From: Brian Candler <b.candler@...>
Date: 2011-12-26T18:36:26+09:00
Subject: Re: How to Combo

Thomas Sawyer wrote in post #1038150:
> Easiest implementation of "some_method" in Ruby?
>
>      a = %w|a b|
>      b = %w|a x|
>      c = %w|x y|
>
>   some_method(a,b,c)
>
>   #=>
>
>    [ ["a", "a", "x"]
>      ["a", "a", "y"]
>      ["a", "x", "x"]
>      ["a", "x", "y"]
>      ["b", "a", "x"]
>      ["b", "a", "y"]
>      ["b", "x", "x"]
>      ["b", "x", "y"] ]
>
> Order doesn't really matter.

Does some_method only accept exactly three arguments?
Is each argument an array of exactly two elements?

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