Golang format string fmt Sprintf() string segmentation determines the beginning of the string

1.Judge the beginning of a string

package main
import (
func main() {
    myString := "www.topgoer.com"
    // Option 1: (Recommended)
    if strings.HasPrefix(myString, "www") {
        fmt.Println("Hello to you too")
    } else {

2.go String splitting

#Split string by spaces
arr := strings.Fields(s)

#Split string by string abc
arr := strings.Split(s,sep)

Format the string fmt. Printf()

s1 :=fmt.Sprintf("%v-%v",1,2)
// 1-2

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