From: YANAGAWA Kazuhisa <kjana@...4lab.to>
Date: 2006-05-19T01:19:32+09:00
Subject: Re: Enumerable#collect and #select best practices

In Message-Id: <6DC013B2-BEC1-4081-8EC4-EA2767B595C4@gmail.com>
Logan Capaldo <logancapaldo@gmail.com> writes:

> I don't think you should use #compact. What if #a_method happens to
> return nil as a result? Also rescuing NoMethodError, is risky if you
> have a bug inside #a_method.

And if your block given to collect is fairly complex, needless work
may affects scalability of code.  Ie. If the number of items will be selected
are small and a source array is very huge --- say, 100 : 10,000,000
--- useless 9,999,900 invocations are avoided if "select then collect"
approach.


-- 
kjana@dm4lab.to                                           May 19, 2006
Translators, traitors.