Differences

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--- ch2_3_predic [2022/03/03 09:16] – admin
+++ ch2_3_predic [2022/03/30 04:28] (current) – admin
@@ Line 1: / Line 1: @@
 **//Predicates//**
-Simple functions that return ''T'' or ''NIL''.
+Simple functions that return ''T'' or ''NIL''. They have no side effects.
 ''EQ''
@@ Line 230: / Line 230: @@
 <code lisp>
->(fboundp '+)     ; ordinary function
+>(special-operator-p '+)     ; ordinary function
 NIL
->(fboundp 'if)    ; special operator IF
+>(special-operator-p 'if)    ; special operator IF
 T
 </code>