From: Rick DeNatale <rick.denatale@...>
Date: 2006-10-03T06:07:58+09:00
Subject: Re: Special variable within iterators to hold results?

On 10/2/06, Rick DeNatale <rick.denatale@gmail.com> wrote:
> On 10/2/06, Wes Gamble <weyus@att.net> 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?
>
> filter_columns = displayable_columns.inject([] {|

darn that itchy trigger finger.

displayable_columns.inject([]) {|result, field_array| result <<
[field_array[1], field_array[0]]}

or assuming that field_array contains two element arrays:

displayable_columns.inject([]) {|result, field_array| result <<
[field_array[1], field_array[0]]}


-- 
Rick DeNatale

My blog on Ruby
http://talklikeaduck.denhaven2.com/