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rubymethodsmetaprogramming
Joern Akkermann
Joern Akkermann

Reputation: 3622

Ruby Metaprogramming: creating a method by a method

I just wondered about some metaprogramming.

Actually I need to create a method within a method, or just create a method in the root of a class by a block. example:

["method_a", "method_b"].each do |m|
  Marshal.generate_a_method_called(m)
end

Does somebody know how this is possible? And where to place what the method does? I need one argument for my method.

Yours,

Joern.

Upvotes: 0

Views: 660

Answers (2)

mliebelt
mliebelt

Reputation: 15525

I don't understand your example. Are you generating the source for the method as well?

So I will start with an example from the book Perrotta: Metaprogramming Ruby

class MyClass
  define_method :my_method do |my_arg|
    my_arg * 3
  end
end

obj = MyClass.new
obj.my_method(2) # => 6

Upvotes: 1

rm-rf
rm-rf

Reputation: 1333

You could use define_method:

[:method_a, :method_b].each do |m|
  define_method(m) do
    # your method stuff
  end
end

Upvotes: 4

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