From: Pit Capitain <pit@...>
Date: 2002-08-01T16:38:55+09:00
Subject: Re: GetoptLong#to_hash

On 1 Aug 2002, at 15:41, Paul Duncan wrote:

> I find myself converting the results of option parsing into a hash.  I
> was wondering if other people would find something like this useful in
> the main library:
> 
> class GetoptLong
>   def to_hash
>     hash = {}
>     each { |key, val| hash[key] = val or true }
>     hash
>   end
> end

I used a similar approach, too, and found it very useful. Otherwise I 
had to use GetoptLong#each to process all of the options at once, 
storing more or less the same information in instance variables for 
later use.

I also added an optional parameter to be able to specify default 
values. In your code it could look something like:

  class GetoptLong
    def to_hash( hash = {} )
      each { |key, val| hash[key] = val or true }
      hash
    end
  end

so you could call it as

  GetoptLong.new( ... ).to_hash( "--width" => 35, "--height" => 20 )

Regards,
Pit