From: Joe Cheng <code@...>
Date: 2005-08-02T03:02:36+09:00
Subject: Re: array in array, like include?

Ben wrote:

>Is there a function to checking to see if the elements of one array
>exist in another?
>
>a = [1,2,3,4,5]
>b = [1,4]
>
>a.include?(b) will only work if b is a string. I'd like to get a
>true/false if b exists in a.
>  
>
How about:
(a & b).length == b.length