From: "Jesús Gabriel y Galán" <jgabrielygalan@...>
Date: 2008-09-07T03:36:43+09:00
Subject: Re: any way to write it in one line ?

>
> On Sat, Sep 6, 2008 at 7:14 PM, Erwin <yves_dufour@mac.com> wrote:
>
>>     works =  Array.new
>>     session[:cart_works].each_pair {|key, value| works << key if
>> value == user_id}
>>
>> how to initialize the works array in the bloc ?

On Sat, Sep 6, 2008 at 8:19 PM, Dave Goodchild <buddhamagnet@gmail.com> wrote:
> session[:cat_works].each_pair do |key, value|  works = Array.new unless
> works
>  works << key if value == user_id
> end

I think that in this case works is not visible outside of the block
(unless you already had it defined, which kind of defeats the purpose):

irb(main):007:0> h.each_pair {|k,v| arr = Array.new unless arr; arr <<
k if v==3}
=> {:c=>3, :a=>3, :b=>5}
irb(main):008:0> arr
NameError: undefined local variable or method `arr' for main:Object
        from (irb):8

Jesus.