package util

import "strings"

// Title returns a string value with s[0] which has been convert into upper case that
// there are not empty input text
func Title(s string) string {
	if len(s) == 0 {
		return s
	}

	return strings.ToUpper(s[:1]) + s[1:]
}

// Untitle returns a string value with s[0] which has been convert into lower case that
// there are not empty input text
func Untitle(s string) string {
	if len(s) == 0 {
		return s
	}

	return strings.ToLower(s[:1]) + s[1:]
}

// Index returns the index where the item equal,it will return -1 if mismatched
func Index(slice []string, item string) int {
	for i := range slice {
		if slice[i] == item {
			return i
		}
	}

	return -1
}