From: "Berger, Daniel" <Daniel.Berger@...>
Date: 2006-05-18T23:27:46+09:00
Subject: [OT] Partial functions?

Hi all,

I'm trying to understand a new feature of Python 2.5 (PEP 309) called
"partial functions".  Here's the Python example I pulled from Vincent
Foley's blog:

import functional
	
def multiply(x, y):
  return x * y
	
multiply_by_3 = functional.partial(multiply, 3)
	
multiply_by_3(4) #=> Will return 12

I understand what it's doing, I just don't understand what purpose of
partial functions would be.  Can someone provide a use case for me?

Also, can/should we do this in Ruby?

Regards,

Dan


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