Void.h

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/** @noop License Comment
 *  @file
 *  @copyright
 *  This Source Code is subject to the terms of the Mozilla Public License, v2.0.
 *  If a copy of the MPL was not distributed with this file You can obtain one at
 *  https://mozilla.org/MPL/2.0/
 *  
 *  @author David Mórász
 *  @date 2025
 */
 
/**
 *  @file
 *  Use these two structs for dummy types or when it is easier to have explicit return types than dealing with void
 *  specializations in templates
 */
 
#pragma once
 
/** This struct may be only used in decltype or templating situations when definition is not required */
struct FDeclareOnly;
 
/** This struct may be used for situations where something needs to be returned but it's not meaningful to do so. */
struct MCRO_API FVoid
{
    /** A constructor which accepts any arguments and does nothing with them */
    template <typename... Args>
    FVoid(Args&&...) {}
};