Golang：以独特的方式打印字符串数组

I want a function func format(s []string) string such that for two string slices s1 and s2, if reflect.DeepEqual(s1, s2) == false, then format(s1) != format(s2).

If I simply use fmt.Sprint, slices ["a", "b", "c"] and ["a b", "c"] are all printed as [a b c], which is undesirable; and there is also the problem of string([]byte('4', 0, '2')) having the same representation as "42".

Use a format verb that shows the data structure, like %#v. In this case %q works well too because the primitive types are all strings.

fmt.Printf("%#v
", []string{"a", "b", "c"})
fmt.Printf("%#v
", []string{"a b", "c"})

// prints
// []string{"a", "b", "c"}
// []string{"a b", "c"}

You may use:

func format(s1, s2 []string) string {
    if reflect.DeepEqual(s1, s2) {
        return "%v
"
    }
    return "%q
"
}

Like this working sample (The Go Playground):

package main

import (
    "fmt"
    "reflect"
)

func main() {
    s1, s2 := []string{"a", "b", "c"}, []string{"a b", "c"}
    frmat := format(s1, s2)
    fmt.Printf(frmat, s1) // ["a" "b" "c"]
    fmt.Printf(frmat, s2) // ["a b" "c"]

    s2 = []string{"a", "b", "c"}
    frmat = format(s1, s2)
    fmt.Printf(frmat, s1) // ["a" "b" "c"]
    fmt.Printf(frmat, s2) // ["a b" "c"]
}

func format(s1, s2 []string) string {
    if reflect.DeepEqual(s1, s2) {
        return "%v
"
    }
    return "%q
"
}

output:

["a" "b" "c"]
["a b" "c"]
[a b c]
[a b c]