From: "Bartosz Dziewoński" <matma.rex@...>
Date: 2012-02-04T03:16:40+09:00
Subject: Re: Help please Undefined Method error

Personally I have no problems using:

def get_words
  ret = []
  while !(input = gets.chomp).empty?
    ret << input
  end
  return ret
end

I think that what I also dislike about using #tap in this scenario is
that you have to scan the entire function to see what it returns. In
my example, it clearly returns a variable named ret, and you can
easily look for this name in the code, see it defined and filled. In
your, it returns a value of the block inside, which might return
anything = so you scroll to the top, only then see it's a #tap, then
looks for the variable name it uses inside the block, and only now you
see what is this array filled with.

Obviously which one you prefer is subjective; just my two cents. But
I'm pretty sure that the "declare accumulator, fill it, return it" is
easily recognizable for anyone - complete beginner and a convert from
any other language - while #tap is Ruby-specific and a cryptic for
newbies.

(I don't know Python well, but what the yield keyword does in it in an
interesting way to solve this problem.)

-- Matma Rex