From: Daniel Martin <martin@...>
Date: 2007-07-13T22:16:04+09:00
Subject: Re: Loop over an array that changes the elements

benjohn@fysh.org writes:

> As others and I have said, the map solution is good here.
>
>   numbers = numbers.map {|number| number*2}
>
> If you really wanted to change the array itself though, you could do this:
>
>   numbers.each_index {|i| numbers[i] = numbers[i] * 2}

Actually, as I think someone already posted, map! is probably the most
idiomatic way of doing this:

numbers.map! {|x| 2*x}

-- 
s=%q(  Daniel Martin -- martin@snowplow.org
       puts "s=%q(#{s})",s.to_a.last       )
       puts "s=%q(#{s})",s.to_a.last