package main
import (
"fmt"
"strings"
)
func main() {
s := "go java c python c++"
fmt.Println(strings.Contains(s, "go"))
fmt.Println(strings.Contains(s, "php"))
fmt.Println(strings.Contains(s, ""))
fmt.Println(strings.Contains(s, "py"))
fmt.Println(strings.Contains(s, " "))
fmt.Println(strings.Contains(s, " "))
}
/*
run:
true
false
true
true
false
true
*/