{"id":2436,"date":"2017-03-13T20:31:22","date_gmt":"2017-03-13T12:31:22","guid":{"rendered":"https:\/\/boweihe.me\/?p=2436"},"modified":"2017-03-13T20:31:22","modified_gmt":"2017-03-13T12:31:22","slug":"c11-%e7%bb%a7%e6%89%bf%e6%9e%84%e9%80%a0%e5%87%bd%e6%95%b0%e3%80%81%e5%a7%94%e6%b4%be%e6%9e%84%e9%80%a0%e5%87%bd%e6%95%b0","status":"publish","type":"post","link":"https:\/\/dayandcarrot.space\/?p=2436","title":{"rendered":"C++11 \u7ee7\u627f\u6784\u9020\u51fd\u6570\u3001\u59d4\u6d3e\u6784\u9020\u51fd\u6570"},"content":{"rendered":"

C++11\u6807\u51c6\u4e2d\u5f15\u5165\u4e86\u4e24\u79cd\u6784\u9020\u51fd\u6570\u7684\u6d3b\u7528\u65b9\u6cd5\uff0c\u53ef\u4ee5\u9002\u5f53\u5730\u51cf\u8f7b\u4e00\u4e9b\u60c5\u666f\u4e0b\u7684\u7801\u5b57\u8d1f\u62c5\u3002<\/p>\n

1.\u7ee7\u627f\u6784\u9020\u51fd\u6570<\/h4>\n

\u4ee5\u5f80\u60c5\u51b5\u4e0b\uff0c\u5728\u6d3e\u751f\u7c7b\u4e2d\u8c03\u7528\u57fa\u7c7b\u7684\u6784\u9020\u51fd\u6570\uff0c\u4e00\u822c\u9700\u8981\u5728\u6d3e\u751f\u7c7b\u4e2d\u663e\u5f0f\u8c03\u7528\uff1a<\/p>\n

struct A\n{\n    A(int i) {}\n};\nstruct B\n{\n    B(int i) : A(i) {}\n};<\/pre>\n
\u5f53\u6784\u9020\u51fd\u6570\u7684\u82b1\u5f0f(\u7b7e\u540d)\u5f88\u591a\u7684\u65f6\u5019\uff0c\u7ee7\u627f\u7c7b\u5199\u8d77\u6765\u5c31\u6bd4\u8f83\u8f9b\u82e6\u4e86\u3002
\n\u5728C++11\u6807\u51c6\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7using\u58f0\u660e\u6765\u7b80\u5316\u8fd9\u79cd\u64cd\u4f5c\uff08using\u58f0\u660e\u5728\u4ee5\u524d\u7684\u6807\u51c6\u4e2d\u5df2\u7ecf\u53ef\u4ee5\u7528\u5728\u975e\u6784\u9020\u51fd\u6570\u91cc\uff09<\/p>\n
struct A\n{\n    A(int i) {}\n    A(double d, int i) {}\n    A(float f, double d, int i) {}\n    \/\/...\n};\nstruct B\n{\n    using A::A;    \/\/\u7ee7\u627f\u6784\u9020\u51fd\u6570\n    \/\/...\n};<\/pre>\n
\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u91c7\u7528\u8fd9\u79cdusing\u58f0\u660e\u6709\u4e24\u4e2a\u89c4\u77e9\uff1a<\/p>\n
    \n
  • \u5982\u679c\u57fa\u7c7b\u7684\u6784\u9020\u51fd\u6570\u662fprivate\u6216\u662f\u6d3e\u751f\u7c7b\u662f\u4ece\u57fa\u7c7b\u4e2d\u865a\u7ee7\u627f\u7684\uff0c\u4e0d\u80fd\u7528\u8fd9\u79cd\u65b9\u6cd5;<\/li>\n
  • \u4e00\u65e6\u7528\u4e86\u7ee7\u627f\u6784\u9020\u51fd\u6570\uff0c\u7f16\u8bd1\u5668\u5c31\u4e0d\u4f1a\u4e3a\u6d3e\u751f\u7c7b\u751f\u6210\u9ed8\u8ba4\u6784\u9020\u51fd\u6570(Visual Studio\u62a5error C2280)\uff0c\u9664\u975e\u57fa\u7c7b\u81ea\u5df1\u6ca1\u6709\u5b9a\u4e49\u4efb\u4f55\u6784\u9020\u51fd\u6570\u800c\u89e6\u53d1\u4e86\u9ed8\u8ba4\u6784\u9020\u51fd\u6570\u751f\u6210;<\/li>\n<\/ul>\n
    2.\u59d4\u6d3e\u6784\u9020\u51fd\u6570<\/h4>\n
    \u59d4\u6d3e\u6784\u9020\u51fd\u6570\u5e38\u7528\u5728\u51cf\u5c11\u521d\u59cb\u5316\u8fc7\u7a0b\u7684\u4ee3\u7801\u5197\u4f59\u95ee\u9898\uff0c\u6bd4\u5982\u4e0b\u9762\u8fd9\u4e2a\u7ecf\u5178\u4f8b\u5b50\uff08\u6211\u5c31\u8fd9\u4e48\u5e72\u8fc7\uff09\uff1a<\/p>\n
    class Info\n{\npublic:\n    Info() { InitRest(); }\n    Info(int i) : type(i) { InitRest(); }\n    Info(char c) : name(c) { InitRest();}\nprivate:\n    void InitRest ()\n    {\n        \/\/ \u521d\u59cb\u5316\u5176\u4ed6\u4e1c\u897f\n    }\n    int type {1};\n    char name {'a'};\n    \/\/...\n};<\/pre>\n
    \u4f7f\u7528\u4e00\u822c\u65b9\u6cd5\uff0c\u6211\u4eec\u65e0\u6cd5\u5728\u81ea\u5df1\u6784\u9020\u51fd\u6570\u91cc\u53c8\u8c03\u7528\u81ea\u5df1\u7684\u6784\u9020\u51fd\u6570(\u7a81\u7136\u60f3\u8d77\u4e86python\u7684import this\uff0c\u54c8\u54c8)\uff0c\u7eb5\u4f7f\u51fd\u6570\u7b7e\u540d\u4e0d\u540c\u4e5f\u4f1a\u62a5\u7f16\u8bd1\u9519\u8bef\u3002
    \nC++11\u4e2d\uff0c\u53ef\u4ee5\u8fd9\u4e48\u5199\uff1a<\/p>\n
    class Info\n{\npublic:\n    Info() { InitRest(); }\n    Info(int i) : Info() { type = i; }\n    Info(char c) : Info() { name = c; }\nprivate:\n    void InitRest ()\n    {\n        \/\/ \u521d\u59cb\u5316\u5176\u4ed6\u4e1c\u897f\n    }\n    int type {1};\n    char name {'a'};\n    \/\/...\n};<\/pre>\n
    \u4f46\u662f\u8981\u6ce8\u610f\uff0c\u59d4\u6d3e\u6784\u9020\u51fd\u6570\u4e0d\u80fd\u548c\u521d\u59cb\u5316\u5217\u8868\u5e76\u7528\uff0c\u4e0d\u7136\u4f9d\u65e7\u7f16\u8bd1\u9519\u8bef\u3002
    \n\u6bd4\u5982\u6211\u4eec\u4e0d\u80fd\u641eInfo(int i) : Info(), type(i) { }<\/span>\u00a0\u3002
    \n\u4e0d\u8fc7\u6709\u89e3\u51b3\u529e\u6cd5\uff0c\u6bd4\u5982\u53ef\u4ee5\u58f0\u660e\u4e00\u4e2a\u79c1\u6709\u7684\u6784\u9020\u51fd\u6570\uff0c\u5b83\u5305\u62ec\u201c\u5b8c\u6574\u201d\u7684\u53c2\u6570\u8f93\u5165\uff0c\u7136\u540e\u516c\u6709\u7684\u5176\u4ed6\u6784\u9020\u51fd\u6570\u8c03\u7528\u5b83\uff1a<\/p>\n
    class Info\n{\npublic:\n    Info() : Info(1, 'a') { } \/\/ \u6216\u91c7\u7528\u94fe\u72b6\u59d4\u6d3e\uff1a Info(1) \u6216 Info('a')\n    Info(int i) : Info(i, 'a') { }\n    Info(char c) : Info(1, c) { }\nprivate:\n    Info(int i, char e) : type(i), name(c) { }\n    int type {1};\n    char name {'a'};\n    \/\/...\n};<\/pre>\n
    \u5173\u4e8e\u51fd\u6570\u6267\u884c\u987a\u5e8f\uff0c\u76ee\u6807\u51fd\u6570\u6267\u884c\u603b\u662f\u5148\u4e8e\u59d4\u6d3e\u6784\u9020\u51fd\u6570\u7684\u3002<\/p>\n
    \u53c2\u8003\u6587\u732e<\/h4>\n
    \u300a\u6df1\u5165\u7406\u89e3C++11 \uff08C++11\u65b0\u7279\u6027\u89e3\u6790\u4e0e\u5e94\u7528\uff09\u300b<\/p>\n","protected":false},"excerpt":{"rendered":"
    C++11\u6807\u51c6\u4e2d\u5f15\u5165\u4e86\u4e24\u79cd\u6784\u9020\u51fd\u6570\u7684\u6d3b\u7528\u65b9\u6cd5\uff0c\u53ef\u4ee5\u9002\u5f53\u5730\u51cf\u8f7b\u4e00\u4e9b\u60c5\u666f\u4e0b\u7684\u7801\u5b57\u8d1f\u62c5\u3002 1.\u7ee7\u627f\u6784\u9020\u51fd\u6570 \u4ee5\u5f80\u60c5\u51b5\u4e0b\uff0c\u5728\u6d3e\u751f\u7c7b\u4e2d\u8c03\u7528\u57fa\u7c7b\u7684\u6784\u9020\u51fd\u6570\uff0c\u4e00\u822c\u9700\u8981\u5728\u6d3e\u751f\u7c7b\u4e2d\u663e\u5f0f\u8c03\u7528\uff1a struct A { A(int i) {} }; struct B { B(int i) : A(i) {} }; \u5f53\u6784\u9020\u51fd\u6570\u7684\u82b1\u5f0f(\u7b7e\u540d)\u5f88\u591a\u7684\u65f6\u5019\uff0c\u7ee7\u627f\u7c7b\u5199\u8d77\u6765\u5c31\u6bd4\u8f83\u8f9b\u82e6\u4e86\u3002 \u5728C++11\u6807\u51c6\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7using\u58f0\u660e\u6765\u7b80\u5316\u8fd9\u79cd\u64cd\u4f5c\uff08using\u58f0\u660e\u5728\u4ee5\u524d\u7684\u6807\u51c6\u4e2d\u5df2\u7ecf\u53ef\u4ee5\u7528\u5728\u975e\u6784\u9020\u51fd\u6570\u91cc\uff09 struct A { A(int i) {} A(double d, int i) {} A(float f, double d, int i) {} \/\/… }; struct B { using A::A; \/\/\u7ee7\u627f\u6784\u9020\u51fd\u6570 \/\/… }; \u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u91c7\u7528\u8fd9\u79cdusing\u58f0\u660e\u6709\u4e24\u4e2a\u89c4\u77e9\uff1a \u5982\u679c\u57fa\u7c7b\u7684\u6784\u9020\u51fd\u6570\u662fprivate\u6216\u662f\u6d3e\u751f\u7c7b\u662f\u4ece\u57fa\u7c7b\u4e2d\u865a\u7ee7\u627f\u7684\uff0c\u4e0d\u80fd\u7528\u8fd9\u79cd\u65b9\u6cd5; \u4e00\u65e6\u7528\u4e86\u7ee7\u627f\u6784\u9020\u51fd\u6570\uff0c\u7f16\u8bd1\u5668\u5c31\u4e0d\u4f1a\u4e3a\u6d3e\u751f\u7c7b\u751f\u6210\u9ed8\u8ba4\u6784\u9020\u51fd\u6570(Visual Studio\u62a5error C2280)\uff0c\u9664\u975e\u57fa\u7c7b\u81ea\u5df1\u6ca1\u6709\u5b9a\u4e49\u4efb\u4f55\u6784\u9020\u51fd\u6570\u800c\u89e6\u53d1\u4e86\u9ed8\u8ba4\u6784\u9020\u51fd\u6570\u751f\u6210; 2.\u59d4\u6d3e\u6784\u9020\u51fd\u6570 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[28],"class_list":["post-2436","post","type-post","status-publish","format-standard","hentry","category-study","tag-c"],"_links":{"self":[{"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=\/wp\/v2\/posts\/2436","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2436"}],"version-history":[{"count":0,"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=\/wp\/v2\/posts\/2436\/revisions"}],"wp:attachment":[{"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2436"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2436"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2436"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}