[MacRuby-devel] super method

Robert Rice rice.audio at pobox.com
Wed Sep 8 08:50:02 PDT 2010


Thanks Matt:

Good tutorial on super. Maybe someone could add a keyword section to ruby-doc.

This leads me to a couple more questions on super and MacRuby inheritance:

1) Does MacRuby distinguish between Objective C subclasses and other Ruby classes or are all classes treated the same?

2) Can my inheritance path be arbitrarily long before I inherit from NSObject or an NS subclass?

3) If I have an empty init, e.g.,

	def init; super; self; end

	Can I always delete  the empty init and get the same result through inheritance?

Bob Rice


On Sep 7, 2010, at 4:13 PM, Matt Aimonetti wrote:

> Satish has a good blog post on the matter: http://rubylearning.com/satishtalim/ruby_overriding_methods.html
> 
> You can certainly call super in your subclass before making any modifications or calling super based on a condition.
> 
> I hope it helps,
> 
> - Matt
> 
> Sent from my iPhone
> 
> On Sep 7, 2010, at 12:53, Robert Rice <rice.audio at pobox.com> wrote:
> 
>> Thanks Matt:
>> 
>> I didn't see super in the ruby-doc.org/ruby-1.9/index.html unless super is short for superclass.
>> 
>> Can I reach a superclass method without having the message go first to my subclass override of the method?
>> 
>> Bob Rice
>> 
>> 
>> On Sep 7, 2010, at 3:26 PM, Matt Aimonetti wrote:
>> 
>>> No it's not unique to MacRuby (Ruby and Obj-C support that feature) and yes you can pass other arguments :)
>>> 
>>> - Matt
>>> 
>>> Sent from my iPhone
>>> 
>>> On Sep 7, 2010, at 12:16, Robert Rice <rice.audio at pobox.com> wrote:
>>> 
>>>> Questions on the super method:
>>>> 
>>>> Is the super method unique to MacRuby?
>>>> 
>>>> super forwards the current message to the superclass with the same method name and arguments. Is there a way to send a message to the superclass method with different arguments either from within the subclass method of the same name or from outside the subclass method of the same name to bypass the subclass method?
>>>> 
>>>> Thanks,
>>>> Bob Rice
>>>> 
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