I just want an array of wildcards help

Development Programming & Scripting
,
1 

//h 
/**
	 * Drops the first N elements of the array and copies the rest to a new array. If N is larger than size of the input array, an empty array is returned.
	 *
	 * @param TargetArray Array.
	 * @param Size Number of elements to drop.
	 * @return The array without the first N elements.
	 */
	UFUNCTION(BlueprintCallable, CustomThunk, meta = (CompactNodeTitle = "DROP", Category = "Array Utils", ToolTip = "Drop N items from the beginning of the input array and copy the rest to a new array. If N is larger than size of the input array, an empty array is returned.", ArrayParm = "TargetArray", Keywords = "drop delete drray"))
	static TArray<int32> ArrayDrop(const TArray<int32>& TargetArray, int32 Size);

	static TArray<int32> GenericArrayDrop(void* TargetArray, const UArrayProperty* ArrayProp, int32 Size);

	DECLARE_FUNCTION(execArrayDrop)
	{
		Stack.MostRecentProperty = nullptr;
		Stack.StepCompiledIn<UArrayProperty>(NULL);
		void* ArrayAddr = Stack.MostRecentPropertyAddress;
		UArrayProperty* ArrayProperty = Cast<UArrayProperty>(Stack.MostRecentProperty);
		if (!ArrayProperty)
		{
			Stack.bArrayContextFailed = true;
			return;
		}
		P_GET_PROPERTY(UIntProperty, Size); // Cannot resolve symbol 'TCppType'
		P_FINISH;
		P_NATIVE_BEGIN;
		GenericArrayDrop(ArrayAddr, ArrayProperty, Size);
		P_NATIVE_END;
	}

//cpp
TArray<int32> UNumericBPLibrary::ArrayDrop(const TArray<int32>& A, int32 N)
{
	N = FMath::Clamp(N, 0, A.Num());
	return TArray<int32>(A.GetData() + N, A.Num() - N);
}

TArray<int32> UNumericBPLibrary::GenericArrayDrop(void* TargetArray, const UArrayProperty* ArrayProp, int32 Size)
{
	if (!TargetArray || !ArrayProp)
	{

		return TArray<int32>();
	}

	const int32 ArrayNum = ArrayProp->ArrayDim * ArrayProp->ElementSize;

	Size = FMath::Clamp(Size, 0, ArrayNum);

	const int32 NewArrayNum = ArrayNum - Size;

	TArray<int32> ResultArray;
	ResultArray.SetNumUninitialized(NewArrayNum);

	FMemory::Memcpy(ResultArray.GetData(), static_cast<uint8*>(TargetArray) + Size * ArrayProp->ElementSize, NewArrayNum * ArrayProp->ElementSize);

	return ResultArray;
}

//STUBS

static void ArrayDrop(const TArray<int32>& TargetArray, int32 Size)
{
	check(0);
}

//log
10>EXEC: Error  : Task failed with exit code: 2
10>NumericBPLibrary.h(516): Error C2039 : 'TCppType': is not a member of 'UIntProperty'
10>UnrealTypePrivate.h(252): Reference C2039 : see declaration of 'UIntProperty'
10>NumericBPLibrary.h(516): Error C2065 : 'TCppType': undeclared identifier
10>NumericBPLibrary.h(516): Error C2146 : syntax error: missing ';' before identifier 'Size'
10>NumericBPLibrary.h(516): Error C2065 : 'Size': undeclared identifier
10>NumericBPLibrary.h(516): Error C2039 : 'GetDefaultPropertyValue': is not a member of 'UIntProperty'
10>UnrealTypePrivate.h(252): Reference C2039 : see declaration of 'UIntProperty'
10>NumericBPLibrary.h(516): Error C3861 : 'GetDefaultPropertyValue': identifier not found
10>NumericBPLibrary.h(519): Error C2065 : 'Size': undeclared identifier
Cache statistic: hit 0 of 0 (0 %), remote 0, read 0, write 0, total 0
10>ERROR: Error  : Build failed
Total time in XGE executor: 30.60 seconds
Total execution time: 33.20 seconds
10>Microsoft.MakeFile.Targets(44,5): Error MSB3073 : The command "C:\ue53\UE_5.3\Engine\Build\BatchFiles\Build.bat LUGINEditor Win64 Development -Project="D:\OneDrive\Escritorio\LUGIN\LUGIN.uproject" -WaitMutex -FromMsBuild" exited with code 6.
2

What engine version is this ?

You should probably be using FArrayProperty / FIntProperty instead of UArrayProperty / UIntProperty now.

You might also have to drop the TArray<int32> as a return value, and use an Out parameter instead, so you can also flag it with ArrayParm and ArrayTypeDependentParams. Something like this :

UFUNCTION(BlueprintCallable, CustomThunk, Meta=(ArrayParm="SourceArray,DestArray", ArrayTypeDependentParams="DestArray"))
static void ArrayDrop(const TArray<int32>& SourceArray, int32 Size, TArray<int32>& DestArray);

Look at functions Array_Identical or Array_Append from KismetArrayLibrary for more reference.

3

will try, using 5.3.2