trim 除掉一个字串中的字头或字尾 不可打印字符 二重循环

 

二重循环

 

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func trimNonPrintingCharacters(s string) string {     l := []string{"\t", "\n", "\r", " "}     for _, v := range l {         s = strings.Trim(s, v)         for _, u := range l {             s = strings.Trim(s, u)         }     }     return s }

　　

 

 

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func Test_trimNonPrintingCharacters(t *testing.T) {     type args struct {         s string     }     s1 := `     name string     args args`     s1_ := `    name string     args args`     tests := []struct {         name string         args args         want string     }{         // TODO: Add test cases.         {name: "1", args: args{s: s1}, want: s1_},     }     for _, tt := range tests {         t.Run(tt.name, func(t *testing.T) {             if got := trimNonPrintingCharacters(tt.args.s); got != tt.want {                 t.Errorf("trimNonPrintingCharacters() = %v, want %v", got, tt.want)             }         })     } }

　　

 

 

 

 

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