{"id":206418,"date":"2025-06-12T08:50:38","date_gmt":"2025-06-12T00:50:38","guid":{"rendered":"https:\/\/server.hk\/cnblog\/206418\/"},"modified":"2025-06-12T08:50:38","modified_gmt":"2025-06-12T00:50:38","slug":"%e4%b8%ba%e4%bb%80%e4%b9%88%e5%9c%a8-go-%e4%bb%a3%e7%a0%81%e4%b8%ad%ef%bc%8c%e5%90%91%e5%88%87%e7%89%87%e4%b8%ad%e6%b7%bb%e5%8a%a0%e5%85%83%e7%b4%a0%e5%90%8e%ef%bc%8c%e5%88%87%e7%89%87%e7%9a%84","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/206418\/","title":{"rendered":"\u4e3a\u4ec0\u4e48\u5728 Go \u4ee3\u7801\u4e2d\uff0c\u5411\u5207\u7247\u4e2d\u6dfb\u52a0\u5143\u7d20\u540e\uff0c\u5207\u7247\u7684\u5bb9\u91cf\uff08cap\uff09\u4f1a\u53d8\u6210 6 \u800c\u4e0d\u662f 5\uff1f"},"content":{"rendered":"<p>\u77e5\u8bc6\u70b9\u638c\u63e1\u4e86\uff0c\u8fd8\u9700\u8981\u4e0d\u65ad\u7ec3\u4e60\u624d\u80fd\u719f\u7ec3\u8fd0\u7528\u3002\u4e0b\u9762GOLANG\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u4e2aGOLANG\u5f00\u53d1\u5b9e\u6218\uff0c\u624b\u628a\u624b\u6559\u5927\u5bb6\u5b66\u4e60\u300a\u4e3a\u4ec0\u4e48\u5728 Go \u4ee3\u7801\u4e2d\uff0c\u5411\u5207\u7247\u4e2d\u6dfb\u52a0\u5143\u7d20\u540e\uff0c\u5207\u7247\u7684\u5bb9\u91cf\uff08cap\uff09\u4f1a\u53d8\u6210 6 \u800c\u4e0d\u662f 5\uff1f\u300b\uff0c\u5728\u5b9e\u73b0\u529f\u80fd\u7684\u8fc7\u7a0b\u4e2d\u4e5f\u5e26\u5927\u5bb6\u91cd\u65b0\u6e29\u4e60\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6e29\u6545\u800c\u77e5\u65b0\uff0c\u56de\u5934\u770b\u770b\u8bf4\u4e0d\u5b9a\u53c8\u6709\u4e0d\u4e00\u6837\u7684\u611f\u609f\uff01,<br \/>\n<img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241111\/17313188826731d4628416e.jpg\" class=\"aligncenter\">,<br \/>\n<strong>\u5207\u7247\u5bb9\u91cf\u8ba1\u7b97\uff1acap \u8fd4\u56de 6 \u539f\u56e0<\/strong>,\u5728\u4e0b\u9762\u8fd9\u6bb5 go \u4ee3\u7801\u4e2d\uff0c\u6709\u4e00\u4e2a\u5207\u7247 s\uff0c\u4ee3\u7801\u4e2d\u4f7f\u7528\u4e86 append \u51fd\u6570\u5411 s \u6dfb\u52a0\u4e86\u5143\u7d20\u3002\u95ee\u9898\u662f\uff0c\u5728\u5c06 [2, 3, 4] \u6dfb\u52a0\u5230 s \u540e\uff0ccap(s) \u8fd4\u56de 6\uff0c\u800c\u4e0d\u662f 5\u3002,<br \/>\n<strong>\u56de\u7b54\uff1a<\/strong>,\u867d\u7136\u5207\u7247\u7684 len \u59cb\u7ec8\u7b49\u4e8e\u5b58\u50a8\u5728\u8be5\u5207\u7247\u4e2d\u7684\u5143\u7d20\u6570\u91cf\uff0c\u4f46 cap \u53ef\u4ee5\u6839\u636e\u4e0d\u540c\u7684\u56e0\u7d20\u800c\u6709\u6240\u4e0d\u540c\u3002\u5728 go \u4e2d\uff0ccap(s) \u59cb\u7ec8\u6ee1\u8db3\u4ee5\u4e0b\u6761\u4ef6\uff1a,\u8fd9\u57fa\u672c\u4e0a\u610f\u5473\u7740 cap \u4ece\u4e0d\u5c0f\u4e8e len\u3002,\u5728\u4f60\u7684\u793a\u4f8b\u4e2d\uff0cs \u662f\u4e00\u4e2a\u7a7a\u5207\u7247\uff0c\u6240\u4ee5\u5b83\u7684\u521d\u59cb\u5bb9\u91cf\uff08cap\uff09\u4e3a 0\u3002\u5f53\u6dfb\u52a0\u7b2c\u4e00\u4e2a\u5143\u7d20\u65f6\uff0c\u5bb9\u91cf\u589e\u52a0\u5230 1\u3002\u5f53\u6dfb\u52a0 [2, 3, 4] \u65f6\uff0c\u7531\u4e8e\u5bb9\u91cf\u5fc5\u987b\u5927\u4e8e\u6216\u7b49\u4e8e\u957f\u5ea6\uff0c\u56e0\u6b64\u5bb9\u91cf\u589e\u52a0\u5230 6\u3002\u8fd9\u662f\u4e3a\u4e86\u4f18\u5316\uff0c\u907f\u514d\u9891\u7e41\u5206\u914d\u548c\u590d\u5236\u5207\u7247\u5185\u5b58\u3002,\u4eca\u5929\u5173\u4e8e\u300a\u4e3a\u4ec0\u4e48\u5728 Go \u4ee3\u7801\u4e2d\uff0c\u5411\u5207\u7247\u4e2d\u6dfb\u52a0\u5143\u7d20\u540e\uff0c\u5207\u7247\u7684\u5bb9\u91cf\uff08cap\uff09\u4f1a\u53d8\u6210 6 \u800c\u4e0d\u662f 5\uff1f\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728GOLANG\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01,cap(s) &gt;= len(s),\u5207\u7247\u5bb9\u91cf\u8ba1\u7b97\uff1acap \u8fd4\u56de 6 \u539f\u56e0,\u77e5\u8bc6\u70b9\u638c\u63e1\u4e86\uff0c\u8fd8\u9700\u8981\u4e0d\u65ad\u7ec3\u4e60\u624d\u80fd\u719f\u7ec3\u8fd0\u7528\u3002\u4e0b\u9762GOLANG\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u4e2aGOLANG\u5f00\u53d1\u5b9e\u6218\uff0c\u624b\u628a\u624b\u6559\u5927\u5bb6\u5b66\u4e60\u300a\u4e3a\u4ec0\u4e48\u5728 Go \u4ee3\u7801\u4e2d\uff0c\u5411\u5207\u7247\u4e2d\u6dfb\u52a0\u5143\u7d20\u540e\uff0c\u5207\u7247\u7684\u5bb9\u91cf\uff08cap\uff09\u4f1a\u53d8\u6210 6 \u800c\u4e0d\u662f 5\uff1f\u300b\uff0c\u5728\u5b9e\u73b0\u529f\u80fd\u7684\u8fc7\u7a0b\u4e2d\u4e5f\u5e26\u5927\u5bb6\u91cd\u65b0\u6e29\u4e60\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6e29\u6545\u800c\u77e5\u65b0\uff0c\u56de\u5934\u770b\u770b\u8bf4\u4e0d\u5b9a\u53c8\u6709\u4e0d\u4e00\u6837\u7684\u611f\u609f\uff01,<br \/>\n<b><\/b> <\/p>\n<p>\u5f53\u524d\u4f4d\u7f6e\uff1a <span>&gt;<\/span>  <span>&gt;<\/span>  <span>&gt;<\/span>  <span>&gt;<\/span> <span>\u4e3a\u4ec0\u4e48\u5728 Go \u4ee3\u7801\u4e2d\uff0c\u5411\u5207\u7247\u4e2d\u6dfb\u52a0\u5143\u7d20\u540e\uff0c\u5207\u7247\u7684\u5bb9\u91cf\uff08cap\uff09\u4f1a\u53d8\u6210 6 \u800c\u4e0d\u662f 5\uff1f<\/span><\/p>\n<h1>\u4e3a\u4ec0\u4e48\u5728 Go \u4ee3\u7801\u4e2d\uff0c\u5411\u5207\u7247\u4e2d\u6dfb\u52a0\u5143\u7d20\u540e\uff0c\u5207\u7247\u7684\u5bb9\u91cf\uff08cap\uff09\u4f1a\u53d8\u6210 6 \u800c\u4e0d\u662f 5\uff1f<\/h1>\n<p><span>2024-11-11 17:54:58<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u77e5\u8bc6\u70b9\u638c\u63e1\u4e86\uff0c\u8fd8\u9700\u8981\u4e0d\u65ad\u7ec3\u4e60\u624d\u80fd\u719f\u7ec3\u8fd0\u7528\u3002\u4e0b\u9762GOLANG\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u4e2aGOLANG\u5f00\u53d1\u5b9e\u6218\uff0c\u624b\u628a\u624b\u6559\u5927\u5bb6\u5b66\u4e60\u300a\u4e3a\u4ec0\u4e48\u5728 Go \u4ee3\u7801\u4e2d\uff0c\u5411\u5207\u7247\u4e2d\u6dfb\u52a0\u5143\u7d20\u540e\uff0c\u5207\u7247\u7684\u5bb9\u91cf\uff08cap\uff09\u4f1a\u53d8\u6210 6 \u800c\u4e0d\u662f 5\uff1f\u300b\uff0c\u5728\u5b9e\u73b0\u529f\u80fd\u7684\u8fc7\u7a0b\u4e2d\u4e5f\u5e26\u5927\u5bb6\u91cd\u65b0\u6e29\u4e60\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6e29\u6545\u800c\u77e5\u65b0\uff0c\u56de\u5934\u770b\u770b\u8bf4\u4e0d\u5b9a\u53c8\u6709\u4e0d\u4e00\u6837\u7684\u611f\u609f\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241111\/17313188826731d4628416e.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u5207\u7247\u5bb9\u91cf\u8ba1\u7b97\uff1acap \u8fd4\u56de 6 \u539f\u56e0<\/strong><\/p>\n<p>\u5728\u4e0b\u9762\u8fd9\u6bb5 go \u4ee3\u7801\u4e2d\uff0c\u6709\u4e00\u4e2a\u5207\u7247 s\uff0c\u4ee3\u7801\u4e2d\u4f7f\u7528\u4e86 append \u51fd\u6570\u5411 s \u6dfb\u52a0\u4e86\u5143\u7d20\u3002\u95ee\u9898\u662f\uff0c\u5728\u5c06 [2, 3, 4] \u6dfb\u52a0\u5230 s \u540e\uff0ccap(s) \u8fd4\u56de 6\uff0c\u800c\u4e0d\u662f 5\u3002<\/p>\n<pre>package main\n\nimport \"fmt\"\n\nfunc main() {\n    var s []int\n    printSlice(s) \/\/ len=0 cap=0 []\n\n    \/\/ \u6dfb\u52a0\u4e00\u4e2a\u7a7a\u5207\u7247\n    s = append(s, 0)\n    printSlice(s) \/\/ len=1 cap=1 [0]\n\n    \/\/ \u8fd9\u4e2a\u5207\u7247\u4f1a\u6309\u9700\u589e\u957f\n    s = append(s, 1)\n    printSlice(s) \/\/ len=2 cap=2 [0 1]\n\n    \/\/ \u53ef\u4ee5\u4e00\u6b21\u6027\u6dfb\u52a0\u591a\u4e2a\u5143\u7d20\n    s = append(s, 2, 3, 4)\n    printSlice(s) \/\/ len=5 cap=6 [0 1 2 3 4]  cap\u4e3a\u4ec0\u4e48\u662f6\uff1f\n}\n\nfunc printSlice(s []int) {\n    fmt.Printf(\"len=%d cap=%d %v\\n\", len(s), cap(s), s)\n}<\/pre>\n<p><strong>\u56de\u7b54\uff1a<\/strong><\/p>\n<p>\u867d\u7136\u5207\u7247\u7684 len \u59cb\u7ec8\u7b49\u4e8e\u5b58\u50a8\u5728\u8be5\u5207\u7247\u4e2d\u7684\u5143\u7d20\u6570\u91cf\uff0c\u4f46 cap \u53ef\u4ee5\u6839\u636e\u4e0d\u540c\u7684\u56e0\u7d20\u800c\u6709\u6240\u4e0d\u540c\u3002\u5728 go \u4e2d\uff0ccap(s) \u59cb\u7ec8\u6ee1\u8db3\u4ee5\u4e0b\u6761\u4ef6\uff1a<\/p>\n<ul>\n<li>cap(s) &gt;= len(s)<\/li>\n<\/ul>\n<p>\u8fd9\u57fa\u672c\u4e0a\u610f\u5473\u7740 cap \u4ece\u4e0d\u5c0f\u4e8e len\u3002<\/p>\n<p>\u5728\u4f60\u7684\u793a\u4f8b\u4e2d\uff0cs \u662f\u4e00\u4e2a\u7a7a\u5207\u7247\uff0c\u6240\u4ee5\u5b83\u7684\u521d\u59cb\u5bb9\u91cf\uff08cap\uff09\u4e3a 0\u3002\u5f53\u6dfb\u52a0\u7b2c\u4e00\u4e2a\u5143\u7d20\u65f6\uff0c\u5bb9\u91cf\u589e\u52a0\u5230 1\u3002\u5f53\u6dfb\u52a0 [2, 3, 4] \u65f6\uff0c\u7531\u4e8e\u5bb9\u91cf\u5fc5\u987b\u5927\u4e8e\u6216\u7b49\u4e8e\u957f\u5ea6\uff0c\u56e0\u6b64\u5bb9\u91cf\u589e\u52a0\u5230 6\u3002\u8fd9\u662f\u4e3a\u4e86\u4f18\u5316\uff0c\u907f\u514d\u9891\u7e41\u5206\u914d\u548c\u590d\u5236\u5207\u7247\u5185\u5b58\u3002<\/p>\n<p>\u4eca\u5929\u5173\u4e8e\u300a\u4e3a\u4ec0\u4e48\u5728 Go \u4ee3\u7801\u4e2d\uff0c\u5411\u5207\u7247\u4e2d\u6dfb\u52a0\u5143\u7d20\u540e\uff0c\u5207\u7247\u7684\u5bb9\u91cf\uff08cap\uff09\u4f1a\u53d8\u6210 6 \u800c\u4e0d\u662f 5\uff1f\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728GOLANG\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   PHP \u8fdb\u7a0b\u4e92\u65a5\uff1a\u8fdb\u7a0b\u7ed3\u675f\u65f6\u4fe1\u53f7\u91cf\u4e3a\u4f55\u672a\u88ab\u963b\u585e\uff1f\n <\/dd>\n<\/dl>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   \u5982\u4f55\u907f\u514d\u8bcd\u7ec4\u62c6\u5206\u5f71\u54cd TF-IDF \u8ba1\u7b97\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u77e5\u8bc6\u70b9\u638c\u63e1\u4e86\uff0c\u8fd8\u9700\u8981\u4e0d\u65ad\u7ec3\u4e60\u624d\u80fd&#46;&#46;&#46;<\/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-206418","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206418","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=206418"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206418\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=206418"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=206418"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=206418"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}