func capitalize(s string) string {
	r, l := utf8.DecodeRuneInString(s)
	b := make([]byte, l)
	utf8.EncodeRune(b, unicode.ToTitle(r))
	return strings.Join([]string{string(b), s[l:]}, "")
}
func capitalize(s string) string {
	r, l := utf8.DecodeRuneInString(s)
	b := make([]byte, l)
	utf8.EncodeRune(b, unicode.ToTitle(r))
	return strings.Join([]string{string(b), s[l:]}, "")
}
func capitalize ( s string ) string { r , l := utf8 . DecodeRuneInString ( s ) b := make ( [ ] byte , l ) utf8 . EncodeRune ( b , unicode . ToTitle ( r ) ) return strings . Join ( [ ] string { string ( b ) , s [ l : ] } , " " ) }
// capitalize the first letter in s
capitalize the first letter in s