Creating unwanted USTRUCTS with default constructor

Development Programming & Scripting
,
1

I’ve created a USTRUCT which is in the same file with an UClass(Abstract) UUserWidget.

Which is something like this:

USTRUCT()
struct FCurrentTimeTextElement
{
	GENERATED_BODY()
	UPROPERTY()
	int8 VariantID;
	UPROPERTY()
	uint8 TimeManagerIndex;
	UPROPERTY()
	uint8 StartIndex;
	UPROPERTY()
	uint8 CharacterCount;
	
	FCurrentTimeTextElement()
	{
		UE_LOG(LogTemp, Warning, TEXT("FCurrentTimeTextElement::FCurrentTimeTextElement() DEFAULT CONSTRUCTOR"));
		TimeManagerIndex = 0;
		StartIndex = 0;
		CharacterCount = 0;
		VariantID = 0;
	}
	
	FCurrentTimeTextElement(const uint8 InTimeManagerIndex, const uint8 InStartIndex, const uint8 InCharacterCount, const int8 InVariantID)
	{
		UE_LOG(LogTemp, Warning,
			TEXT("FCurrentTimeTextElement::FCurrentTimeTextElement(), InTimeManagerIndex: %d InStartIndex: %d InCharacterCount:%d"),
			InTimeManagerIndex, InStartIndex, InCharacterCount);
		TimeManagerIndex = InTimeManagerIndex;
		StartIndex = InStartIndex;
		CharacterCount = InCharacterCount;
		VariantID = InVariantID;
	}
	
};

And at the UUserWidget class I have an array from this struct like:


private:
	UPROPERTY()
	TArray<FCurrentTimeTextElement> CurrentTimeTextElementArray;

I also have this method to get a reference to it:

UFUNCTION()
	TArray<FCurrentTimeTextElement>& GetCurrentTimeTextElementArray() { return CurrentTimeTextElementArray; }

So my issue is, SOMETIMES (Especially after a crash because of an assert) My code starts to produce more ustruct elements on my array. I don’t create them with any code. I’m probably somehow copying a default value by accident. Because my Default Constructor prints into log 4 default elements.

The fun part is, when I comment things one by one, and uncomment, it starts to act as it has to be (Not creating elements into array that with default constructor)

So what I thought is that I’m missing something related to Garbage Collection maybe? I’m a beginner with C++ and Unreal Engine so any help appreciated.

In case you need more data, here is where and how I access this array:

Here is something inside a method to find an element from this struct array:

const FCurrentTimeTextElement* CurrentTimeTextElement = CurrentTimeTextElementArray.FindByPredicate(
		[Index](const FCurrentTimeTextElement& TimeTextElement)
		{
			return TimeTextElement.TimeManagerIndex == Index;
		});

	//TODO: Change this null check logic soon
	if(CurrentTimeTextElement == nullptr)
	{
		return;
	}

Here is how I add new elements to array at constructor of my UUserWidget:

CurrentTimeTextElementArray.Emplace(
			FCurrentTimeTextElement(
				FMathf::Abs(MatchedNumber), 0, CharacterCount, VariantID));

And this is the place I suspect I create copies without intention (But it starts to work appropriately again after commenting and uncommenting everything with compile each time:


const TArray<FCurrentTimeTextElement>& Elements= TimeControlsWidget->GetCurrentTimeTextElementArray();

Thanks in advance for help!

2

Okay it was totally my mistake but for anyone who experience something similar: I was adding the elements to the array on constructor and it seems it’s not a good idea, because constructor is called on blueprints (and when any compile is done)