method_added for class methods

[Caio Chassot]

Hi all,

Is there any way to get method_added to work with class methods? (or to
get the same functionality trough another means?)

Any pointers are appreciated.

 

[Trans]

class X
class << self
def method_added(*args)
p args
end
def singletin_method_added(*args)
p args
end
end
end

Don't ask me to explain it --it's mind numbing.

T.

 

[Trans]

s/singletin/singleton/

 

[David A. Black]

Hi --

class X
class << self
def method_added(*args)
p args
end
def singletin_method_added(*args)

s/tin/ton/

p args
end
end
end

I believe that only the singleton_method_added actually does anything.
I guess that's because the only methods you can add to this class are
singletons, and that gets priority.

At least, when I tried method_added, I couldn't get any output.

Don't ask me to explain it --it's mind numbing.

Like so many things, it comes down to:

* objects can have singleton methods
* singleton methods are stored in the object's singleton class
* classes are objects

It's so lovely, don't you think?


David

 

[Caio Chassot]

def singletin_method_added(*args)

s/tin/ton/

Thanks. That did the trick. I didn't know about singleton_method_added.

Like so many things, it comes down to:

* objects can have singleton methods
* singleton methods are stored in the object's singleton class
* classes are objects

It's so lovely, don't you think?

Indeed

 

[Caio Chassot]

Thanks. That did the trick. I didn't know about singleton_method_added.

So I just bought the pickaxe 2 and it's there. Gotta love this book.

I was surprised I didn't find it in ri, but now I see it there and it's
a method of Object, not Module or Class. (which actually makes sense,
when you think about it for a second)

 

[Robert Klemme]

Hi --



s/tin/ton/


I believe that only the singleton_method_added actually does anything.
I guess that's because the only methods you can add to this class are
singletons, and that gets priority.

At least, when I tried method_added, I couldn't get any output.
Worksforme:

:x
=> nil

Like so many things, it comes down to:

* objects can have singleton methods
* singleton methods are stored in the object's singleton class
* classes are objects

It's so lovely, don't you think?

Yes!

Kind regards

robert

 

[David A. Black]

Hi --

:x
=> nil

Right -- actually the one that I expected would work, but didn't,
was a different one, and I got my wires crossed. Here it is:

class C
class << self
def self.method_added(m)
p m
end
def x
end
end
end


David

 

[Caio Chassot]

Right -- actually the one that I expected would work, but didn't,

was a different one, and I got my wires crossed. Here it is:

class C
class << self
def self.method_added(m)
p m
end
def x
end
end
end

That's what I'd been trying before I posted.

Can anyone explain why it doesn't work?

 

[Caio Chassot]

Worksforme:

:x
=> nil

Well, but the question was about class methods, and you're defining an
instance method.