接口声明的区别 [英] Interface declaration difference

问题描述

作为一个初学者gopher，我很努力去理解之间的区别：

  m：= map [string] interface {} {} 
  

和

  m：= make（map [string] interface {}）
  

我试图找到一个解释，但找不到任何东西。

解决方案

两者是相同的，只是当使用<$ c

例如，你可以（可选地）指定你想要初始化的地图的大小。

$ b $ $ p $ m：= make（map [string] interface {}，10）


另外，当你像这样初始化地图文字时 -

  m：= map [string] interface {} {} 
  

然后在那里。在这种情况下，您已将其初始化为 nil 地图。如果您希望创建一个您希望能够在将来添加事物的地图（即 append ），则应该使用第一个方法或将其初始化为

  var m map [string] interface {} 
  

As a beginner gopher, i'm struggling to understand the difference between:

m := map[string]interface{}{}

and

m := make(map[string]interface{})

I tried to find an explanation, but couldn't find anything.

解决方案

Both are the same except that when using make, you can (of course optionally) specify the size of the map you're trying to initialize.

For e.g.,

m := make(map[string]interface{}, 10)

Also, when you initialize a map literal like this -

m := map[string]interface{}{}

you can add values to it then and there. In this case you have initialized it to a nil map. If you'd rather create a map in which you want to be able to add things in future (i.e. append), you should use either the first method or initialize it as

var m map[string]interface{}

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