package main import ( "fmt" "strings" ) func main() { var str string = "This is an example of a string" fmt.Printf("T/F? Does the string \"%s\" have prefix %s? ", str, "Th") fmt.Printf("%t\n", strings.HasPrefix(str, "Th")) } // Output: T/F? Does the string "This is an example of a string" have prefix Th? true