{"id":57752,"date":"2024-10-10T20:51:53","date_gmt":"2024-10-10T12:51:53","guid":{"rendered":"https:\/\/server.hk\/cnblog\/57752\/"},"modified":"2024-10-10T20:51:53","modified_gmt":"2024-10-10T12:51:53","slug":"go%e6%95%99%e7%a8%8b-go-%e8%aa%9e%e8%a8%80%e6%8e%a5%e5%8f%a3%e5%92%8c%e9%a1%9e%e5%9e%8b%e4%b9%8b%e9%96%93%e7%9a%84%e8%bd%89%e6%8f%9b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/57752\/","title":{"rendered":"GO\u6559\u7a0b: Go \u8a9e\u8a00\u63a5\u53e3\u548c\u985e\u578b\u4e4b\u9593\u7684\u8f49\u63db"},"content":{"rendered":"

GO\u6559\u7a0b: Go \u8a9e\u8a00\u63a5\u53e3\u548c\u985e\u578b\u4e4b\u9593\u7684\u8f49\u63db<\/h1>\n

Go \u8a9e\u8a00\uff08\u53c8\u7a31 Golang\uff09\u662f\u4e00\u7a2e\u975c\u614b\u985e\u578b\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u56e0\u5176\u7c21\u6f54\u6027\u548c\u9ad8\u6548\u6027\u800c\u53d7\u5230\u5ee3\u6cdb\u6b61\u8fce\u3002\u5728 Go \u8a9e\u8a00\u4e2d\uff0c\u63a5\u53e3\uff08interface\uff09\u548c\u985e\u578b\uff08type\uff09\u4e4b\u9593\u7684\u8f49\u63db\u662f\u4e00\u500b\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u7406\u89e3\u9019\u4e00\u9ede\u5c0d\u65bc\u958b\u767c\u9ad8\u6548\u7684 Go \u61c9\u7528\u7a0b\u5e8f\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e Go \u8a9e\u8a00\u4e2d\u63a5\u53e3\u548c\u985e\u578b\u4e4b\u9593\u7684\u8f49\u63db\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n

\u63a5\u53e3\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n

\u5728 Go \u8a9e\u8a00\u4e2d\uff0c\u63a5\u53e3\u662f\u4e00\u7d44\u65b9\u6cd5\u7684\u96c6\u5408\u3002\u4efb\u4f55\u985e\u578b\u53ea\u8981\u5be6\u73fe\u4e86\u63a5\u53e3\u4e2d\u5b9a\u7fa9\u7684\u6240\u6709\u65b9\u6cd5\uff0c\u5c31\u53ef\u4ee5\u88ab\u8996\u70ba\u8a72\u63a5\u53e3\u7684\u5be6\u4f8b\u3002\u9019\u4f7f\u5f97\u63a5\u53e3\u6210\u70ba\u4e00\u7a2e\u5f37\u5927\u7684\u62bd\u8c61\u5de5\u5177\uff0c\u80fd\u5920\u4fc3\u9032\u4e0d\u540c\u985e\u578b\u4e4b\u9593\u7684\u4e92\u64cd\u4f5c\u6027\u3002<\/p>\n

\u5b9a\u7fa9\u63a5\u53e3<\/h3>\n
type Animal interface {\n    Speak() string\n}\n<\/code><\/pre>\n
\u5728\u4e0a\u9762\u7684\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b\u540d\u70ba Animal<\/code> \u7684\u63a5\u53e3\uff0c\u8a72\u63a5\u53e3\u8981\u6c42\u5be6\u73fe\u8005\u5fc5\u9808\u63d0\u4f9b\u4e00\u500b Speak<\/code> \u65b9\u6cd5\uff0c\u8fd4\u56de\u4e00\u500b\u5b57\u7b26\u4e32\u3002<\/p>\n
\u985e\u578b\u7684\u5be6\u73fe<\/h2>\n
\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u53ef\u4ee5\u5b9a\u7fa9\u4e00\u4e9b\u985e\u578b\u4f86\u5be6\u73fe\u9019\u500b\u63a5\u53e3\u3002\u4f8b\u5982\uff0c\u6211\u5011\u53ef\u4ee5\u5b9a\u7fa9 Dog<\/code> \u548c Cat<\/code> \u985e\u578b\uff1a<\/p>\n
type Dog struct{}\ntype Cat struct{}\n\nfunc (d Dog) Speak() string {\n    return \"Woof!\"\n}\n\nfunc (c Cat) Speak() string {\n    return \"Meow!\"\n}\n<\/code><\/pre>\n
\u5728\u9019\u88e1\uff0cDog<\/code> \u548c Cat<\/code> \u90fd\u5be6\u73fe\u4e86 Animal<\/code> \u63a5\u53e3\uff0c\u56e0\u70ba\u5b83\u5011\u90fd\u63d0\u4f9b\u4e86 Speak<\/code> \u65b9\u6cd5\u3002<\/p>\n
\u63a5\u53e3\u548c\u985e\u578b\u4e4b\u9593\u7684\u8f49\u63db<\/h2>\n
\u5728 Go \u8a9e\u8a00\u4e2d\uff0c\u63a5\u53e3\u548c\u5177\u9ad4\u985e\u578b\u4e4b\u9593\u7684\u8f49\u63db\u662f\u975e\u5e38\u7c21\u55ae\u7684\u3002\u7576\u4e00\u500b\u5177\u9ad4\u985e\u578b\u7684\u5be6\u4f8b\u88ab\u8ce6\u503c\u7d66\u4e00\u500b\u63a5\u53e3\u985e\u578b\u7684\u8b8a\u91cf\u6642\uff0cGo \u8a9e\u8a00\u6703\u81ea\u52d5\u9032\u884c\u8f49\u63db\u3002<\/p>\n
var animal Animal\n\nanimal = Dog{}\nfmt.Println(animal.Speak()) \/\/ \u8f38\u51fa: Woof!\n\nanimal = Cat{}\nfmt.Println(animal.Speak()) \/\/ \u8f38\u51fa: Meow!\n<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u5c07 Dog<\/code> \u548c Cat<\/code> \u7684\u5be6\u4f8b\u8ce6\u503c\u7d66 animal<\/code> \u8b8a\u91cf\uff0c\u9019\u662f\u4e00\u500b Animal<\/code> \u63a5\u53e3\u985e\u578b\u7684\u8b8a\u91cf\u3002\u7136\u5f8c\uff0c\u6211\u5011\u53ef\u4ee5\u8abf\u7528 Speak<\/code> \u65b9\u6cd5\uff0c\u4e26\u6839\u64da\u5177\u9ad4\u985e\u578b\u7684\u4e0d\u540c\u7372\u5f97\u4e0d\u540c\u7684\u8f38\u51fa\u3002<\/p>\n
\u985e\u578b\u65b7\u8a00<\/h2>\n
\u6709\u6642\u5019\uff0c\u6211\u5011\u9700\u8981\u5f9e\u63a5\u53e3\u985e\u578b\u8f49\u63db\u56de\u5177\u9ad4\u985e\u578b\u3002\u9019\u6642\u53ef\u4ee5\u4f7f\u7528\u985e\u578b\u65b7\u8a00\uff08type assertion\uff09\u3002\u985e\u578b\u65b7\u8a00\u5141\u8a31\u6211\u5011\u6aa2\u67e5\u63a5\u53e3\u7684\u5177\u9ad4\u985e\u578b\u4e26\u9032\u884c\u8f49\u63db\u3002<\/p>\n
if dog, ok := animal.(Dog); ok {\n    fmt.Println(\"This is a dog:\", dog.Speak())\n} else {\n    fmt.Println(\"This is not a dog.\")\n}\n<\/code><\/pre>\n
\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528\u985e\u578b\u65b7\u8a00\u4f86\u6aa2\u67e5 animal<\/code> \u662f\u5426\u70ba Dog<\/code> \u985e\u578b\u3002\u5982\u679c\u662f\uff0c\u6211\u5011\u5c31\u53ef\u4ee5\u5b89\u5168\u5730\u4f7f\u7528 dog<\/code> \u8b8a\u91cf\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
Go \u8a9e\u8a00\u4e2d\u7684\u63a5\u53e3\u548c\u985e\u578b\u4e4b\u9593\u7684\u8f49\u63db\u662f\u4e00\u500b\u5f37\u5927\u4e14\u9748\u6d3b\u7684\u7279\u6027\uff0c\u4f7f\u5f97\u958b\u767c\u8005\u80fd\u5920\u7de8\u5beb\u66f4\u5177\u53ef\u64f4\u5c55\u6027\u548c\u53ef\u7dad\u8b77\u6027\u7684\u4ee3\u78bc\u3002\u901a\u904e\u7406\u89e3\u63a5\u53e3\u7684\u5b9a\u7fa9\u3001\u985e\u578b\u7684\u5be6\u73fe\u4ee5\u53ca\u5982\u4f55\u9032\u884c\u8f49\u63db\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u5229\u7528 Go \u8a9e\u8a00\u7684\u7279\u6027\u4f86\u69cb\u5efa\u61c9\u7528\u7a0b\u5e8f\u3002<\/p>\n
\u5982\u679c\u60a8\u5c0d\u65bc \u9999\u6e2fVPS<\/a> \u670d\u52d9\u6709\u8208\u8da3\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f\u9700\u8981\u9ad8\u6027\u80fd\u7684 \u4e91\u670d\u52a1\u5668<\/a> \u9084\u662f\u7a69\u5b9a\u7684 \u9999\u6e2f\u670d\u52a1\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u63d0\u4f9b\u76f8\u61c9\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22Go\u8a9e\u8a00\u4e2d\u63a5\u53e3\u8207\u985e\u578b\u4e4b\u9593\u7684\u8f49\u63db\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u5730\u4f7f\u7528\u9019\u4e9b\u7279\u6027\u4f86\u63d0\u5347\u4f60\u7684\u7de8\u7a0b\u6280\u5de7\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-57752","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57752","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=57752"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57752\/revisions"}],"predecessor-version":[{"id":57753,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57752\/revisions\/57753"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=57752"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=57752"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=57752"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}