func main(){
var p := fmt.Println
var s := strings
p("Contains: ",s.Contains("test","es")) //true
p("Count: ",s.Count("test","t")) //2
p("hasPrefix: ",s.HasPrefix("test","te")) //true
p("HasSuffix: ",s.HasSuffix("test","st")) //true
p("index: ",s.Index("test","e")) //1
p("Join; ",s.Join([]string{"a","b"},"-")) //a-b
p("Repeat: ",s.Repeat("a",5)) //aaaaa
p("Replace: ",s.Replace("foo","o","0",-1)) //f00
p("Replace: ",s.Replace("foo","o","0",1)) //f0o
p("Split: ",s.Split("a-b-c-d-e","-")) //[a,b,c,d,e]
p("ToLower: ",s.ToLower("TEST")) //test
p("ToUpper: ",s.ToUpper("test")) //TEST
p("Len: ",len("hello")) //5
p("Char: ","hello"[1]) // 101
}