From: "David A. Black" <dblack@...>
Date: 2009-09-15T10:40:21+09:00
Subject: Re: URL format

Hi --

On Tue, 15 Sep 2009, John W Higgins wrote:

> On Mon, Sep 14, 2009 at 5:58 PM, Re BR <rereis@hotmail.com> wrote:
>
>> I have the following hash myhash
>>   { "inter" => "team", "shirt" => "stripe" }
>>
>> desired output
>>
>>  inter=team&shirt=stripe
>>
>> I tried url_for myhash but got undefined method `url_for' for
>>
>
> The single line answer would be
>
> hsh = { "inter" => "team", "shirt" => "stripe" }
> hsh.to_a.map{|e| e.join('=')}.join('&') # 'inter=team&shirt=stripe'

No need for the to_a. You'll get a [key,value] array in e each time
through by just mapping the hash.

Note that the order might come out different; for example, on my
machine anyway:

>> hsh = { "inter" => "team", "shirt" => "stripe" }
=> {"shirt"=>"stripe", "inter"=>"team"}
>> hsh.map {|entry| entry.join("=") }.join("&")
=> "shirt=stripe&inter=team"

though I suspect it doesn't matter in this case.


David

-- 
David A. Black, Director
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Book: The Well-Grounded Rubyist (http://www.manning.com/black2)