英文:
Interface declaration difference
问题
作为一个初学者的gopher，我很难理解以下两者之间的区别：
m := map[string]interface{}{}
和
m := make(map[string]interface{})
我尝试找到解释，但没有找到任何相关的内容。
英文:
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.
答案1
得分: 0
两者基本相同，只是在使用make时，你可以（当然是可选的）指定要初始化的地图的大小。
例如，
m := make(map[string]interface{}, 10)
此外，当你像这样初始化一个地图字面量时 -
m := map[string]interface{}{}
你可以立即在其中添加值。在这种情况下，你将其初始化为一个nil地图。如果你希望创建一个可以在将来添加东西的地图（即append），你应该使用第一种方法或将其初始化为
var m map[string]interface{}
英文:
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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