如何漂亮地打印变量 [英] How to pretty print variables

问题描述

Go中是否有Ruby的awesome_print之类的东西?

Is there something like Ruby's awesome_print in Go?

例如在Ruby中，您可以编写:

For example in Ruby you could write:

require 'ap'
x = {a:1,b:2} // also works for class
ap x

输出为:

{ 
  "a" => 1,
  "b" => 2
}

我能找到的最接近的东西是Printf("%#v", x)

closest thing that I could found is Printf("%#v", x)

推荐答案

如果您的目标是避免导入第三方程序包，则另一个选择是使用json.MarshalIndent :

If your goal is to avoid importing a third-party package, your other option is to use json.MarshalIndent:

x := map[string]interface{}{"a": 1, "b": 2}
b, err := json.MarshalIndent(x, "", "  ")
if err != nil {
    fmt.Println("error:", err)
}
fmt.Print(string(b))

输出:

{
    "a": 1,
    "b": 2
}

工作示例: http://play.golang.org/p/SNdn7DsBjy

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