/ScriptX/Documentation/HTML Files/language guide HTML/chars/cdreturn.gif)
true
true or
false can be grouped into logical expressions
using and, or, and
not.expression and expressionThe
expression or expression
not expression
and logical expression only evaluates to
true if all of the sub-expressions
(expression in the syntax) on either side of the
and operator also evaluate to true.
If any of the sub-expressions evaluates to false,
the entire and expression evaluates to
false. The and expression is
short-circuiting; that is, the expression stops evaluating its
sub-expressions after the first false expression
is found.
The or logical expression evaluates to
true if any of the sub-expressions on either side
of the or evaluate to true. The
or expression stops evaluating its
sub-expressions once the first true expression is
found. The or expression only evaluates to
false if all of its sub-expressions also evaluate
to false.
The not expression negates the value of
expression. If expression evaluates to
true, the not expression evaluates
to false, and vice versa.
((3 + 2) < (4 + 5)) and 1 >= 1
"this" < "that" or "penny" > "pound"
not ("feet" = "feet")
This document is part of the ScriptX Language Guide, one of the volumes of the ScriptX Technical Reference Series. ScriptX is developed by the ScriptX Engineering Team at Apple Computer, successor to the Kaleida Engineering Team at Kaleida Labs, Inc.