PROGRAMMING CHALLENGE

This one should be difficult enough for you guys,

Write a function foo that takes a number n and returns a function that takes a number i, and returns n incremented by i.


My submission, in Scheme


(define (foo num)
  (lambda (x) (+ x num)))

I have NX bit turned by default and immutable.
Any "clever" program trying to write/execute to memory(like some Opera versions) gets uninstalled immediately.
Such hacks have no place in modern enterprise environment.