{"id":916,"date":"2011-11-05T00:47:25","date_gmt":"2011-11-04T16:47:25","guid":{"rendered":"http:\/\/learn-house.idv.tw\/?p=916"},"modified":"2020-12-25T12:02:38","modified_gmt":"2020-12-25T04:02:38","slug":"cc%e8%99%9b%e6%93%ac%e5%87%bd%e5%bc%8fvirtual-function%e8%88%87%e6%97%a9%e6%9c%9f%e9%80%a3%e7%b5%90early-binding%e3%80%81%e6%99%9a%e6%9c%9f%e9%80%a3%e7%b5%90late-binding","status":"publish","type":"post","link":"https:\/\/learn-house.idv.tw\/?p=916","title":{"rendered":"[C\/C++]\u865b\u64ec\u51fd\u5f0f(Virtual function)\u8207\u65e9\u671f\u9023\u7d50(Early Binding)\u3001\u665a\u671f\u9023\u7d50(Late Binding)?"},"content":{"rendered":"

\u6700\u8fd1\u5728\u5beb\u6a21\u64ec\u5546\u5e97\u767c\u51fa\u8a0a\u606f\u7684\u91cf\u6e2c\u7a0b\u5f0f\uff0c\u4f7f\u7528JAVA\u4f86\u5bebmulti-thread Socket\u7522\u751f\u591a\u689d\u9023\u7dda<\/p>\n

JAVA\u53ef\u4ee5\u8aaa\u5927\u5b78\u4fee\u5b8c\u8ab2\u5f8c\u56db\u5e74\u5c31\u6c92\u5728\u78b0\uff0c\u90a3\u6642\u4e5f\u53ea\u6703\u5beb\u4e00\u822c\u7684\u6578\u5b78\u904b\u7b97\u4e26\u5c07\u7d50\u679c\u5370\u51fa\u4f86<\/p>\n

\u6240\u4ee5\u53ef\u60f3\u800c\u77e5\uff0c\u6211\u662f\u7528C\/C++\u7684\u89c0\u5ff5\u5728\u5bebJAVA = =\"<\/p>\n

\u5beb\u904eC\u7684\u4eba\uff0c\u61c9\u8a72\u90fd\u6703\u89ba\u5f97\u8981\u7ad9\u5728\u5de8\u4eba\u7684\u80a9\u8180\u4e0a\uff0c\u624d\u80fd\u5beb\u51fa\u597d\u7a0b\u5f0f<\/p>\n

\u610f\u601d\u5c31\u662f\u8aaa\uff0c\u4e0d\u900f\u904e\u5225\u4eba\u73fe\u6210\u5beb\u597d\u7684source code\u4f86\u6539\u7684\u8a71<\/p>\n

\u5225\u8aaa\u8981\u5beb\u597d\u4e00\u500bmulti-thread socket\uff0c\u5149\u55ae\u4e00\u689dsocket\u8981\u5efa\u7acb\u9023\u7dda\u5c31\u6709\u5f97\u641e\u4e86 = =\"<\/p>\n

\u4f46\u9019\u7bc7\u6211\u4e3b\u8981\u662f\u8981\u8b1bC++\u7269\u4ef6\u5c0e\u5411\u88e1\u4e00\u500b\u91cd\u8981\u7684\u89c0\u5ff5<\/p>\n

\u8001\u6a23\u5b50\uff0c\u5148\u96a8\u4fbf\u8209\u500b\u4e4b\u524d\u7684\u4f8b\u5b50<\/p>\n

class\u00a0 Car
\n{
\npublic:
\nvoid CarInfo()
\n{
\nprintf(\"-------------------------\\n\");
\nprintf(\"\u4e00\u822c\u666e\u901a\u623f\u8eca - \u65b0\u6b3e\u8cc7\u8a0a\\n\");
\nprintf(\"-------------------------\\n\");
\n}
\n};<\/p>\n

class Honda : public Car
\n{
\npublic:
\nvoid CarInfo()
\n{
\nprintf(\"-------------------------\\n\");
\nprintf(\"Honda\u623f\u8eca - \u65b0\u6b3e\u8cc7\u8a0a\\n\");
\nprintf(\"-------------------------\\n\");
\n}
\n};<\/p>\n

Honda\u7e7c\u627f\u4e86Car\uff0c\u800c\u4e14\u53c8\u6709\u76f8\u540c\u7684\u51fd\u5f0fCarInfo()<\/p>\n

\u6240\u4ee5\u7236\u985e\u5225\u7684CarInfo()\u6703\u88aboverride<\/p>\n

\u90a3\u9ebc\u5728main\u88e1\u9762\u8f38\u5165\u4e0b\u9762\u7684\u7a0b\u5f0f\u78bc\uff0c\u6703\u5370\u51fa\u4ec0\u9ebc\u7d50\u679c\u5462?<\/p>\n

Car *mycar;
\nmycar = new Honda();
\nmycar->CarInfo();<\/p>\n

\u5c07\u5c07\u5c07!! \u7b54\u6848\u662f\u5370\u51fa<\/p>\n

-------------------------
\n\u4e00\u822c\u666e\u901a\u623f\u8eca - \u65b0\u6b3e\u8cc7\u8a0a
\n-------------------------<\/p>\n

\u70ba\u4ec0\u9ebc\u6703\u662f\u9019\u6a23\u7684\u7d50\u679c\u5462??<\/p>\n

\u56e0\u70ba\u7de8\u8b6f\u5668\u9810\u8a2d\u662f\u65e9\u671f\u9023\u7d50(Early Binding)\uff0c\u5b83\u662f\u4e00\u500b\u5728\u7de8\u8b6f\u6642\u671f<\/strong><\/span>\u5c31\u9700\u6c7a\u5b9a\u7684\u65b9\u5f0f<\/p>\n

\u90a3\u8981\u600e\u9ebc\u624d\u80fd\u4f7f\u7528\u665a\u671f\u9023\u7d50\u5462(Late Binding)\uff0c\u5b83\u662f\u4e00\u500b\u5728\u57f7\u884c\u6642\u671f<\/span><\/strong>\u624d\u6703\u5f97\u77e5\u6240\u8981\u8abf\u7528\u7684\u7269\u4ef6<\/p>\n

\u5176\u5be6\u5f88\u7c21\u55ae\uff0c\u53ea\u8981\u52a0\u5165virtual\u865b\u64ec\u51fd\u5f0f\u5ba3\u544a\u5373\u53ef\uff0c\u5982\u4e0b<\/p>\n

class\u00a0 Car
\n{
\npublic:
\nvirtual<\/strong><\/span> void CarInfo()
\n{
\nprintf(\"-------------------------\\n\");
\nprintf(\"\u4e00\u822c\u666e\u901a\u623f\u8eca - \u65b0\u6b3e\u8cc7\u8a0a\\n\");
\nprintf(\"-------------------------\\n\");
\n}
\n};<\/p>\n

\u9019\u6a23\u5c31\u80fd\u5370\u51fa<\/p>\n

-------------------------
\nHonda\u623f\u8eca - \u65b0\u6b3e\u8cc7\u8a0a
\n-------------------------<\/p>\n

\u9019\u662f\u4e00\u7a2e\u300c\u7de8\u8b6f\u6642\u671f\u300d\u5c31\u9700\u6c7a\u5b9a\u7684\u65b9\u5f0f\uff0c\u9019\u662f\u300c\u65e9\u671f\u7e6b \u7d50\u300d\uff08Early binding\uff09<\/small><\/div>\n","protected":false},"excerpt":{"rendered":"

\u6700\u8fd1\u5728\u5beb\u6a21\u64ec\u5546\u5e97\u767c\u51fa\u8a0a\u606f\u7684\u91cf\u6e2c\u7a0b\u5f0f\uff0c\u4f7f\u7528JAVA\u4f86\u5bebmulti-thread Socket\u7522\u751f\u591a\u689d\u9023\u7dda JAV […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-916","post","type-post","status-publish","format-standard","hentry","category-5"],"_links":{"self":[{"href":"https:\/\/learn-house.idv.tw\/index.php?rest_route=\/wp\/v2\/posts\/916"}],"collection":[{"href":"https:\/\/learn-house.idv.tw\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/learn-house.idv.tw\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/learn-house.idv.tw\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/learn-house.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=916"}],"version-history":[{"count":0,"href":"https:\/\/learn-house.idv.tw\/index.php?rest_route=\/wp\/v2\/posts\/916\/revisions"}],"wp:attachment":[{"href":"https:\/\/learn-house.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=916"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/learn-house.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=916"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/learn-house.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=916"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}