Non-destructive TArray<AActor*>?

Development Programming & Scripting C++
, , , ,
13

Algo::StableRemoveIf is a bit slow but it also maintains order.

for (FFitnessVrChartItemGroup& Group : ChartItemGroups)
	{
		if (const int32 Result = Algo::StableRemoveIf(Group.ChartItemsInGroup,
                [&InExpiredItems](AFitnessVrChartItemBase* Comparator)
                {
					return InExpiredItems.Contains(Comparator);
                })
            )
		{
			Group.ChartItemsInGroup.SetNum(Result);

			if (!bHaveAnyGroupsChanged)
			{
				bHaveAnyGroupsChanged = true;
			}
		}
	}

StableRemoveIf returns a number of items that match the lambda and will be ‘removed’ by moving the non-matching items to the front of the array. If the result is more than 0, I set the number of elements in the array directly, cutting off the removed items.