From: the_crazy88 <python@...>
Date: 2006-02-13T06:23:25+09:00
Subject: How to pass a function as argument in ruby?

I've searched a bit about the subject, but I don't understand it. All I
want is to simply pass a function of one instance to another. In Python
this works, but in ruby not.

Python code would be:
def x(a,b):
  return a+b

def y(a):
  return a(3,4)

y(x)
# Result is 7
But the equivalent ruby code doesn't work:

def a(x,y)
  return x+y
end

def x(b)
  return b(3,4)
end

x(a)
 #Gives the following error in irb:

NoMethodError: undefined method `b' for main:Object
        from (irb):40:in `x'
        from (irb):42
        from :0