How to ignore extra fields for fmt.Sprintf

Question

I have a Golang program that reads a string parameter from command line and passes it to the fmt.Sprintf function. Let\'s say tmp_str is the target string from command line.

Answer 1

I agree with Volker's answer, but you could check your input string:

package main

import (
    "fmt"
    "strings"
)

func main() {
    tmp_str := "hello %s"

    res := tmp_str
    if strings.Count(tmp_str, "%s") == 1 {
        res = fmt.Sprintf(tmp_str, "world")
    }
    fmt.Println(res)
}