UKismetMathLibrary::BooleanOR
#include "Kismet/KismetMathLibrary.h"
Access: public
Specifiers: staticBlueprintPure
Description
Returns true if at least one of A or B is true (logical OR). In Blueprints this is the 'OR Boolean' node, which also supports multiple inputs via CommutativeAssociativeBinaryOperator.
Caveats & Gotchas
- • Blueprint OR nodes do not short-circuit — both pins are fully evaluated before the output is produced. This differs from C++ '||' which stops evaluating after the first true operand. Avoid attaching function calls with side effects to OR inputs when using Blueprints.
- • The CommutativeAssociativeBinaryOperator meta causes the Blueprint editor to merge chained OR nodes into a single multi-pin node visually, but the evaluation order is not guaranteed.
Signature
static UE_INL_API bool BooleanOR(bool A, bool B);Parameters
| Name | Type | Description | Default |
|---|---|---|---|
| A | bool | First boolean operand. | — |
| B | bool | Second boolean operand. | — |
Return Type
bool Example
Allow interaction if either trigger is active C++
bool bTriggered = UKismetMathLibrary::BooleanOR(bButtonPressed, bProximityTriggered);Tags
Version History
Introduced in: 4.0
| Version | Status | Notes |
|---|---|---|
| 5.6 | stable | — |
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