From: Chris Carter <cdcarter@...>
Date: 2007-05-23T11:51:51+09:00
Subject: Re: problem appending to arrays in a hash of arrays

On 5/22/07, Mike Steiner <mikejaysteiner@gmail.com> wrote:
> I'm trying to create a hash with each element being an array (initially
> empty), and I've tried a few variations to get what I want. Why don't the
> last 2 lines work?
>
> h = Hash.new ( Array.new )
> h["abc"] = h["abc"] + [ "foo" ]   # this works
> h["abc"] << "foo"                 # this doesn't
> h["abc"].push ( "foo" )           # this doesn't either
>
> (Note: the above code isn't the actual code I'm using, but a simplified
> version.)
>
> Mike Steiner
>


>> g = Hash.new {|h,k| h[k]=[]}
=> {}
>> g["abc"] << :foo
=> [:foo]
>> g
=> {"abc"=>[:foo]}

-- 
Chris Carter
concentrationstudios.com
brynmawrcs.com