package utils

import "math/rand"

func InArray[T comparable](needle T, haystack []T) bool {
	for _, item := range haystack {
		if item == needle {
			return true
		}
	}
	return false
}

func NewRandNumber(length int) (string, error) {
	letters := []byte{'0', '1', '2', '3', '4', '5', '6', '7', '8', '9'}
	b := make([]byte, length)
	for i := range b {
		b[i] = letters[rand.Intn(len(letters))]
	}
	return string(b), nil
}