From: Ross Bamford <rosco@...>
Date: 2005-12-02T19:22:32+09:00
Subject: Re: ruby one-liner needed

On Fri, 02 Dec 2005 09:00:30 -0000, Kev Jackson  
<kevin.jackson@it.fts-vn.com> wrote:

> Here's one taht I know is possible (I'm sure I've seen it somewhere  
> before)
>
> I have 2 arrays and I'd like to change them into a Hash
> stuff = ["1", "2", "3"]
> Item.column_names.each { |column_name| new_item[column_name] = stuff[?] }
>
> The problem is how to index within the block to move along the stuff  
> array, and how to deal with the fact that most of the time the stuff  
> array is shorter than the column_names array
>
> I'm sure using collect, map of something else ruby-ish that this is more  
> than possible, but I can't find a solution right now
>
> Kev
>
>

Well, theres lots of ways, but one is to inject the Hash as someone here  
showed me yesterday:

	items.column_names.inject({}) { |hash, column_name| hash[column_name] =  
row.shift ; hash }

(I wanted to eliminate the '; hash' at the end of the closure but couldn't  
find a way yet...)

However, I personally prefer Simon's solution, which can be a real  
one-liner too :)

	Hash[*items.column_names.zip(row).flatten]

-- 
Ross Bamford - rosco@roscopeco.remove.co.uk
"\e[1;31mL"