Go语言中的分配运算符 [英] Assignment operator in Go language

问题描述

最近我正在玩Google的新编程语言转到

并想知道为什么赋值运算符：= 在等号前面有一个冒号 =
是否存在特定为什么这个语言的作者想要使用 name：=John而不是 name =John

解决方案

：= 符号既可以作为声明，也可以作为初始化。

  foo：=bar
  

相当于

  var foo =bar
  

为什么不使用 foo =bar就像在任何脚本语言中一样可能会问？

  foo =bar
 fooo =baz+ foo +baz //哎呀，是fooo一个新变量还是我的意思是'foo'？ 
  

Lately I was playing with google's new programming language Go

and was wondering why the assignment operator := has a colon in front of the equal sign = Is there a particular reason why the authors of the language wanted to use name := "John" instead of name = "John"

解决方案

The := notation serves both as a declaration and as initialization.

foo := "bar"

is equivalent to

var foo = "bar"

Why not using only foo = "bar" like in any scripting language, you may ask ? Well, that's to avoid typos.

foo = "bar"
fooo = "baz" + foo + "baz"   // Oops, is fooo a new variable or did I mean 'foo' ?

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