From: Carlos <carloshh21@...>
Date: 2001-09-09T23:57:09+09:00
Subject: [ruby-talk:21020] Method parameter

Hi all!

Excuse me for the newbie question, but this I couldn't
figure how to do, and didn't find in the
documentation:

I have an object with a method that receives a
function. How can I pass the function to the method
without enclosing it in a block?

def MyClass
  ...
  def set_fn (&fn)
    @fn=fn
  end

  def calculate    @res=@fn.call(@var1, @var2)
  end
end

def my_fn (arg1, arg2)
  arg1 + arg2
end

my_object=MyClass.new
my_object.set_fn &my_fn  # ERROR: wants to call my_fn
my_object.set_fn { |a, b| my_fn(a, b) } # OK!

Can I avoid using the block?

Thanks in advance!


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