funcsAO.go
func Capitalize(s string) string {
	return strings.ToUpper(s[0:1]) + strings.ToLower(s[1:])
}
func Capitalize(s string) string {
	return strings.ToUpper(s[0:1]) + strings.ToLower(s[1:])
}
// Capitalize uppercases the first char of s and lowercases the rest.