{"id":139976,"date":"2020-07-16T00:19:21","date_gmt":"2020-07-15T16:19:21","guid":{"rendered":"http:\/\/4563.org\/?p=139976"},"modified":"2020-07-16T00:19:21","modified_gmt":"2020-07-15T16:19:21","slug":"%e5%85%b3%e4%ba%8e-golang-%e7%9a%84%e7%b1%bb%e5%9e%8b%e8%bd%ac%e6%8d%a2","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=139976","title":{"rendered":"\u5173\u4e8e golang \u7684\u7c7b\u578b\u8f6c\u6362"},"content":{"rendered":"
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\u5173\u4e8e golang \u7684\u7c7b\u578b\u8f6c\u6362 <\/h1>\n

<\/p>\n

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\u8cc7\u6df1\u5927\u4f6c : echooo0 <\/span> <\/i> 6<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\u63a5\u89e6 golang \u4e0d\u4e45\uff0c\u611f\u89c9\u8fd9\u4e2a\u8bed\u6cd5\u7528\u8d77\u6765\u8ddf\u5176\u4ed6\u8bed\u8a00\u76f8\u6bd4\u9ebb\u70e6\u4e0d\u5c11\u3002\u3002\u3002\u3002<\/p>\n

\u4f7f\u7528 sync.map \u5b58\u50a8 slice \u5207\u7247\u7684\u6570\u636e\uff0c\u4ee3\u7801\u5982\u4e0b<\/p>\n

curSliceI, ok := syncMap.Load(curKey)  curSlice:= curSliceI.([]int)  curSlice:= append(curSlice, curId)  <\/code><\/pre>\n
golang \u5b98\u65b9 sync.map \u7684 Load \u65b9\u6cd5\u8fd4\u56de\u7684\u662f\u4e24\u4e2a\u53c2\u6570\uff0ccurSliceI \u662f interface \u7c7b\u578b\uff0cok \u662f bool \u7c7b\u578b\u4ee3\u8868\u662f\u5426\u6210\u529f<\/p>\n
\u8fd9\u6837\u7684\u8bdd\u8fd8\u8981\u591a\u5199\u4e00\u884c\u6765\u505a\u7c7b\u578b\u8f6c\u6362\u6765\u62ff\u5230 value\uff0c\u6709\u6ca1\u6709\u5565\u65b9\u6cd5\u53ef\u4ee5\u7b80\u5199\u6210\u4e00\u884c\u76f4\u63a5\u62ff\u503c\uff0c\u505a\u7c7b\u578b\u8f6c\u6362\u7684\u3002\u3002\u3002\u3002<\/p>\n
\u800c\u4e14\u8fd9\u4e2a interface \u7c7b\u578b\u7684 curSliceI\uff0c \u5982\u679c\u4e3a\u7a7a\u7684\u8bdd\uff0c\u505a\u7c7b\u578b\u8f6c\u6362\u8fd8\u4f1a panic \u62a5\u9519,\u8fd8\u8981\u50cf\u4e0b\u9762\u8fd9\u6837\u6765\u518d<\/p>\n
\u505a\u4e00\u6b21\u5224\u65ad\uff0c\u6709\u6ca1\u6709\u5565\u7b80\u4fbf\u7684\u5199\u6cd5\u4e48\uff1f<\/p>\n
curSlice, ok := curSliceI.([]int) if !ok {    fmt.Println(\"It's not ok for type\")    return } <\/code><\/pre>\n<\/p><\/div>\n
 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (10<\/span>)        <\/div>\n
 <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : MrTreasure <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u56e0\u4e3a\u6ca1\u6709\u6cdb\u578b\uff0c\u6ca1\u6709\u901a\u7528\u5bb9\u5668\uff0c\u540e\u9762\u52a0\u4e0a\u6cdb\u578b\u5c31\u4e0d\u4f1a\u518d\u81ea\u5df1\u8f6c\u6362\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : echooo0 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @MrTreasure \u770b\u4e86\u4e0b\u6cdb\u578b\u7684\u610f\u4e49\u5199\u7684\u8fd8\u633a\u597d\u7684 https:\/\/www.jianshu.com\/p\/5179ede4c4cf ,<\/p>\n
    \u73b0\u5728 go \u662f\u7528 interface \u8fd9\u79cd\u975e\u4fb5\u5165\u5f0f\u7684\u65b9\u5f0f\uff0c\u8fd8\u662f\u9700\u8981\u624b\u52a8\u53bb\u8f6c\u6362\u7c7b\u578b\uff0c\u5bf9\u4e8e\u4e60\u60ef\u4e86\u5176\u4ed6\u8bed\u8a00\u7684\u4eba\u4f30\u8ba1\u4e00\u65f6\u6709\u70b9\u96be\u4ee5\u9002\u5e94\u3002\u3002\u3002<\/p>\n
    \u4e0d\u8fc7\u542c\u8bf4 go2 \u6cdb\u578b\u8981\u51fa\u6765\u4e86                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : neoblackcap <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u6ca1\u6709\uff0c\u8981\u4e0d\u4f60\u5199\u4e00\u4e2a\u51fd\u6570\u5c01\u88c5\u4e00\u4e0b\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : bruce0 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u6ca1\u6709\u6cdb\u578b,\u73b0\u5728\u53ea\u80fd\u7528 interface \u8fd9\u4e2a,\u901a\u8fc7\u5f3a\u8f6c\u6765\u641e                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : kidtest <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u611f\u89c9\u7528 map + RWMutex \u65b9\u4fbf\u70b9\uff0c\u4e0d\u9700\u8981\u505a type assert                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : ViggoSite <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u4ece\u6765\u6ca1\u7528\u8fc7\u8fd9\u4e2a syncMap\uff0c\u4f7f\u7528\u573a\u666f\u662f\u5565 (\u2299\u02cd\u2299)                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : emeab <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 https:\/\/draveness.me\/whys-the-design-go-generics\/ \u8fd9\u76d8\u6211\u89c9\u5f97\u5199\u7684\u633a\u597d\u7684                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : wangritian <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @ViggoSite \u666e\u901a map \u5728\u591a\u7ebf\u7a0b\u540c\u65f6\u8bfb\u5199\u65f6\u4f1a\u62a5\u9519\uff0c\u53ea\u8bfb\u6ca1\u4e8b                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : ViggoSite <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @ViggoSite \u5662\uff0c\u611f\u8c22\u89e3\u7b54\uff0c\uff0c\u4e0d\u591f\u6211\u4e2a\u4eba\u8fde map \u597d\u50cf\u90fd\u5f88\u5c11\u7528 (\uffe3 m \uffe3\uff09                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : linvon <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u5efa\u8bae\u8fd8\u662f map \u52a0\u9501\u5427\uff0csyncMap \u8fd9\u79cd\u9ed1\u79d1\u6280\u7528\u8d77\u6765\u9ebb\u70e6\u6027\u80fd\u4e5f\u4e0d\u5982\u81ea\u5df1\u52a0\u9501                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"
    \u5173\u4e8e golang \u7684\u7c7b\u578b\u8f6c\u6362 \u8cc7…<\/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\/139976"}],"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=139976"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/139976\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=139976"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=139976"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=139976"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}