{"id":7930,"date":"2023-01-28T13:47:48","date_gmt":"2023-01-28T05:47:48","guid":{"rendered":"https:\/\/egonlin.com\/?p=7930"},"modified":"2023-01-28T13:47:48","modified_gmt":"2023-01-28T05:47:48","slug":"19-%e5%a4%8d%e5%90%88%e6%95%b0%e6%8d%ae%e7%b1%bb%e5%9e%8b%e4%b9%8bmap","status":"publish","type":"post","link":"https:\/\/egonlin.com\/?p=7930","title":{"rendered":"19 \u590d\u5408\u6570\u636e\u7c7b\u578b\u4e4bmap"},"content":{"rendered":"<p>[TOC]<\/p>\n<h1>\u590d\u5408\u6570\u636e\u7c7b\u578b\u4e4b\u5b57\u5178Map<\/h1>\n<h2>\u4e00 Map\u7c7b\u578b\u4ecb\u7ecd<\/h2>\n<p>Map\u7c7b\u578b\u53c8\u53ef\u4ee5\u79f0\u4e4b\u4e3a\u5b57\u5178\u7c7b\u578b\uff0c\u662f\u4e00\u79cd\u65e0\u5e8f\u7684\u3001\u57fa\u4e8ekey:value\u7684\u6570\u636e\u7ed3\u6784<\/p>\n<p>\u5b9a\u4e49\u8bed\u6cd5\u5982\u4e0b<\/p>\n<pre><code class=\"language-go\">var \u53d8\u91cf\u540d map[Key\u7684\u7c7b\u578b]Value\u7684\u7c7b\u578b<\/code><\/pre>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff1a<\/p>\n<p>1\u3001map\u4e2d\u6240\u6709\u7684Key\u90fd\u5fc5\u987b\u662f\u76f8\u540c\u7684\u7c7b\u578b\uff0c\u6240\u6709\u7684value\u4e5f\u5fc5\u987b\u90fd\u662f\u76f8\u540c\u7684\u7c7b\u578b\uff0c\u4f46\u662fkey\u4e0evalue\u4e4b\u95f4\u53ef\u4ee5\u662f\u4e0d\u540c\u7684\u7c7b\u578b  <\/p>\n<p>2\u3001\u5173\u4e8ekey\u7684\u7c7b\u578b\uff1aKey\u5fc5\u987b\u662f\u53ef\u4ee5\u4e0e\u975enil\u503c\u8fdb\u884c\u76f8\u7b49\u6027\u5224\u65ad\u7684\u7c7b\u578b\uff08\u6240\u6709\u7684\u503c\u7c7b\u578b\u90fd\u652f\u6301\u76f8\u7b49\u6027\u5224\u65ad\uff0c\u6240\u6709\u7684\u5f15\u7528\u7c7b\u578b\u53ea\u80fd\u4e0enil\u503c\u5224\u65ad\uff09\uff0c\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4e0ekey\u7684\u76f8\u7b49\u6027\u5224\u65ad\u6765\u5224\u5b9akey\u662f\u5426\u5b58\u5728\u3002\u867d\u7136\u6d6e\u70b9\u7c7b\u578b\u4e5f\u652f\u6301\u4e0e\u975enil\u503c\u8fdb\u884c\u76f8\u7b49\u6027\u8fd0\u7b97\uff0c\u4f46\u662f\u4e0d\u5efa\u8bae\u7528\u6d6e\u70b9\u578b\u4f5c\u4e3aKey\uff0c\u56e0\u4e3a\u6d6e\u70b9\u6570\u5b58\u5728\u975e\u6570NaN,\u800cNaN\u4e0e\u4efb\u4f55\u6d6e\u70b9\u6570\u90fd\u4e0d\u76f8\u7b49\uff0c\u8fd9\u4fbf\u5931\u53bb\u4e86\u610f\u4e49\u3002<\/p>\n<p>3\u3001\u5173\u4e8evalue\u7684\u7c7b\u578b\uff1a\u53ef\u4ee5\u662f\u4efb\u610f\u7c7b\u578b\u3002<\/p>\n<h2>\u4e8c \u58f0\u660e\u4e0e\u521d\u59cb\u5316<\/h2>\n<p>\u56e0\u4e3amap\u7c7b\u578b\u4e5f\u5c5e\u4e8e\u590d\u5408\u7c7b\u578b\u4e2d\u7684\u5f15\u7528\u7c7b\u578b\uff0c\u6240\u4ee5<\/p>\n<p>\uff081\uff09\u76f4\u63a5\u58f0\u660e\u4e00\u4e2amap\u7c7b\u578b\uff0c\u96f6\u503c\u4e3anil\uff08\u5f15\u7528\u7c7b\u578b\u7684\u96f6\u503c\u90fd\u4e3anil\uff09\uff0cnil\u4ee3\u8868\u7a7a\u3001\u6ca1\u6709\u5206\u914d\u5185\u5b58\u3002<\/p>\n<pre><code class=\"language-go\">var m map[string]int\nfmt.Println(m) \/\/ map[]\n\nfmt.Println(m==nil) \/\/ true\nm[&quot;k1&quot;]=111 \/\/ panic\u5f02\u5e38: \u56e0\u4e3a\u6ca1\u6709\u5f00\u8f9f\u5185\u5b58\u7a7a\u95f4<\/code><\/pre>\n<p>\uff082\uff09\u521d\u59cb\u5316\u5207\u7247\u7c7b\u578b\u7684\u65b9\u5f0f\u6709\u4e24\u79cd\uff08\u4e0e\u5207\u7247\u7684\u521d\u59cb\u5316\u90fd\u4e00\u6837\uff09<\/p>\n<p>\u65b9\u5f0f\u4e00\uff1a\u5148\u8c03\u7528make()\u51fd\u5f00\u8f9f\u7a7a\u95f4\uff0c\u7136\u540e\u518d\u585e\u503c<\/p>\n<pre><code class=\"language-go\">var m = make(map[string]int)\nfmt.Println(m) \/\/ map[]\nfmt.Println(m==nil) \/\/ false\n\nm[&quot;k1&quot;]=111\nfmt.Println(m) \/\/ map[k1:111]<\/code><\/pre>\n<p>\u65b9\u5f0f\u4e8c\uff1a\u4e00\u6b65\u5230\u4f4d\u5f0f\uff0c\u5373\u8d4b\u4e00\u4e2a\u5b8c\u6574\u7684\u503c\uff0c\u8be5\u65b9\u5f0f\u7b49\u540c\u4e8emake\u5b8c\u6bd5\u4e4b\u540e\u518d\u585e\u503c\uff0c\u5982\u4e0b\u6240\u793a<\/p>\n<pre><code class=\"language-go\">scoreMap:=map[string]int{\n    &quot;egon&quot;:99,\n    &quot;\u94c1\u86cb&quot;:100,\n    &quot;\u94dc\u86cb&quot;:88,\n}\n\n\/\/ \u4e0a\u8ff0\u4ee3\u7801\u7b49\u540c\u4e8e\nscoreMap := make(map[string]int)\nscoreMap[&quot;egon&quot;] = 99\nscoreMap[&quot;\u94c1\u86cb&quot;] = 100\nscoreMap[&quot;\u94dc\u86cb&quot;] = 88\n\nfmt.Println(scoreMap[&quot;egon&quot;]) \/\/ 99<\/code><\/pre>\n<p>\u200b    \u5ef6\u4f38\uff1a\u6211\u4eec\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u7a7a\u7684map\uff1a\u8868\u8fbe\u5f0f\u662f<code>map[string]int{}<\/code><\/p>\n<pre><code class=\"language-go\">var scoreMap = map[string]int{}\nfmt.Println(scoreMap == nil) \/\/ false\n\nscoreMap[&quot;egon&quot;] = 99\nfmt.Println(scoreMap[&quot;egon&quot;]) \/\/ 99<\/code><\/pre>\n<h2>\u4e09 \u57fa\u672c\u64cd\u4f5c<\/h2>\n<h3>3.1 \u589e\u5220\u6539\u67e5<\/h3>\n<pre><code class=\"language-go\">var m = make(map[string]string)\n\/\/ \u589e\u52a0\nm[&quot;name&quot;]=&quot;egon&quot;\nm[&quot;age&quot;]=&quot;18&quot;\nm[&quot;gender&quot;]=&quot;male&quot;\nfmt.Println(m) \/\/ map[age:18 gender:male name:egon]\n\u4e86\u89e3\uff1a\u5f53\u65b0\u589e\u5143\u7d20\u65f6\uff0cmap\u4e5f\u4f1a\u968f\u7740\u5143\u7d20\u6570\u91cf\u7684\u589e\u957f\u800c\u91cd\u65b0\u5206\u914d\u66f4\u5927\u7684\u5185\u5b58\u7a7a\u95f4\uff0c\u5373Go\u4e2dmap\u5b9e\u73b0\u4e2d\u5143\u7d20\u7684\u5730\u5740\u662f\u53d8\u5316\u7684\uff0c\n\n\/\/ \u5220\u9664\ndelete(m,&quot;gender&quot;)\nfmt.Println(m) \/\/ map[age:18 name:egon]\ndelete(m,&quot;kkk&quot;) \/\/ \u5373\u4f7fkey\u4e0d\u5728map\u4e2d\u4e5f\u6ca1\u6709\u5173\u7cfb\n\n\/\/ \u6539\nm[&quot;name&quot;]=&quot;Egon&quot;\nfmt.Println(m)\n\n\/\/ \u67e5\nfmt.Println(m[&quot;name&quot;]) \/\/ Egon\nfmt.Println(m[&quot;gender&quot;]) \/\/ \u82e5key\u4e0d\u5b58\u5728\u5219\u8fd4\u56devalue\u5bf9\u5e94\u7c7b\u578b\u7684\u96f6\u503c\n\n\/\/ ps\uff1a\u9488\u5bf9\u67e5\u64cd\u4f5c\uff0c\u56e0\u4e3a\u5f53key\u4e0d\u5b58\u5728\u65f6\u8fd4\u56de\u7684\u662fvalue\u5bf9\u5e94\u7c7b\u578b\u7684\u96f6\u503c\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u8fd9\u4e48\u505a\nvar ages = make(map[string]int)\nages[&quot;egon&quot;] += 1 \/\/ ages[&quot;egon&quot;] = ages[&quot;egon&quot;] + 1\nfmt.Println(ages) \/\/ 1\n\n\u6216\u8005\nages[&quot;egon&quot;]++\nfmt.Println(ages) \/\/ 2<\/code><\/pre>\n<h3>3.2 \u5224\u65adkey\u662f\u5426\u5b58\u5728\u4e8emap\u4e2d<\/h3>\n<p>\u9488\u5bf9\u64cd\u4f5cm[key]\uff0c\u5f53key\u4e0d\u5b58\u5728\u65f6,\u8fd4\u56de\u7684\u662fvalue\u5bf9\u5e94\u7c7b\u578b\u7684\u96f6\u503c\uff0c\u800c\u6781\u6709\u53ef\u80fd\u51fa\u73b0key\u5b58\u5728\uff0c\u4f46\u8be5key\u5bf9\u5e94\u7684\u503c\u4e0e\u5176\u96f6\u503c\u662f\u76f8\u7b49\u7684\uff0c\u5982\u4e0b\u6240\u793a<\/p>\n<pre><code class=\"language-go\">var ages = make(map[string]int)\nages[&quot;\u5f20\u4e09&quot;]=0\nfmt.Println(ages[&quot;\u5f20\u4e09&quot;]) \/\/ \u952e&quot;\u5f20\u4e09&quot;\u5b58\u5728\uff0c\u53d6\u5230\u503c\u4e3a0\nfmt.Println(ages[&quot;egon&quot;]) \/\/ \u952e&quot;egon&quot;\u4e0d\u5b58\u5728\uff0c\u53d6\u5230\u503c\u5bf9\u5e94\u7c7b\u578b\u7684\u96f6\u503c\u540c\u6837\u4e3a0<\/code><\/pre>\n<p>\u6240\u4ee5\u6211\u4eec\u65e0\u6cd5\u901a\u8fc7m[key]\u53d6\u5230\u7684\u503c\u4f5c\u4e3a\u5224\u65ad\u4f9d\u636e\u6765\u5224\u5b9akey\u662f\u5426\u5b58\u5728\uff0c\u9700\u8981\u8fd9\u4e48\u505a<\/p>\n<pre><code class=\"language-go\">age1,ok:=ages[&quot;\u5f20\u4e09&quot;]\nfmt.Println(age1,ok) \/\/ 0 true\uff0ctrue\u4ee3\u8868key\u5b58\u5728\uff0c0\u5c31\u662f\u53d6\u5230\u7684\u503c\n\nage2,ok:=ages[&quot;egon&quot;]\nfmt.Println(age2,ok) \/\/ 0 false\uff0cfalse\u4ee3\u8868key\u4e0d\u5b58\u5728\uff0c0\u662f\u503c\u5bf9\u5e94\u7c7b\u578b\u7684\u96f6\u503c\n\nif ok {\n    fmt.Println(age2)\n} else {\n    fmt.Println(&quot;\u67e5\u65e0\u6b64\u4eba&quot;)\n}<\/code><\/pre>\n<h3>3.3 \u4e8c\u5143\u8fd0\u7b97<\/h3>\n<p>\uff081\uff09map\u4e0eslice\u4e00\u6837\uff0c\u540c\u5c5e\u4e8e\u590d\u5408\u7c7b\u578b\u4e2d\u7684\u5f15\u7528\u7c7b\u578b\uff0c\u590d\u5408\u7c7b\u578b\u4e2d\u7684\u5f15\u7528\u7c7b\u578b\u4e0d\u652f\u6301\u76f4\u63a5\u8fdb\u884c\u76f8\u7b49\u6027\u5224\u65ad\uff0c\u53ea\u80fd\u4e0enil\u76f4\u63a5\u8fdb\u884c\u76f8\u7b49\u6027\u5224\u65ad\uff0c<\/p>\n<p>\u82e5\u8981\u5224\u65ad\u4e24\u4e2amap\u662f\u5426\u5305\u542b\u76f8\u540c\u7684key\u548cvalue\uff0c\u6211\u4eec\u9700\u8981\u81ea\u5df1\u5faa\u73af\u53d6\u51famap\u4e2d\u7684key\u548cvalue\u9010\u4e00\u8fdb\u884c\u6bd4\u8f83\uff0c\u5982\u4e0b\u6240\u793a<\/p>\n<pre><code class=\"language-go\">func equal(x, y map[string]int) bool {\n    if len(x) != len(y) {\n        return false \/\/ \u4e24\u4e2amap\u7c7b\u578b\u7684\u957f\u5ea6\u4e0d\u4e00\u6837\u76f4\u63a5\u8fd4\u56defalse\uff0c\u4ee3\u8868\u4e0d\u76f8\u7b49\n    }\n    for k, xv := range x {\n        if yv, ok := y[k]; !ok || yv != xv {\n            return false \/\/ \/\/ \u4e24\u4e2amap\u7c7b\u578b\u4f46\u51e1\u6709\u4e00\u7ec4\u5bf9\u5e94key\u4e0evalue\u4e0d\u76f8\u7b49\u5c31\u8fd4\u56defalse\uff0c\u4ee3\u8868\u4e0d\u76f8\u7b49\n        }\n    }\n    return true \/\/ \u5982\u679c\u80fd\u591f\u6267\u884c\u8be5\u884c\u4ee3\u7801\uff0c\u8fd4\u56detrue\uff0c\u5219\u4ee3\u8868\u4e24\u4e2amap\u662f\u76f8\u7b49\u7684\uff0c\u5373\u6240\u6709key\u4e0evalue\u90fd\u4e00\u6837\n}<\/code><\/pre>\n<p>\u6ce8\u610f\u6ce8\u610f\u6ce8\u610f\uff1a\u6211\u4eec\u4e0d\u5e94\u8be5\u7b80\u5355\u5730\u7528xv != y[k]\u5224\u65ad<\/p>\n<pre><code class=\"language-go\">package main\n\nimport (\n    &quot;fmt&quot;\n)\n\nfunc equal(x, y map[string]int) bool {\n    if len(x) != len(y) {\n        return false\n    }\n    for k, xv := range x {\n        if xv != y[k] {\n            return false\n        }\n    }\n    return true\n}\n\nfunc main() {\n    res := equal(map[string]int{&quot;A&quot;: 0}, map[string]int{&quot;B&quot;: 0})\n    fmt.Println(res) \/\/ true\n}<\/code><\/pre>\n<h3>3.4 \u904d\u5386map<\/h3>\n<p>\uff081\uff09Go\u8bed\u8a00\u4e2d\u4f7f\u7528<code>for range<\/code>\u904d\u5386map<\/p>\n<pre><code class=\"language-go\">var ages = make(map[string]int)\nages[&quot;egon&quot;] = 18\nages[&quot;\u5f20\u4e09&quot;] = 19\nages[&quot;\u674e\u56db&quot;] = 20\n\n\/\/ 1\u3001\u5faa\u73af\u8bfb\u53d6k\u548cv\nfor k,v := range ages {\n    fmt.Println(k,v)\n}\n\n\/\/ 2\u3001\u5faa\u73af\u53ea\u8bfb\u53d6k\uff0c\u4e0b\u8ff0\u4e24\u79cd\u65b9\u5f0f\u90fd\u53ef\u4ee5\nfor k,_ := range ages {\n    fmt.Println(k,v)\n}\n\nfor k := range ages {\n    fmt.Println(k)\n}\n\n\/\/ 3\u3001\u5faa\u73af\u53ea\u8bfb\u53d6v\nfor _,v := range ages {\n    fmt.Println(v)\n}<\/code><\/pre>\n<p>\uff082\uff09\u904d\u5386map\u65f6\u7684\u5143\u7d20\u987a\u5e8f\u4e0e\u6dfb\u52a0\u952e\u503c\u5bf9\u7684\u987a\u5e8f\u65e0\u5173\uff0c\u82e5\u60f3\u6309\u7167\u6307\u5b9a\u987a\u5e8f\u904dmap\uff0c\u9700\u8981\u5c06map\u4e2d\u7684key\u5b58\u5165\u5207\u7247\uff0c\u7136\u540e\u5bf9\u5207\u7247\u8fdb\u884c\u6392\u5e8f\u540e\uff0c\u4f9d\u636e\u5207\u7247\u4e2d\u6392\u5e8f\u597d\u7684key\u4f9d\u6b21\u53d6map\u4e2d\u7684value<\/p>\n<pre><code class=\"language-go\">var ages = make(map[string]int) \nages[&quot;egon&quot;] = 18\nages[&quot;\u5f20\u4e09&quot;] = 19\nages[&quot;\u674e\u56db&quot;] = 20\nages[&quot;\u738b\u4e94&quot;] = 21\nages[&quot;\u725b\u4f70&quot;] = 22\n\n\/\/ 1\u3001\u65e0\u5e8f\u904d\u5386\nfor k, v := range ages {\n    fmt.Println(k, v)\n}\n\n\/\/ 2\u3001\u6709\u5e8f\u904d\u5386\nvar keys []string\n\nfor k := range ages {\n    keys = append(keys, k)\n}\nsort.Strings(keys) \/\/ Strings\u51fd\u6570\u63a5\u6536\u7684\u53c2\u6570\u662f\u5207\u7247\u7c7b\u578b\uff0c\u8fd9\u4e5f\u662f\u6211\u4eec\u628aage\u4e2d\u7684key\u653e\u5165\u5207\u7247\u7c7b\u578b\u4e2d\u7684\u539f\u56e0\n\nfor _, k := range keys {\n    fmt.Printf(&quot;%s\\t%d\\n&quot;, k, ages[k])\n}\n\n\/\/ ps\uff1a\n\u56e0\u4e3a\u6211\u4eec\u4e00\u5f00\u59cb\u5c31\u77e5\u9053keys\u7684\u6700\u7ec8\u5927\u5c0f\uff0c\u56e0\u6b64\u7ed9\u5207\u7247keys\u5206\u914d\u4e00\u4e2a\u5408\u9002\u7684\u5927\u5c0f\u5c06\u4f1a\u66f4\u6709\u6548\uff0c\u5982\u4e0b\u6240\u793a\nkeys := make([]string, 0, len(ages)) \/\/ \u5bb9\u91cf\u521a\u597d\u53ef\u4ee5\u653e\u4e0bmap\u4e2d\u5168\u90e8\u7684key\uff1a<\/code><\/pre>\n<h3>3.5 go\u7981\u6b62\u5bf9map\u5143\u7d20\u53d6\u5730\u5740<\/h3>\n<p>\u5bf9\u6bd4\u540c\u4e3a\u590d\u5408\u7c7b\u578b\u4e2d\u7684\u5207\u7247\u6765\u770b\uff0c\u6211\u4eec\u53ef\u4ee5\u53d6\u5207\u7247\u5143\u7d20\u7684\u5730\u5740<\/p>\n<pre><code class=\"language-go\">numSlice:=[]int{111,222,333}\nfmt.Println(&amp;numSlice[0]) \/\/ 0xc00001e0c0<\/code><\/pre>\n<p>\u4f46\u662f\u6211\u4eec\u4e0d\u80fd\u53d6map\u4e2dvalue\u7684\u5730\u5740<\/p>\n<pre><code class=\"language-go\">var m = make(map[string]int)\nm[&quot;k1&quot;]=111\nfmt.Println(&amp;m[&quot;k1&quot;]) \/\/ \u5f02\u5e38cannot take the address of m[&quot;k1&quot;]<\/code><\/pre>\n<p>\u4e86\u89e3\uff1amap\u4e2d\u7684\u5143\u7d20\u4e3a\u4f55\u4e0d\u53ef\u4ee5\u88ab\u53d6\u5730\u5740<\/p>\n<pre><code class=\"language-Go\">\u5f53\u6211\u4eec\u6839\u636ekey\u53bb\u53d6map\u7c7b\u578b\u4e2d\u7684\u5143\u7d20\u503c\u65f6\u3002\u82e5key\u4e0d\u5b58\u5728\u5219\u8fd4\u56de\u96f6\u503c\uff0c\u800c\u96f6\u503c\u662f\u5e38\u91cf\uff0c\u6211\u4eec\u65e0\u6cd5\u53d6\u5e38\u91cf\u7684\u5730\u5740<\/code><\/pre>\n<h2>\u56db \u5728\u51fd\u6570\u53c2\u6570\u4e2d\u4f20\u9012<\/h2>\n<p>map\u5728\u51fd\u6570\u53c2\u6570\u4e2d\u7684\u4f20\u9012\u4e0e\u5207\u7247\u4e00\u6837\u90fd\u662f\u5c5e\u4e8e\u201c\u5f15\u7528\u4f20\u9012\u201d\u3002<\/p>\n<p>\u5185\u7f6e\u7684\u5f15\u7528\u7c7b\u578b\uff0c\u5982 slice\uff0cmap\uff0cinterface\uff0cchannel\uff0c\u8fd9\u4e9b\u7c7b\u578b\u6bd4\u8f83\u7279\u6b8a\uff0c\u58f0\u660e\u4ed6\u4eec\u7684\u65f6\u5019\uff0c\u5b9e\u9645\u4e0a\u662f\u521b\u5efa\u4e86\u4e00\u4e2a header\uff0c \u5bf9\u4e8e\u4ed6\u4eec\u4e5f\u662f\u76f4\u63a5\u5b9a\u4e49\u503c\u63a5\u6536\u8005\u7c7b\u578b\u7684\u65b9\u6cd5\u3002\u8fd9\u6837\uff0c\u8c03\u7528\u51fd\u6570\u65f6\uff0c\u662f\u76f4\u63a5 copy \u4e86\u8fd9\u4e9b\u7c7b\u578b\u7684 header\uff0c\u800c header \u672c\u8eab\u5c31\u662f\u4e3a\u590d\u5236\u8bbe\u8ba1\u7684\u3002<\/p>\n<h2>\u4e94 \u7ec3\u4e60<\/h2>\n<p>\u7edf\u8ba1\u4e00\u4e2a\u5b57\u7b26\u4e32\u4e2d\u5355\u8bcd\u51fa\u73b0\u7684\u6b21\u6570<\/p>\n<pre><code class=\"language-go\">var s=&quot;Love me, Love my dog&quot;\n\/\/ 1\u3001\u5b9a\u4e49\u4e00\u4e2amap[string]int\nvar wordCount=make(map[string]int,10)\n\/\/ 2\u3001\u77e5\u9053\u90fd\u6709\u54ea\u4e9b\u5355\u8bcd\nwords:=strings.Split(s,&quot; &quot;)\n\/\/ 3\u3001\u904d\u5386\u5355\u8bcd\u505a\u7edf\u8ba1\nfor _,word:=range words{\n    wordCount[word]++\n}\nfmt.Println(wordCount) \/\/ map[Love:2 dog:1 me,:1 my:1]<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>[TOC] \u590d\u5408\u6570\u636e\u7c7b\u578b\u4e4b\u5b57\u5178Map \u4e00 Map\u7c7b\u578b\u4ecb\u7ecd Map\u7c7b\u578b\u53c8\u53ef\u4ee5\u79f0\u4e4b\u4e3a\u5b57\u5178\u7c7b\u578b\uff0c\u662f\u4e00\u79cd\u65e0\u5e8f\u7684\u3001\u57fa\u4e8ek [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[4,449],"tags":[],"_links":{"self":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/7930"}],"collection":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7930"}],"version-history":[{"count":0,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/7930\/revisions"}],"wp:attachment":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7930"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7930"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7930"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}