TArray::ContainsByPredicate

function Core Since unknown

#include "Containers/Array.h"

Access: public Specifiers: const

Description

Returns true if any element satisfies the predicate. Equivalent to FindByPredicate(Pred) != nullptr but more expressive when only a bool is needed.

Signature

bool ContainsByPredicate(Predicate Pred) const

Parameters

Name	Type	Description	Default
Pred	Predicate	A callable returning true if the element matches the condition.	—

Return Type

bool

Caveats & Gotchas

• O(n) linear scan. Stops at the first match.
• If you also need the matched element or its index, use FindByPredicate() or Find() instead to avoid scanning twice.

Example

Check for a named item or a threshold condition C++

// Check if any quest is complete
bool bAnyComplete = Quests.ContainsByPredicate([](const FQuest& Q)
{
	return Q.bIsComplete;
});

// Check if the player has a legendary item
bool bHasLegendary = Inventory.ContainsByPredicate([](const FItem& Item)
{
	return Item.Rarity == EItemRarity::Legendary;
});

Version History

Introduced in: unknown

Version	Status	Notes
5.6	stable	—

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