From: Daniel Schierbeck <daniel.schierbeck@...>
Date: 2006-08-17T18:30:11+09:00
Subject: Re: Multiple arguments for Hash#delete

Trans wrote:
> Daniel Schierbeck wrote:
>> This may be a Facet:
>>
>>    class Hash
>>      alias_method :__delete__, :delete
>>
>>      def delete(*keys, &block)
>>        if keys.length == 1
>>          __delete__(keys.first, &block)
>>        else
>>          keys.map{|key| __delete__(key, &block) }
>>        end
>>      end
>>    end
>>
>> Probably somewhat slower, but hey, it lets you do this
>>
>>    a, b, c = hsh.delete :a, :b, :c
>>
>> which fits in nicely with
>>
>>    hsh[:a, :b, :c] = 1, 2, 3
>>
>> and
>>
>>    a, b, c = hsh[:a, :b, :c]
> 
> Good deal. I'll add it. Looks to be a safe override too.

For once... :)

> Perhaps this is a good update for future version of Ruby?

I think the updated #[], #[]= and #delete all deserve to be in core. The 
only problem I see is performance-wise, although implementing them in C 
might help there.


Cheers,
Daniel