go-spew golang最強大的調試助手,沒有之一

go内置的fmt.sprintf已經很強大了,但是和spew比起來還是相形見绌,這裡來一個例子.

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)
}
           

對比一下,看看輸出有多美:

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