{"id":149362,"date":"2020-08-23T00:43:23","date_gmt":"2020-08-22T16:43:23","guid":{"rendered":"http:\/\/4563.org\/?p=149362"},"modified":"2020-08-23T00:43:23","modified_gmt":"2020-08-22T16:43:23","slug":"%e9%97%ae%e4%b8%aa-go-%e5%9f%ba%e7%a1%80%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=149362","title":{"rendered":"\u95ee\u4e2a go \u57fa\u7840\u95ee\u9898"},"content":{"rendered":"
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\u95ee\u4e2a go \u57fa\u7840\u95ee\u9898 <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : loriann <\/span> <\/i> 8<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
\u6211\u770b\u4ee3\u7801\u65f6\u770b\u5230\u4e0b\u9762\u8fd9\u6bb5\u6709\u70b9\u8ff7\u60d1\uff0c\u968f\u4fbf\u5199\u4e2a demo
type X struct{
}<\/p>\n

\u8bf7\u95ee(*X)(nil)\u8868\u793a\u4ec0\u4e48\uff1f \u6211\u770b\u4e86\u7c7b\u578b\u5e94\u8be5\u65f6 X \u7684\u6307\u9488\uff0c\u8fd9\u4e2a\u6709\u4ec0\u4e48\u7528\u5462\uff1f <\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (8<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : ahsjs <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u628a nil \u8f6c\u4e3a X \u6307\u9488\uff0c\u548c\u666e\u901a\u7684 nil \u6709\u4e9b\u533a\u522b
    a := (*X)(nil)
    reflect.TypeOf(nil)
    reflect.TypeOf(a) <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : CEBBCAT <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6211\u60f3\u662f\u4e00\u4e2a\u7a7a\u7684\u6307\u5411 X \u7684\u6307\u9488\uff0c\u5177\u4f53\u4f5c\u7528\u8fd8\u8981\u7ed3\u5408\u4ee3\u7801\uff0c\u6211\u597d\u50cf\u6ca1\u6709\u8fd9\u6837\u7528\u8fc7 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : rrfeng <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u8ddf var a *X \u6ca1\u533a\u522b\u5427\uff1f\u6307\u9488\u58f0\u660e\u4e86\u9ed8\u8ba4\u662f nil <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : linxl <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u8868\u793a\u6ca1\u8fd9\u6837\u7528\u8fc7, \u4e0b\u6587\u662f\u63a5\u7740\u5e72\u5565\u7528? <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : loriann <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @ahsjs \u55ef\uff0c\u662f\u8fd9\u6837\u7684\uff0c\u6211\u770b\u540e\u534a\u5929\u624d\u7406\u89e3\u3002\u6211\u662f\u5728\u51fd\u6570\u4f20\u53c2\u6570\u65f6\u770b\u5230\u7684 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : rrfeng <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    Your `test3 := (*Struct)(nil)` is just a obfuscated variant of the idiomatic `var test3 *Struct`.<\/p>\n

    from https:\/\/stackoverflow.com\/questions\/27827871\/what-the-difference-between-tnil-and-t-newt-golang <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : loriann <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @rrfeng \u55ef\uff0c\u8c22\u8c22\uff0c\u770b\u540e\u90fd\u660e\u767d\u4e86 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : liuxu <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u8fd9\u79cd\u65b9\u5f0f\u5199 C \u7684\u548c C++\u7684\u7528\u7684\u591a <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    \u95ee\u4e2a go \u57fa\u7840\u95ee\u9898 \u8cc7\u6df1\u5927\u4f6c :…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/149362"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=149362"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/149362\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=149362"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=149362"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=149362"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}