go-spew golang最强大的调试助手,没有之一

go内置的fmt.sprintf已经很强大了,但是和spew比起来还是相形见绌,这里来一个例子.

import (
    "fmt"

    "github.com/davecgh/go-spew/spew"
)

func main() {
    scs := spew.ConfigState{Indent: "\t"}

    // Output using the ConfigState instance.
    v := map[string]int{"one": 1}
    fmt.Printf("v: %v\n", v)
    scs.Dump(v)
}

对比一下,看看输出有多美:

v: map[one:1]
(map[string]int) (len=1) {
    (string) (len=3) "one": (int) 1
}