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Hi

I'm doing some gnome/ruby stuff and I wonder how instance method's
argument like {:a => "a", :b => "b"} can be used. Such argument are
used, for example, in Gnome::CanvasLine.new and seems to set instance
variables.

I didn't succeed to use such hash argument. The only way I got is by
using {:@a => "a", :@b => "b"} with a code like

Class Foo
def set(hash)
hash.each {|k,v| self.instance_variable_set(k,v)}
end
end

Can you explain me how {:a => "a", :b => "b"} should be handled?

Thanks

Nico

Hi --

On Sat, 5 Nov 2005, Nicolas Rassat wrote:

> Hi
>
> I'm doing some gnome/ruby stuff and I wonder how instance method's argument
> like {:a => "a", :b => "b"} can be used. Such argument are used, for example,
> in Gnome::CanvasLine.new and seems to set instance variables.
>
> I didn't succeed to use such hash argument. The only way I got is by using
> {:@a => "a", :@b => "b"} with a code like
>
> Class Foo
> def set(hash)
> hash.each {|k,v| self.instance_variable_set(k,v)}
> end
> end
>
> Can you explain me how {:a => "a", :b => "b"} should be handled?

instance_variable_set("@#{k}",v)


David

--
David A. Black

David A. Black a écrit :
> Hi --
>
> On Sat, 5 Nov 2005, Nicolas Rassat wrote:
>
>>
snip
>>
>> Class Foo
>> def set(hash)
>> hash.each {|k,v| self.instance_variable_set(k,v)}
>> end
>> end
>>
snip
>
> instance_variable_set("@#{k}",v)
>
>
> David
>

Ahem... Looks it works

But it's almost 50% more times of computing. So why don't use the :@a
syntax (yes in this case it's 50% more times writing...

Nico