From: "Kroeger, Simon (ext)" <simon.kroeger.ext@...>
Date: 2006-06-07T23:57:11+09:00
Subject: Re: Getting rid of a while loop

 

> -----Original Message-----
> From: Robert Klemme [mailto:shortcutter@googlemail.com] 
> Sent: Wednesday, June 07, 2006 3:47 PM
> To: ruby-talk ML
> Subject: Re: Getting rid of a while loop
> 
> 2006/6/7, James Edward Gray II <james@grayproductions.net>:
> > On Jun 7, 2006, at 7:53 AM, Tait Pollard wrote:
> >
> > > I get a feeling there should be another way to make this happen
> > > without
> > > using a while loop, if anyone has any ideas that'd be great.
> > >
> > >     while question=file.gets
> > >       answer=file.gets
> > >       
> @question_array[counter]=Questions.new(question,answer, false)
> > >       counter+=1
> > >     end
> >
> > One way would be:
> >
> > require "enumerator"
> >
> > # ...
> >
> > file.each_slice(2) do |question, answer|
> >    @question_array << Questions.new(question, answer, false)
> > end
> 
> Thanks for leaving the inject version for me. :-)
> 
> @question_array = file.to_enum(:each_slice, 2).inject([]) do 
> |qa,(quest, answ)|
>   qa << Questions.new(quest, answ, false)
> end
> 
> :-))
> 
> robert

hehe, nice, with 1.8.4

@question_array = file.enum_slice(2).map{|q, a| Questions.new(q, a,
false)}

should be possible, isn't it?

cheers

Simon