From: Jake McArthur <jake.mcarthur@...>
Date: 2006-04-20T02:03:26+09:00
Subject: Re: Is there an "in" operator in ruby ?

There you go, ruining my moment of self-apparent ingenuity. :P

Anyway....

(@test & [*1..10]).each { |item| puts item }

- Jake

On Apr 19, 2006, at 11:49 AM, Bill Kelly wrote:

> From: "Jake McArthur" <jake.mcarthur@gmail.com>
>>
>> If Array was extended with some set theory, things like this would  
>> be  possible:
>> @test.intersect([1..10]).each { |item| puts item }
>
>>> x = [*1..5]
> => [1, 2, 3, 4, 5]
>
>>> y = [*3..7]
> => [3, 4, 5, 6, 7]
>
>>> x & y
> => [3, 4, 5]
>
>>> x | y
> => [1, 2, 3, 4, 5, 6, 7]
>
>>> x - y
> => [1, 2]
>
>>> y - x
> => [6, 7]
>
>
> Regards,
>
> Bill
>
>