Contains.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "Algo/Find.h"
#include "Templates/UnrealTemplate.h" // For MoveTemp and Forward
 
namespace Algo
{
    template <typename RangeType, typename ValueType>
    [[nodiscard]] UE_REWRITE constexpr bool Contains(RangeType&& Range, const ValueType& Value)
    {
        return !!Algo::Find(Forward<RangeType>(Range), Value);
    }
 
    template <typename RangeType, typename ValueType, typename ProjectionType>
    [[nodiscard]] UE_REWRITE constexpr bool ContainsBy(RangeType&& Range, const ValueType& Value, ProjectionType Proj)
    {
        return !!Algo::FindBy(Forward<RangeType>(Range), Value, MoveTemp(Proj));
    }
 
    // There is no Algo::ContainsByPredicate as it would be identical to Algo::AnyOf.
    // This comment exists to guide users to Algo::AnyOf.
}