;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; This file is part of AIslash.
;
; AIslash 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.
;
; AIslash 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 AIslash.  If not, see <http://www.gnu.org/licenses/>.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

(defun lt (x y)
  (if (string-lessp (format nil "~a" x) (format nil "~a" y))
      t
      nil))

(defun nchars (n &optional (char #\Space))
  (with-output-to-string (s)
    (dotimes (i n)
      (format s "~a" char ))))

(defun whitespacep (char)
  (member char '(#\Space #\Tab #\Newline #\Page) :test #'char=))

(defun whiteout (seq)
  (remove-if #'whitespacep  seq))

(defun samep (x  y)
  (string= (whiteout (format nil "~(~a~)" x))
           (whiteout (format nil "~(~a~)" y))))