{"id":208126,"date":"2025-07-08T08:35:29","date_gmt":"2025-07-08T00:35:29","guid":{"rendered":"https:\/\/server.hk\/cnblog\/208126\/"},"modified":"2025-07-08T08:35:29","modified_gmt":"2025-07-08T00:35:29","slug":"%e8%af%ad%e6%b3%95%e9%94%99%e8%af%af%ef%bc%9a%e5%8f%98%e9%87%8f%e7%94%a8%e4%bd%9c%e5%80%bc%ef%bc%8cgo-%e4%b8%ad%e7%9a%84-for-%e5%be%aa%e7%8e%af","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/208126\/","title":{"rendered":"\u8bed\u6cd5\u9519\u8bef\uff1a\u53d8\u91cf\u7528\u4f5c\u503c\uff0cGo \u4e2d\u7684 for \u5faa\u73af"},"content":{"rendered":"

<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u8bed\u6cd5\u9519\u8bef\uff1a\u53d8\u91cf\u7528\u4f5c\u503c\uff0cGo \u4e2d\u7684 for \u5faa\u73af<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-29 11:06:34<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u6253\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0\u300a\u8bed\u6cd5\u9519\u8bef\uff1a\u53d8\u91cf\u7528\u4f5c\u503c\uff0cGo \u4e2d\u7684 for \u5faa\u73af\u300b<\/span>\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\u5427\uff01\u6587\u4e2d\u5185\u5bb9\u5305\u542b<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9…\u5e0c\u671b\u4f60\u80fd\u5728\u9605\u8bfb\u672c\u6587\u540e\uff0c\u80fd\u771f\u771f\u5b9e\u5b9e\u5b66\u5230\u77e5\u8bc6\u6216\u8005\u5e2e\u4f60\u89e3\u51b3\u5fc3\u4e2d\u7684\u7591\u60d1\uff0c\u4e5f\u6b22\u8fce\u5927\u4f6c\u6216\u8005\u65b0\u4eba\u670b\u53cb\u4eec\u591a\u7559\u8a00\u8bc4\u8bba\uff0c\u591a\u7ed9\u5efa\u8bae\uff01\u8c22\u8c22\uff01<\/p>\n

\u95ee\u9898\u5185\u5bb9
\n <\/p>\n

\u6211\u5bf9 go \u5b8c\u5168\u964c\u751f\uff0c\u6b63\u5728\u6d4f\u89c8 https:\/\/tour.golang.org\/flowcontrol\/8<\/p>\n

\u6211\u5c1d\u8bd5\u4e86\u4ee5\u4e0b for \u5faa\u73af\uff08\u5b83\u662f\u5426\u771f\u6b63\u89e3\u51b3\u4e86\u9875\u9762\u63d0\u51fa\u7684\u95ee\u9898\u65e0\u5173\u7d27\u8981\uff0c\u6211\u53ea\u5bf9\u8fd9\u91cc\u7684\u8bed\u6cd5\u611f\u5174\u8da3\uff09\u3002\u60a8\u53ef\u4ee5\u5047\u8bbe\u7ed9\u51fa\u4e86 z<\/code> \u548c x<\/code>\uff1a<\/p>\n

for z < x; z -= (z*z - x) \/ (2*z) {\n    fmt.println(z)\n}<\/pre>\n
\u5f53\u6211\u5c1d\u8bd5\u8fd0\u884c\u65f6\u51fa\u73b0\u4ee5\u4e0b\u9519\u8bef\uff1a<\/p>\n
.\/prog.go:9:36\uff1a\u8bed\u6cd5\u9519\u8bef\uff1a\u610f\u5916\u7684 {\uff0c\u9700\u8981\u5206\u53f7\u6216\u6362\u884c\u7b26 .\/prog.go:10:17: \u8bed\u6cd5\u9519\u8bef\uff1az -= (z * z - x) \/ (2 * z) \u7528\u4f5c\u503c<\/code><\/p>\n
\u6211\u53ef\u4ee5\u901a\u8fc7\u5c06\u5faa\u73af\u66f4\u6539\u4e3a\u8fd9\u6837\u6765\u6d88\u9664\u7b2c\u4e00\u4e2a\u9519\u8bef\uff1a<\/p>\n
for z < x; z -= (z*z - x) \/ (2*z); {\n    fmt.Println(z)\n}<\/pre>\n
\u4f46\u6211\u4ecd\u7136\u6536\u5230\u7b2c\u4e8c\u4e2a\u9519\u8bef\u3002<\/p>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u4f60\u7684\u5faa\u73af\u5e94\u8be5\u662f\u8fd9\u6837\u7684<\/p>\n
for ;z < x; z -= (z*z - x) \/ (2*z) { fmt.Println(z) }<\/code><\/p>\n
;<\/em> \u5e94\u8be5\u51fa\u73b0\u5728 z < x \u6761\u4ef6\u4e4b\u524d\uff0c\u8fd9\u662f\u56e0\u4e3a\uff0c for \u5faa\u73af\u7684\u8bed\u6cd5\u4e3a for [control var] \uff1b [\u5065\u5eb7\uff09\u72b6\u51b5] ; [\u8fed\u4ee3] { \/\/\u6b63\u6587 }<\/p>\n
\u53ea\u9700\u4e00\u4e2a;<\/em>\u5c31\u53ef\u4ee5\u7528\u4f5c\u7a7a\u8bed\u53e5\uff0c\u56e0\u6b64\u901a\u8fc7\u4f7f\u7528\u5b83\uff0c\u6211\u4eec\u4e3afor\u5faa\u73af\u63d0\u4f9b\u4e86\u6240\u6709\u5fc5\u9700\u7684\u53c2\u6570\u3002 \uff1b x < z; x++<\/code> \u6b63\u5982\u4f60\u6240\u770b\u5230\u7684\uff0c\u9664\u4e86\u7b2c\u4e00\u4e2a\u5206\u53f7\u8868\u793a\u7a7a\/\u7a7a\u8bed\u53e5\uff08\u56e0\u4e3a\u6211\u4eec\u6ca1\u6709\u8bbe\u7f6e\u4efb\u4f55\u53d8\u91cf\uff09\uff0c\u7b2c\u4e8c\u4e2a\u662f\u6761\u4ef6\uff0c\u7b2c\u4e09\u4e2a\u662f\u8fed\u4ee3\u547d\u4ee4\u3002<\/p>\n
\u73b0\u5728\u60a8\u53ef\u4ee5\u6e05\u695a\u5730\u4e86\u89e3\u7b2c\u4e8c\u79cd\u65b9\u6cd5 z < x; z -= (z*z - x) \/ (2*z);<\/code> z < x \u662f\u63a7\u5236\u53d8\u91cf\uff0c\u8fd9\u4f1a\u5bfc\u81f4\u9519\u8bef\uff0c\u56e0\u4e3a (z < x) \u4e0d\u662f\u53d8\u91cf\u3002\u9519\u8bef\u7684\u539f\u56e0\u662f z -=( z*z-x)\/(2*z) \u88ab\u89c6\u4e3a\u6761\u4ef6\u503c\uff0c\u56e0\u4e3a\u8fd9\u4e0d\u662f\u4e00\u4e2a\u503c\u800c\u662f\u4e00\u4e2a\u8bed\u53e5\uff0c\u56e0\u6b64\u4f1a\u5f15\u53d1\u9519\u8bef\u3002<\/p>\n
\u5e0c\u671b\u4f60\u80fd\u7406\u89e3…<\/p>\n
\u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\uff01\u66f4\u591a\u5173\u4e8eGolang\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5f53\u524d\u4f4d\u7f6e\uff1a > > ...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-208126","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208126","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=208126"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208126\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=208126"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=208126"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=208126"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}