Scalar operators
Logical operators
Logical operators
Learn how to use and combine different logical operators in APL.
Logical (binary) operators
The following logical operators are supported between two values of the bool type:
These logical operators are sometimes referred-to as Boolean operators, and sometimes as binary operators. The names are all synonyms.
| Operator name | Syntax | meaning | |
|---|---|---|---|
| Equality | == | Returns true if both operands are non-null and equal to each other. Otherwise, false. | |
| Inequality | != | Returns true if either one (or both) of the operands are null, or they are not equal to each other. Otherwise, false. | |
| Logical and | and | Returns true if both operands are true. | |
| Logical or | or | Returns true if one of the operands is true, regardless of the other operand. |