UE4 C++ Able to use TArray but not TQueue

Development Programming & Scripting C++
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#1

In UE4 I know how to create a class.
I’ve made many just haven’t had to use a queue until today.

Here’s an example of what I’m making to try to get a TQueue in a test class.

   #pragma once
   
   // include files

   #include "MyObject.generated.h"

   // forward declare classes
   class MySecondObject;
   
   UCLASS( ClassGroup=(Custom),meta=(BlueprintSpawnableComponent) )
   class MYGAME_API MyObject : public UObject
   {
      GENERATED_BODY()
   
   public:
    // add your constructors, ext
   
    // my vars

   };

So here’s my problem.
How come I can add a container of TArray and it compiles fine
Example:

In the includes section I add

#include "Public/Containers/Array.h"

Under the vars section
I can add something like this this

UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "MySpecialClass")
TArray<MySecondObject*> m_Array;

The above compiles fine.

But if I use a TQueue which is what I need,

#include "Public/Containers/Queue.h"

and variable

UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "MySpecialClass")
TQueue<MySecondObject*> m_Queue;

I get a compile error of
error :
Unrecognized type ‘TQueue’ - type must be a UCLASS, USTRUCT or UENUM

I’m not understanding why this is occurring.

#2

Your MySecondObject class is not UCLASS, or it’s not inherited from UObject, check your header of that class.

#3

in the game engine code i see examples of them using ints floats ext in the TQueue no problem I also changed the logic just to test it and replaced my TQueue to be a TQueue< int32 >. This is identically done in the game engine.
Example
Engine\Plugins\Online\OnlineSubsystemUtils\Source\OnlineSubsystemUtils\Public\VoicePacketBuffer.h
And still this gives the same error.

#4

TQueue cannot be a UPROPERTY. It will work fine if you just remove the property declaration above.

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