Table 2-3: ScriptX operator precedence, highest to lowest

Operator (s)	Notes
collection[key]	element access in collections, described on page 50
object.variable	class and instance variable access, described in Chapter 3
function arg arg . . . function (arg, arg, . . .)	function calls, described in Chapter 3
object as class	object coercion, described in Chapter 3
-	negation, described on page 42
* /	multiplication, division, described on page 42
+ -	addition, subtraction, described on page 42
= == <> != !== > < >= <= contains	equality and magnitude, described on page 43. contains is used for collection membership, described on page 52
not	logical not, described on page 47.
and	logical and, described on page 47
or	logical or, described on page 47.
in by	for expressions association is from right to left.
|	pipe operator, described in Chapter 5
repeat guard exit for return	loops and block control expressions are described in Chapter 4, while the guard expression is described in Chapter 8.
&	thread operator, described in Chapter 5
location := value	assignment operator, described on page 38

You can change the order of evaluation by surrounding expressions with parentheses. ScriptX evaluates the innermost expressions first:

(((3 + 15) * 2) == 36)

(3 < 4) and (5 >= 2)

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.

Copyright 1996 Apple Computer, Inc. All Rights Reserved.