From: Robert Klemme <shortcutter@...>
Date: 2011-04-21T20:18:03+09:00
Subject: Re: To Yield or Not to Yield: An Inferable Question

On Thu, Apr 21, 2011 at 11:47 AM, Brian Candler <b.candler@pobox.com> wrote:
> You are of course right in your analysis.
>
> My point is more that using "block_given?" in itself is API smell. It
> means you have one method which can be called in two different ways,
> with two different behaviours.

The standard and core libraries are full of those (File.open,
Enumerable methods...).

> The other main example in the core library (1.8.7+) is methods like
> 'each' which return an Enumerator if you don't pass a block. I don't
> like that either.

I find that utterly convenient.  For generating a series of values I
often use something like

17.times.map { ... }
42.times.to_a

I find that very elegant.  Brian, we are (or rather: Ruby is) not
loosing you, are we?  That would be sad.

Kind regards

robert

-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/