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Zingo Dictionary
Expression Evaluation
Copyright © 1996-1997.
Zeus Productions. All Rights Reserved.
Lingo expressions require that both operands in an expression be of the
same data type. If they are not, Lingo attempts to converts the operands
to the same data type before performing the comparison. If it cannot perform
the conversion, it will post an error message instead.
The precedence of each operator determines the order of evaluation of an
expression. The highest precedence is five (5) and the lowest is one (1).
Items with the same precedence are evaluated left to right. You can change
the order of evaluation using the parentheses. to group expressions.
Precedence Level 5
() [parentheses]
- (negation)
not
or
and
>
<>
>=
<=
=
to
* (multiplication)
/ (division)
mod (modulo division (i.e. determine the remainder))
Precendence Level 3
+ (addition)
- (subtraction)
In an arithmetic operation, if both operands are integers, the result is
an integer. If one or both of the expressions is a floating point number,
the result is a float as well.
See the TechNote, "Implicit and Explicit Type
Conversion" for details.
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Copyright © 1996-1997. Zeus
Productions. All Rights Reserved.
(This page last revised August 25, 1997)