From: "Simon Kröger" <SimonKroeger@...>
Date: 2007-08-15T05:19:58+09:00
Subject: Re: Does an Array#apply make any sense at all?

nikolai.weibull@gmail.com wrote:
> On Aug 14, 2:11 pm, Trans <transf...@gmail.com> wrote:
>> On Aug 14, 2:40 am, "nikolai.weib...@gmail.com"
> 
>>> def same_path?(a, b)
>>>   [a, b].map{ |p| File.expand_path(p).downcase }.apply(:==)
>>> end
>> Your first solution is much easier to understand. In fact I would do:
> 
>>  def same_path?(a, b)
>>    File.expand_path(a).downcase == File.expand_path(b).downcase
>>  end
> 
> It's not about the line count but about executing the same set of
> functions/methods on both a and b.  With the #inject or #apply
> solution it's clear that both a and b undergo the same conversion.

perhaps you should just give the functions/methods a name:

def normalize path
  File.expand_path(path).downcase
end

def same_path?(a, b)
  normalize(a) == normalize(b)
end

Of course we are drifting far away from the topic of this thread.

More on topic: I would think an apply method would apply a function to each
member of the array (like map) - just from the sound of word.

>   nikolai

cheers

Simon