From: "Søren Andersen" <soren.andersen@...>
Date: 2007-10-27T06:00:23+09:00
Subject: Re: Passing methods as parameters - the nice way?

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On 10/24/07, Stefan Rusterholz <apeiros@gmx.net> wrote:
>
> S=F8ren Andersen wrote:
> > Hello all,
> >
> > I told it to:
> > def call_action
> >   if(@action_method)
> >     send(@action_method)
> >   end
> > end
> >
> > which works fine, as long as my method is defined "in the wild":
> >
> > def foo
> >   puts "foo called"
> > end
> >
> > interface.set_action(:foo)
> > interface.call_action =3D> foo called
>
> I'd suggest using blocks instead of the above construct. Your code
> transformed:
>
> def on_action(&block)
>   @action =3D block
> end
>
> def action
>   @action.call if @action
> end
>
> obj =3D Object.new
> def obj.foo; puts "foo on #{self.inspect} called"; end
>
> interface.on_action { obj.foo }
> interface.action
>
> # alternatively:
> interface.on_action(&obj.method(:foo))
> interface.action
>
> Blocks are far more flexible than passing a method name or instance.
>
> Regards
> Stefan


Thanks! I'll try this approach as well!

Regards,

S=F8ren

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