How to alias a class method

ruby-talk
1

Hi!

I’ve run into problem aliasing a class method, i.e.
I have:
class Abc
self.get_abc arg
…
end
end
And later I need to this method, with saving of
original implementation.
Following code is not working:
alias :orig_get_abc, :get_abc

···

–
sdmitry -=- Dmitry V. Sabanin
MuraveyLabs.

2

Following code is not working:
  alias :orig_get_abc, :get_abc

you need to be in the singleton class to make the alias

svg% cat b.rb
#!/usr/bin/ruby
class Abc
   def self.get_abc arg
      puts "abc"
   end
   class << self
      alias orig_get_abc get_abc
   end
end

Abc.orig_get_abc(12)
svg%

svg% b.rb
abc
svg%

Guy Decoux

3

Very nice, thank you! :slight_smile:

···

On Tuesday 16 September 2003 23:43, ts wrote:

you need to be in the singleton class to make the alias

svg% cat b.rb
#!/usr/bin/ruby
class Abc
def self.get_abc arg
puts “abc”
end
class << self
alias orig_get_abc get_abc
end
end

Abc.orig_get_abc(12)
svg%

svg% b.rb
abc
svg%

Guy Decoux

–
sdmitry -=- Dmitry V. Sabanin
MuraveyLabs.