| Maptitude GISDK Help |
Logical operators take Boolean operands, and return a Boolean value of True or False.
|
Operator |
Meaning |
|
& (or AND) |
logical AND |
|
| (or OR) |
logical OR |
|
! (or NOT) |
NOT |
Logical operators are not case sensitive.
|
1 > 2 or 3 > 2 |
//True |
|
1 > 2 and 3 > 2 |
//False |
|
not 1 > 2 |
//True |
Maptitude evaluates Boolean expressions with "lazy" evaluation or what is sometimes called "conditional" operations. In the Boolean expression
a or b
a is evaluated and, if the result is True, b will not be evaluated. Similarly, in the Boolean expression
a and b
b will only be evaluated if a evaluates to True.
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