package isogram

import "strings"

const testVersion = 1

func IsIsogram(inp string) bool {
	used := make(map[rune]int)
	inp = strings.ToLower(inp)
	for _, l := range inp {
		switch l {
		case '-':
			continue
		case ' ':
			continue
		}
		if used[l] > 0 {
			return false
		}
		used[l] = used[l] + 1
	}
	return true
}