From: Rodrigo Rosenfeld Rosas <rr.rosas@...>
Date: 2011-06-06T03:56:12+09:00
Subject: [ruby-core:36769] Re: [Ruby 1.9 - Feature #4830][Open] Provide Default Variables for Array#each and other iterators

I would just like to point it out that in Groovy, one can write either:

[1, 2].each{ println it }

or

[1, 2].each{ number -> println number }

Em 05-06-2011 05:23, Lazaridis Ilias escreveu:
> Issue #4830 has been reported by Lazaridis Ilias.
>
> ----------------------------------------
> Feature #4830: Provide Default Variables for Array#each and other iterators
> http://redmine.ruby-lang.org/issues/4830
>
> Author: Lazaridis Ilias
> Status: Open
> Priority: Normal
> Assignee:
> Category: core
> Target version:
>
>
> for arrays: use "item" by default
> for hashes: use "key" and "value" by default
>
> names = ["Jane", "Michele", "Isabella"]
> names.each { |name| print name, "\n" }
> names.each { print item, "\n" }
>
> contact = {name:"Jane", phone:"1234567"}
> contact.each { |key, value| print key, ": ", value, "\n"}
> contact.each { print key, ": ", value, "\n"}
>
> -
>
> The benefits are:
>
> * more compact code (without loosing clarity of the code).
> * no repetitions ("names, name, name") in a one-liner with {} block
>
> This extension does not break any existent behaviour.
>
>