docs.intersystems.com
ObjectScript Tutorial
Logical Operators
[Home] [Back] [Next]
InterSystems: The power behind what matters   
Search:    

There are two binary logical operators, which allow you to evaluate complex conditions comprising multiple simple conditions. There is also a unary logical operator, which reverses the value of a condition. When building complex conditions, remember to always use parentheses to clarify the meaning of the expression.

Logical Operators
Operator Operation Examples of true conditions
&& And. All conditions must be true for the entire condition to be true. if (2 = 2) && (3 = 3) {write "both are true"}
|| Or. At least one of the conditions must be true (or both) for the entire condition to be true. if (2 = 2) || (3 = 4) {write "one is true"}
' Negation (Not). The original condition must be false for the negated condition to be true. if '(2 = 3) {write "unequal"}


Send us comments on this page
Copyright © 1997-2019 InterSystems Corporation, Cambridge, MA