Hook for class creation

ruby-talk
1

Is there a hook method called whenever a new class is created i.e.
guaranteed called for every new instance of Class ?

Class#initialize does not work.

Thanks.

2

itsme213 wrote:

Is there a hook method called whenever a new class is created i.e.
guaranteed called for every new instance of Class ?

You can try Object.inherited, but I'm not sure if it will get called when a class is created internally in C code.

Plus it can be overridden in subclasses so there is no 100% guarantee of it getting called.

3

Ah. Considering your suggestion I realized that I really wanted a hook for
just when my classes were created. So MyBase#inherited or MyMod#included are
good hooks.

Thanks!

p.s. the solution to my earlier question on clean-up for eval'ing named
class definitions in unit tests turned out to be
    Module#remove_const

"Florian Gross" <flgr@ccan.de> wrote in message
news:2vf8hfF2li20bU1@uni-berlin.de...

···

itsme213 wrote:

> Is there a hook method called whenever a new class is created i.e.
> guaranteed called for every new instance of Class ?

You can try Object.inherited, but I'm not sure if it will get called
when a class is created internally in C code.

Plus it can be overridden in subclasses so there is no 100% guarantee of
it getting called.

4

Florian Gross wrote:

itsme213 wrote:

Is there a hook method called whenever a new class is created i.e.
guaranteed called for every new instance of Class ?

You can try Object.inherited, but I'm not sure if it will get called when a class is created internally in C code.

Plus it can be overridden in subclasses so there is no 100% guarantee of it getting called.

.

What about just putting the initialization code in the class definition?

   class Foo
     def bar
       ...
     end
     ...
     # class init
     do_something
     do_something_else
   end

- Jamis

···

--
Jamis Buck
jgb3@email.byu.edu
http://www.jamisbuck.org/jamis

5

"Jamis Buck" <jgb3@email.byu.edu> schrieb im Newsbeitrag
news:41927269.1020701@email.byu.edu...

Florian Gross wrote:
> itsme213 wrote:
>
>> Is there a hook method called whenever a new class is created i.e.
>> guaranteed called for every new instance of Class ?
>
>
> You can try Object.inherited, but I'm not sure if it will get called
> when a class is created internally in C code.
>
> Plus it can be overridden in subclasses so there is no 100% guarantee

of

> it getting called.
>
> .
>

What about just putting the initialization code in the class definition?

   class Foo
     def bar
       ...
     end
     ...
     # class init
     do_something
     do_something_else
   end

I think 213 wanted some automated mechanism, so you can't forget it when
you create a new class.

    robert