From: sto.mar@...
Date: 2013-02-25T03:19:52+09:00
Subject: Re: How should I print only the last combination when using Array#combination(n) ?

Am 24.02.2013 17:11, schrieb Love U Ruby:
> see the below code :
>
>>> a = [1,2,3,4,5]
> => [1, 2, 3, 4, 5]
>>> a.combination(3){|arr| p arr}
> [1, 2, 3]
> [1, 2, 4]
> [1, 2, 5]
> [1, 3, 4]
> [1, 3, 5]
> [1, 4, 5]
> [2, 3, 4]
> [2, 3, 5]
> [2, 4, 5]
> [3, 4, 5]
> => [1, 2, 3, 4, 5]
>
> Here,say I want to see the output only(without any fancy I write it
> here,just to get to see the trick):
>
> [1, 3, 5] #~~ means 5th combination
> [2, 3, 5] #~~ means 8th combination
>
> But yes only with block.

Why???
What are you trying to do?
Why do you insist on using a block?
What is your use case?

We can give better advice when you tell us what you are trying
to accomplish. Using a block might not be the most effective solution.


-- 
<https://github.com/stomar/>