From: Timothy Goddard <interfecus@...>
Date: 2006-10-04T08:50:19+09:00
Subject: Re: Special variable within iterators to hold results?

Firstly, you shouldn't capitalize your variables like that. Ruby will
treat any variable with a capital first letter as a constant - it will
behave differently.

A better implementation would be:

filter_columns = displayable_columns.map {|field_array|
[field_array[1], field_array[0]]

or

filter_columns = displayable_columns.map {|field_array|
field_array[0,2].reverse]

Wes Gamble wrote:
> I have this:
>
> FILTER_COLUMNS = Array.new
> DISPLAYABLE_COLUMNS.each do |field_array|
>   FILTER_COLUMNS << [ field_array[1], field_array[0] ]
> end
>
> Is there any way to write this so that it could look something like:
>
> FILTER_COLUMNS = DISPLAYABLE_COLUMNS.each do |field_array|
>   ??? << [ field_array[1], field_array[0] ]
> end
>
> so that I don't have to bother initializing FILTER_COLUMNS - is there
> some special variable that holds the intermediate result of the iterator
> body?
>
> Or perhaps an appropriate call to collect?
> 
> Thanks,
> Wes
> 
> -- 
> Posted via http://www.ruby-forum.com/.