From: "David A. Black" <dblack@...>
Date: 2004-09-16T04:41:32+09:00
Subject: Re: Ex-Perl coders: Howz it feel to convert to Ruby?

Hi --

On Thu, 16 Sep 2004, Chris wrote:

> (3) Another contrived example, this time in Ruby:
> 
> def Contrived
>     3.times { yield }
> end
> 
> [ "tic", "tac", "toe" ].each do |item|
>     Contrived { printf "%s ", item }
>     printf "\n"
> end
> 
> There is a lot about this that is different than Perl IMO.  I could 
> create an anonymous subroutine in Perl to function something like the 
> yield block, and I realize the Ruby above is itself somewhat contrived, 
> but... still, you wouldn't normally do something like this in Perl 
> whereas in Ruby, these sorts of things are actually useful.

Well, I would do:

  puts ["tic", "tac", "toe"]

or

  puts %w{ tic tac toe }

but I know you meant it just as an illustration of yield :-)  (But
still it's always a pleasure to see how compact and clean Ruby can
be.)

> ## My favorite "Rubyism" I use all the time in Perl -- puts()!
> 
> sub puts { for (@_) { print "$_\n" } }

A perhaps slightly pedantic point: this isn't what puts actually does.
It adds a "\n" to the end of the string only if one isn't there
already.  


David

-- 
David A. Black
dblack@wobblini.net