From: ES <ruby-ml@...>
Date: 2005-10-19T13:42:42+09:00
Subject: Re: Unit testing an each function

ES wrote:
> Kevin Ballard wrote:
> 
>> James Edward Gray II wrote:
>>
>>> Hmm, isn't what you wrote an automatic Generator class?  (See
>>> standard library.)
>>
>>
>>
>> Not really. Generator basically gives you external iterators which you
>> can access element by element, so you can do things like iterate over 2
>> enumerables in step. What I wrote is basically just a convenience for
>> applying a method call to all the elements in a single enumerable.
>> After all,
>>
>>   %w{a long list of words}.collect.length
>>
>> is the same thing as
>>
>>   %w{a long list of words}.collect { |item| item.length}
>>
>> but easier to read.
>>
>>
>>> Yeah, I don't have a problem with it.  I'm probably not the kind of
>>> guy who would using it, but if you and others would, go for it.  I
>>> love sharing.  :)
>>
>>
>>
>> Ok, then I'll probably package it up tomorrow.
> 
> 
> Please do! This idiom is an improvement over dbrock's foo.each {.succ}
> which still required a preprocessor.

Whoops, sent too soon! I was going to continue to say that while this is
nice, for clarity of expression you might want to state it this way:

   %w{a long list of words}.collect :length

E