1.Judge the beginning of a string

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

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)
fmt.Println(s1)
// 1-2