在Go中初始化空字符串的惯用方式

Question

In Go you can initialise an empty string (in a function) in the following ways:

var a string
var b = ""
c := ""

As far as I know, each statement is semantically identical. Is one of them more idiomatic than the others?

Answer 1

You should choose whichever makes the code clearer. If the zero value will actually be used (e.g. when you start with an empty string and concatenate others to it), it's probably clearest to use the := form. If you are just declaring the variable, and will be assigning it a different value later, use var.