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doc:getting_started:lisp_crash_course [2022/05/04 08:11] – khoshnamdoc:getting_started:lisp_crash_course [2022/05/17 11:41] (current) – khoshnam
Line 912: Line 912:
 <code lisp> <code lisp>
 CL-USER>(setf a 10) CL-USER>(setf a 10)
-CL-USER>(if (> a 20)+CL-USER>(if (< a 20)
   (format t "~% a is less than 20")   (format t "~% a is less than 20")
  (format t "~% a is more than 20"))  (format t "~% a is more than 20"))
Line 940: Line 940:
  
 <code lisp> <code lisp>
-CL-USER>(defun *number-was-odd nil)+CL-USER>(defun *number-was-odd* nil)
  
 CL-USER>(if (oddp 5) CL-USER>(if (oddp 5)
- (progn (setf (number-was-odd t)+ (progn (setf (*number-was-odd* t)
  ‘odd-number)  ‘odd-number)
  ‘even-number)  ‘even-number)
Line 983: Line 983:
 </code> </code>
  
-<code lisp>+
  
 **defparameter** **defparameter**
 \\ \\
 +<code lisp>
 CL-USER>(defparameter *fruit* 'apple) CL-USER>(defparameter *fruit* 'apple)
 CL-USER>(cond ((eq *fruit* 'apple) 'its-an-apple) CL-USER>(cond ((eq *fruit* 'apple) 'its-an-apple)
Line 1074: Line 1075:
 **Dotimes** **Dotimes**
 \\ \\
-With dotimes you can do looping for some fixed number of iterations.+With dotimes you can do looping for some fixed number of iterations. So the dotimes is quite similar to dolist, but you should consider that it loops for a particular number of times.
  
 <code lisp> <code lisp>
Line 1094: Line 1095:
 \\ \\
 Do is more general than two others.  Do is more general than two others. 
 +
 +<code lisp>
 +CL-USER>(do (var-form*)
 +               (end-form*)
 +                body-form*)
 +</code>
 +Var-form consists of some varibles that we defined and their initial values And how each iteration will affect it\\
 +end-form composed of how the loop finish and value returned. It will evaluated at the start of the iteration.
  
 <code lisp> <code lisp>