{"id":207289,"date":"2025-07-08T08:07:25","date_gmt":"2025-07-08T00:07:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207289\/"},"modified":"2025-07-08T08:07:25","modified_gmt":"2025-07-08T00:07:25","slug":"tt-%e5%92%8c-tnewt-%e4%b9%8b%e9%97%b4%e7%9a%84%e6%a0%b8%e5%bf%83%e5%8c%ba%e5%88%ab%e6%98%af%e4%bb%80%e4%b9%88","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207289\/","title":{"rendered":"t=&T{} \u548c t=new(T) \u4e4b\u95f4\u7684\u6838\u5fc3\u533a\u522b\u662f\u4ec0\u4e48"},"content":{"rendered":"

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

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> t=&T{} \u548c t=new(T) \u4e4b\u95f4\u7684\u6838\u5fc3\u533a\u522b\u662f\u4ec0\u4e48<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-21 14:24:36<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u4eca\u65e5\u4e0d\u80af\u57cb\u5934\uff0c\u660e\u65e5\u4f55\u4ee5\u62ac\u5934\uff01\u6bcf\u65e5\u4e00\u53e5\u52aa\u529b\u81ea\u5df1\u7684\u8bdd\u54c8\u54c8~\u54c8\u55bd\uff0c\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7\u300at=&T{} \u548c t=new(T) \u4e4b\u95f4\u7684\u6838\u5fc3\u533a\u522b\u662f\u4ec0\u4e48\u300b<\/span>\uff0c\u4e3b\u8981\u5185\u5bb9\u662f\u8bb2\u89e3<\/span>\u7b49\u7b49\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u53ef\u4ee5\u6536\u85cf\u6216\u8005\u6709\u66f4\u597d\u7684\u5efa\u8bae\u5728\u8bc4\u8bba\u63d0\u51fa\uff0c\u6211\u90fd\u4f1a\u8ba4\u771f\u770b\u7684\uff01\u5927\u5bb6\u4e00\u8d77\u8fdb\u6b65\uff0c\u4e00\u8d77\u5b66\u4e60\uff01<\/p>\n

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

\u4f3c\u4e4e\u8fd9\u4e24\u79cd\u521b\u5efa\u6210\u5458\u503c\u5168\u90e8\u4e3a\u201c0\u201d\u7684\u65b0\u5bf9\u8c61\u6307\u9488\u7684\u65b9\u6cd5\uff0c\u90fd\u8fd4\u56de\u4e00\u4e2a\u6307\u9488\uff1a<\/p>\n

type T struct{}\n...\nt1:=&T{}\nt2:=new(T)<\/pre>\n
\u90a3\u4e48 t1 \u548c t2 \u4e4b\u95f4\u7684\u6838\u5fc3\u533a\u522b\u662f\u4ec0\u4e48\uff0c\u6216\u8005\u6709\u4ec0\u4e48\u662f\u201cnew\u201d\u53ef\u4ee5\u505a\u800c &t{} \u4e0d\u80fd\u505a\u7684\uff0c\u6216\u8005\u53cd\u4e4b\u4ea6\u7136\uff1f<\/p>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
[\u2026] \u6709\u4ec0\u4e48\u4e8b\u60c5\u662f\u201cnew\u201d\u53ef\u4ee5\u505a\u800c &t{} \u4e0d\u80fd\u505a\u7684\uff0c\u6216\u8005\u53cd\u4e4b\u4ea6\u7136\uff1f<\/p>\n
\u6211\u53ef\u4ee5\u60f3\u5230\u4e09\u4e2a\u533a\u522b\uff1a<\/p>\n
    \n
  • \u201c\u590d\u5408\u6587\u5b57\u201d\u8bed\u6cd5\uff08&t{}<\/code> \u7684 t{}<\/code> \u90e8\u5206\uff09\u4ec5\u9002\u7528\u4e8e\u201c\u7ed3\u6784\u4f53\u3001\u6570\u7ec4\u3001\u5207\u7247\u548c\u6620\u5c04\u201d[]\uff0c\u800c new<\/code> \u51fd\u6570\u9002\u7528\u4e8e\u4efb\u4f55\u7c7b\u578b [] .<\/li>\n
  • \u5bf9\u4e8e\u7ed3\u6784\u4f53\u6216\u6570\u7ec4\u7c7b\u578b\uff0cnew<\/code> \u51fd\u6570\u59cb\u7ec8\u4e3a\u5176\u5143\u7d20\u751f\u6210\u96f6\u503c\uff0c\u800c\u590d\u5408\u6587\u5b57\u8bed\u6cd5\u53ef\u8ba9\u60a8\u6839\u636e\u9700\u8981\u5c06\u67d0\u4e9b\u5143\u7d20\u521d\u59cb\u5316\u4e3a\u975e\u96f6\u503c\u3002<\/li>\n
  • \u5bf9\u4e8e\u5207\u7247\u6216\u6620\u5c04\u7c7b\u578b\uff0cnew<\/code> \u51fd\u6570\u59cb\u7ec8\u8fd4\u56de\u6307\u5411 nil<\/code> \u7684\u6307\u9488\uff0c\u800c\u590d\u5408\u6587\u5b57\u8bed\u6cd5\u59cb\u7ec8\u8fd4\u56de\u521d\u59cb\u5316\u7684\u5207\u7247\u6216\u6620\u5c04\u3002 \uff08\u5bf9\u4e8e\u6620\u5c04\u800c\u8a00\uff0c\u8fd9\u4e00\u70b9\u975e\u5e38\u91cd\u8981\uff0c\u56e0\u4e3a\u60a8\u65e0\u6cd5\u5411 nil<\/code> \u6dfb\u52a0\u5143\u7d20\u3002\uff09\u6b64\u5916\uff0c\u590d\u5408\u6587\u5b57\u8bed\u6cd5\u751a\u81f3\u53ef\u4ee5\u521b\u5efa\u975e<\/em>\u7a7a\u5207\u7247\u6216\u6620\u5c04\u3002<\/li>\n<\/ul>\n
    \uff08\u7b2c\u4e8c\u4e2a\u548c\u7b2c\u4e09\u4e2a\u8981\u70b9\u5b9e\u9645\u4e0a\u662f\u540c\u4e00\u4ef6\u4e8b\u7684\u4e24\u4e2a\u65b9\u9762 – new<\/code> \u51fd\u6570\u59cb\u7ec8\u521b\u5efa\u96f6\u503c – \u4f46\u6211\u5355\u72ec\u5217\u51fa\u5b83\u4eec\uff0c\u56e0\u4e3a\u4e0d\u540c\u7c7b\u578b\u7684\u542b\u4e49\u6709\u70b9\u4e0d\u540c\u3002\uff09<\/p>\n
    \u5bf9\u4e8e\u7ed3\u6784\u4f53\u548c\u5176\u4ed6\u590d\u5408\u4f53\uff0c\u4e24\u8005\u662f\u76f8\u540c\u7684\u3002 <\/p>\n
    t1:=&t{}\nt2:=new(t)\n\/\/both are same<\/pre>\n
    \u5982\u679c\u4e0d\u4f7f\u7528 new<\/code>\uff0c\u5219\u65e0\u6cd5\u8fd4\u56de\u521d\u59cb\u5316\u4e3a int \u7b49\u5176\u4ed6\u57fa\u672c\u7c7b\u578b\u96f6\u503c\u7684\u672a\u547d\u540d\u53d8\u91cf\u7684\u5730\u5740\u3002\u60a8\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u547d\u540d\u53d8\u91cf\uff0c\u7136\u540e\u83b7\u53d6\u5176\u5730\u5740\u3002 <\/p>\n
    func newint() *int {            \n    return new(int)                 \n}<\/pre>\n
    func newInt() *int {\n    \/\/ return &int{} --> invalid\n    var dummy int\n    return &dummy\n}<\/pre>\n
    \u4ee5\u4e0a\u5c31\u662f\u300at=&T{} \u548c t=new(T) \u4e4b\u95f4\u7684\u6838\u5fc3\u533a\u522b\u662f\u4ec0\u4e48\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8e\u7684\u8d44\u6599\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-207289","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207289","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=207289"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207289\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207289"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207289"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207289"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}