package main

import (
	"strings"
)

type stringSlice []string

func (s stringSlice) has(value string) bool {
	for _, v := range s {
		if v == value {
			return true
		}
	}
	return false
}

func urlize(str string) string {
	newStr := ""
	for _, c := range strings.Split(strings.ToLower(str), "") {
		if c >= "a" && c <= "z" || c >= "A" && c <= "Z" || c >= "0" && c <= "9" {
			newStr += c
		} else if c == " " {
			newStr += "-"
		}
	}
	return newStr
}

func firstSentences(value string, count int) string {
	for i := range value {
		if value[i] == '.' || value[i] == '!' || value[i] == '?' {
			count -= 1
			if count == 0 && i < len(value) {
				return value[0 : i+1]
			}
		}
	}
	return value
}