From: Robert Klemme <shortcutter@...>
Date: 2008-05-20T17:52:12+09:00
Subject: Re: Why is Array#to_f not defined?

2008/5/20 Fredrik <fredjoha@gmail.com>:
> I see... I understand that it is not following the rule of "converting
> the receiver to a float", but I would say that it follows the
> "principle of least surprise".

That may be true for you, but it is not for me - and apparently others as well.

> Of course it is not possible to convert an Array to a Float in any
> meaningful way, so to convert each element into a Float is the
> behaviour I am expecting.

Well, Array#to_f could be defined like this:

class Array
  alias :to_i :size
  def to_f; to_i.to_f end
end

This is much more meaningful to me than making to_f a conversion of
each element to float.  Note, I do not advocate this at all - all I am
saying is that there are more meaningful implementations of to_f than
the one you propose.

> Well... that's my thinking anyway.

Exactly. :-)

Kind regards

robert


-- 
use.inject do |as, often| as.you_can - without end