Neville Burnell
5/18/2005 12:33:00 AM
Yep, extending Hash was what I ended up doing ...
-----Original Message-----
From: David Mitchell [mailto:david.mitchell@telogis.com]
Sent: Wednesday, 18 May 2005 10:11 AM
To: ruby-talk ML
Subject: Re: Noobie ... Simple Inheriting from Hash Question ..
You could just extend the hash class, rather than inheriting from it.
That is, instead of this:
class myHash < Hash
def foo
...
end
end
Do this:
class Hash
def foo
...
end
end
Then, all your hash objects will be given your 'foo' method and you can
do things like this:
{:key => "value"}.foo
David
Neville Burnell wrote:
> Hi,
>
> I have a class inheriting from Hash which has some specific methods
> operating on the hash elements:
>
> Class MyHash < Hash
>
> def foo
> ...
> end
>
> End
>
> ....
>
> Now, with Hash class, its really easy to create a new hash, eg
>
> h = {:key1 => "val1", :key2 => "val2"}
>
> What I would like to do is create a new instance of the class with the
> same simplicity, but I'd like to avoid creating a redundant Hash and
> tranferring the contents one by one to MyHash which happens if I code:
>
> h = MyHash.new(:key1 => "val1", :key2 => "val2")
>
> and then define initialize(h={})
>
> Whats the "ruby way" tm for something like this?
>
> Thanks
>
> Nev
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--
David Mitchell
Software Engineer
Telogis
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