\u7cfb\u3002\u4e5f\u5c31\u662f\u8bf4\uff0cCat\u662f\u4e00\u4e2aAnimal\uff0cDeveloper\u4e5f\u662f\u4e00\u4e2aAnimal\u3002\u4e0b\u9762\u4ecb\u7ecd\u4e09\u4e2aIMPLEMENT-BY\u7684\u903b\u8f91\u5173\u7cfb\u3002\u7b2c\u4e00\u4e2a\u4f8b\u5b50\u5b8c\u5168\u6ca1\u6709\u4f7f\u7528\u7ee7\u627f\u3002 https:\/\/gist.github.com\/zhaoyan\/5d6f49d35aada5ff851e79244a5cd6e1 1) \u8fd9\u6bb5\u7a0b\u5e8f\u4e2d\uff0c\u901a\u8fc7\u6a21\u7248\u53c2\u6570\uff0c\u5728\u7f16\u8bd1\u7684\u65f6\u5019\u5c31\u628a\u4e0d\u540c\u7684talk\u884c\u4e3a\u7684\u5b9e\u73b0\u65b9\u5f0f\u4f20\u9012\u7ed9Animal\u7c7b\u3002\u8fd9\u4e2a\u65b9\u6cd5\u5728STL\u4e2d\u8fd0\u7528\u7684\u76f8\u5f53\u5e7f\u6cdb\u3002\u5177\u4f53\u7684\u4f8b\u5b50\u50cfSTL\u4e2d\u7684map\u7c7b template< class\u00a0Key,\u2028\u00a0 \u00a0\u00a0class\u00a0T,\u2028\u00a0 \u00a0\u00a0class\u00a0Compare\u00a0=\u00a0std::less,\u2028\u00a0 \u00a0\u00a0class\u00a0Allocator\u00a0=\u00a0std::allocator<std::pair\u00a0> >\u00a0class\u00a0map \u5176\u4e2d\uff0c std::less\u5c31\u7c7b\u4f3c\u4e8e\u6211\u4eec\u4e0a\u9762\u7684SayMiao\u3002 2\uff09\u7531\u4e8e\u5bfc\u5165\u7684\u662f\u67d0\u79cd\u884c\u4e3a\uff0c\u6240\u6709\u518d\u53eb\u505aCat\u5c31\u4e0d\u5408\u9002\u4e86\uff0c\u6240\u4ee5\u8fd9\u91cc\u628a\u7c7b\u7684\u540d\u5b57\u53eb\u505aSayMiao \u4e3a\u4e86\u5b9e\u73b0IMPLEMENT-BY\u5173\u7cfb\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u4f7f\u7528\u79c1\u6709\u7ee7\u627f\uff1a … Continue reading “C++\u6a21\u7248\u4ece\u7cbe\u901a\u5230\u7cbe\u795e\u5206\u88c2”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,1],"tags":[],"class_list":["post-210","post","type-post","status-publish","format-standard","hentry","category-cc","category-uncategorized"],"_links":{"self":[{"href":"http:\/\/zhaoyan.website\/blog\/index.php\/wp-json\/wp\/v2\/posts\/210","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/zhaoyan.website\/blog\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/zhaoyan.website\/blog\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/zhaoyan.website\/blog\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/zhaoyan.website\/blog\/index.php\/wp-json\/wp\/v2\/comments?post=210"}],"version-history":[{"count":27,"href":"http:\/\/zhaoyan.website\/blog\/index.php\/wp-json\/wp\/v2\/posts\/210\/revisions"}],"predecessor-version":[{"id":242,"href":"http:\/\/zhaoyan.website\/blog\/index.php\/wp-json\/wp\/v2\/posts\/210\/revisions\/242"}],"wp:attachment":[{"href":"http:\/\/zhaoyan.website\/blog\/index.php\/wp-json\/wp\/v2\/media?parent=210"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/zhaoyan.website\/blog\/index.php\/wp-json\/wp\/v2\/categories?post=210"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/zhaoyan.website\/blog\/index.php\/wp-json\/wp\/v2\/tags?post=210"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n\u8fd9\u662f\u4e00\u7bc7\u5199\u8f6f\u4ef6\u7684\u6587\u7ae0\uff0c\u4f46\u662f\u5f88\u786c\uff0c\u63d0\u524d\u9884\u8b66\u4e00\u4e0b\uff0c\u5973\u751f\u4e0d\u8981\u770b\uff01<\/p>\n
\nhttps:\/\/gist.github.com\/zhaoyan\/c429cb015c556ad23a103a2068540fa6<\/p>\n
\n1\uff09 \u591a\u6001\u5df2\u7ecf\u4e0d\u9700\u8981\u7528\u6307\u9488\u4e86\uff0c\u6211\u4eec\u53ef\u4ee5\u7528\u5f15\u7528\u6765\u652f\u6301\u591a\u6001\u3002<\/p>\n
\nclass\u00a0Key,\u2028\u00a0 \u00a0\u00a0class\u00a0T,\u2028\u00a0 \u00a0\u00a0class\u00a0Compare\u00a0=\u00a0std::less,\u2028\u00a0 \u00a0\u00a0class\u00a0Allocator\u00a0=\u00a0std::allocator<std::pair\u00a0>
\n>\u00a0class\u00a0map
\n\u5176\u4e2d\uff0c std::less\u5c31\u7c7b\u4f3c\u4e8e\u6211\u4eec\u4e0a\u9762\u7684SayMiao\u3002<\/p>\n
\ntemplate< typename T>
\nclass Animal: private T{
\n\u8fd9\u6837\u7684\u8bed\u6cd5\u60ca\u5230\uff01\u6ca1\u5173\u7cfb\uff0c\u6211\u4eec\u6162\u6162\u6765\u3002\u9996\u5148\u79c1\u6709\u7ee7\u627f\u4e0d\u662fIS\uff0dA\u7684\u5173\u7cfb\u3002\u800c\u662fIMPLEMENT-BY\u7684\u5173\u7cfb\u3002\u5173\u4e8e\u4ec0\u4e48\u65f6\u5019\u4f7f\u7528\u79c1\u6709\u7ee7\u627f\uff0c\u4ec0\u4e48\u65f6\u5019\u4f7f\u7528\u7ec4\u5408(composition)
\n\u3002\u8bf7\u770b\u53c2\u8003\u6587\u732e3\u3002<\/p>\n