Question

Is it possible to replace a method of a Moose object at runtime ?
By looking at the source code of Class::MOP::Method (which Moose::Meta::Method inherits from) I concluded that by doing

 $method->{body} = sub{ my stuff }

I would be able to replace at runtime a method of an object.
I can get the method using

 $object->meta->find_method_by_name(<method_name>);

However, this didn’t quite work out.

Is it conceivable to modify methods at run time? And, what is the way to do it with Moose?

Answer 1

Moose or not, that does not sound like a good idea.

Instead, design your object to have an accessor for the method. For example, users of your class can use My::Frobnicator->frobnicator->() to get and invoke the frobnicator method and use My::Frobnicator->frobnicator(sub { } ) to set it.