Daniel-Nikpayuk_SICP-Solutions/Chapter 2/2.2/exercise-2.45/exercise.lsp
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;; Copyright 2015 Daniel Nikpayuk
;;
;; This file is part of SICP Solutions.
;;
;; SICP Solutions is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License
;; as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
;;
;; SICP Solutions is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
;; of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License along with SICP Solutions. If not, see
;; <http://www.gnu.org/licenses/>.
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;; defining this without "define" would require a fixed point combinator.
(define (split op1 op2)
 (define (dispatch painter n)
  (if (= n 0)
   painter
   (let
    ((smaller (dispatch painter (- n 1))))
    (op1 painter (op2 smaller smaller))
   )
  )
 )
)

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(define right-split (split beside below))
(define up-split (split below beside))

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