Just wonder is there any way to inject a bunch of code into an instance
method, just like how a module can be used as a mixin to a class?
On 20.08.2010 03:03, Cnm C. wrote:
Just wonder is there any way to inject a bunch of code into an instance
method, just like how a module can be used as a mixin to a class?
One thing you can do is alias the original and use it.
class Foo
def bar; puts 123; end
end
f = Foo.new
f.bar
class Foo
alias _bar bar
def bar
puts “before”
x = _bar
puts “after”
x
end
end
f.bar
I once did some meta programming to nicely declare before and after code
but that code was never production ready. IIRC others did similar
things.
Kind regards
robert