From: Robert Klemme <bob.news@...>
Date: 2004-03-19T17:59:36+09:00
Subject: Re: Can I stop each's iteration, and get the results so far?


"Sam Roberts" <sroberts@certicom.com> schrieb im Newsbeitrag
news:20040318181023.GA6610@certicom.com...
> Basically, I want to break from a find_all, and get the array of
> elements found so far. Is this possible?
>
> I tried this, no luck with find_all and collect, they return nil,
> instead of the array so far. Any suggestions on how to do this?

#inject is your friend:

> puts "all n between 100 and 200?"
>
> p every.find_all { |n| break if n > 200; n >= 100 && n <= 200 }

irb(main):076:0> every.inject([]) { |arr,n| break arr if n > 200; arr<<n
if n >= 100 && n <= 200; arr }
=> [102, 105, 108, 111, 114, 117, 120, 123, 126, 129, 132, 135, 138, 141,
144, 147, 150, 153, 156, 159, 162, 165, 168, 171, 174, 177, 180, 183, 186,
189, 192, 195, 198]

Regards

    robert