{"id":208201,"date":"2025-07-08T12:19:37","date_gmt":"2025-07-08T04:19:37","guid":{"rendered":"https:\/\/server.hk\/cnblog\/208201\/"},"modified":"2025-07-08T12:19:37","modified_gmt":"2025-07-08T04:19:37","slug":"%e5%88%97%e5%87%ba%e5%8c%85movetofront%e4%b8%8d%e9%80%82%e5%90%88%e6%88%91","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/208201\/","title":{"rendered":"\u5217\u51fa\u5305\u201cMoveToFront\u201d\u4e0d\u9002\u5408\u6211"},"content":{"rendered":"

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

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u5217\u51fa\u5305\u201cMoveToFront\u201d\u4e0d\u9002\u5408\u6211<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-30 10:33:36<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u5077\u5077\u52aa\u529b\uff0c\u6084\u65e0\u58f0\u606f\u5730\u53d8\u5f3a\uff0c\u7136\u540e\u60ca\u8273\u6240\u6709\u4eba\uff01\u54c8\u54c8\uff0c\u5c0f\u4f19\u4f34\u4eec\u53c8\u6765\u5b66\u4e60\u5566~\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u300a\u5217\u51fa\u5305\u201cMoveToFront\u201d\u4e0d\u9002\u5408\u6211\u300b<\/span>\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u4f1a\u8bb2\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u4e0d\u77e5\u9053\u5927\u5bb6\u5bf9\u5176\u90fd\u6709\u591a\u5c11\u4e86\u89e3\uff0c\u4e0b\u9762\u6211\u4eec\u5c31\u4e00\u8d77\u6765\u770b\u4e00\u5427\uff01\u5f53\u7136\uff0c\u975e\u5e38\u5e0c\u671b\u5927\u5bb6\u80fd\u591a\u591a\u8bc4\u8bba\uff0c\u7ed9\u51fa\u5408\u7406\u7684\u5efa\u8bae\uff0c\u6211\u4eec\u4e00\u8d77\u5b66\u4e60\uff0c\u4e00\u8d77\u8fdb\u6b65\uff01<\/p>\n

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

go \u65b0\u624b\uff0c\u6b63\u5728 go \u4e2d\u6784\u5efa\u4e00\u4e2a\u7b80\u5355\u7684 lru \u7f13\u5b58\u4ee5\u4e60\u60ef\u8bed\u6cd5\u548c go \u5f00\u53d1\u3002<\/p>\n

movetofront<\/code> \u5217\u8868\u65b9\u6cd5\u5b58\u5728\u95ee\u9898\uff0c\u5728 movetofront<\/code> \u4e3b\u4f53\u4e2d\u8fdb\u884c\u4ee5\u4e0b\u68c0\u67e5\u65f6\u5931\u8d25<\/p>\n

if e.list != l || l.root.next == e<\/pre>\n
\u5f53\u6211\u4ece\u7f13\u5b58\u4e2d\u68c0\u7d22\u5143\u7d20\uff08e\uff09\u65f6\uff0c\u6211\u60f3\u5c06\u5176\u79fb\u52a8\u5230\u5217\u8868\u7684\u524d\u9762\uff0c\u5982\u4e0b\u6240\u793a<\/p>\n
if elem, ok := lc.entries[k]; ok {\n    lc.list.MoveToFront(elem) \/\/ needs fixing\n    return elem\n}\nreturn nil<\/pre>\n
\u4ee3\u7801\u53ef\u4ee5\u5728\u7b2c 32 \u884c\u770b\u5230\u95ee\u9898\u53d1\u751f<\/p>\n
https:\/\/github.com\/hajjboy95\/golrucache\/blob\/master\/lru_cache\/lrucache.go#l32<\/p>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u5bf9\u6211\u6765\u8bf4\u4f3c\u4e4e\u6709\u4e24\u4e2a\u95ee\u9898\u3002\u9996\u5148\uff0c\u8fd9\u4e0d\u662f List \u6570\u636e\u7c7b\u578b\u7684\u4f7f\u7528\u65b9\u5f0f\uff1alc.list.PushFront()<\/code> \u5c06\u521b\u5efa<\/em>\u4e00\u4e2a List.Element<\/code> \u5e76\u8fd4\u56de\u6307\u5411\u5b83\u7684\u6307\u9488\u3002\u8fd9\u5e76\u4e0d\u81f4\u547d\uff0c\u4f46\u81f3\u5c11\u6709\u70b9\u70e6\u4eba\u2014\u2014\u8c03\u7528\u8005\u5728\u4f7f\u7528 Get<\/code> \u65f6\u5fc5\u987b\u6316\u6398\u8fd4\u56de\u7684 List.Element<\/code>\uff0c\u800c\u4e0d\u662f\u4ec5\u4ec5\u83b7\u53d6\u503c\u3002<\/p>\n
\u540c\u65f6\uff0c\u60a8\u770b\u5230\u7684\u5931\u8d25\u53ef\u80fd\u662f\u56e0\u4e3a\u5f53 LRU \u5217\u8868\u7a7a\u95f4\u4e0d\u8db3\u65f6\u60a8\u5220\u9664\u4e86 Put<\/code> \u4e2d\u7684\u5143\u7d20\uff0c\u4f46\u60a8\u6ca1\u6709\u4ece\u76f8\u5e94\u7684\u6620\u5c04\u4e2d\u5220\u9664\u5b83\u4eec\u3002\u56e0\u6b64\uff0c\u7a0d\u540e\u521a\u521a\u5220\u9664\u7684\u952e\u7684 Put<\/code> \u5c06\u5c1d\u8bd5\u5728\u9002\u5f53\u7684\u4f4d\u7f6e\u91cd\u65b0\u4f7f\u7528\u8be5\u5143\u7d20\uff0c\u5373\u4f7f\u8be5\u5143\u7d20\u5df2\u4ece\u5217\u8868\u4e2d\u5220\u9664\u3002\u8981\u89e3\u51b3\u6b64\u95ee\u9898\uff0c\u60a8\u9700\u8981\u540c\u65f6\u4fdd\u7559\u952e\u548c\u503c\u3002 \uff08\u5728\u6211\u7684\u7b80\u5355\u5b9e\u9a8c\u4e2d\uff0c\u6211\u6ca1\u6709\u770b\u5230\u4efb\u4f55\u5931\u8d25\uff0c\u4f46\u95ee\u9898\u53d8\u5f97\u8db3\u591f\u6e05\u6670\u3002\uff09<\/p>\n
\u6211\u5bf9\u4ee3\u7801\u8fdb\u884c\u4e86\u4e00\u4e9b\u91cd\u7ec4\uff0c\u5e76\u5c06\u5176\u53d8\u6210\u4e86 \u3002\u6211\u5bf9\u9002\u7528\u6027\u7b49\u4e0d\u505a\u4efb\u4f55\u627f\u8bfa<\/p>\n
\u672c\u7bc7\u5173\u4e8e\u300a\u5217\u51fa\u5305\u201cMoveToFront\u201d\u4e0d\u9002\u5408\u6211\u300b\u7684\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\u5566\uff0c\u4f46\u662f\u5b66\u65e0\u6b62\u5883\uff0c\u60f3\u8981\u4e86\u89e3\u5b66\u4e60\u66f4\u591a\u5173\u4e8eGolang\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/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-208201","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208201","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=208201"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208201\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=208201"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=208201"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=208201"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}