CODEWITHSUNDEEP
rubymetaprogramming
tomatediabolik
tomatediabolik

Reputation: 111

Create dynamic method that takes argument

Is it possible to declare dynamic methods with define_method that does an instance_exec of a block with arguments ? Something like this :

class D
  def self.adapt (method,*args,&impl)
    define_method(method) do 
      instance_exec(args,impl)
    end
  end
end

D.adapt(:foo,a,b) { a + b }

puts D.new.foo(1,2)

Upvotes: 2

Views: 68

Answers (1)

Gaston
Gaston

Reputation: 1848

Yes, you can:

class D < Struct.new(:c)
  def self.adapt (method, &impl)
    define_method(method) do |*args|
      instance_exec(*args, &impl)
    end
  end
end

D.adapt(:foo) { |a, b| a + b + c }

puts D.new(3).foo(1, 2)
# => 6

Upvotes: 5

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