const_container/include/CompileOptional.h

32 lines
566 B
C++

//
// Created by Patrick Maschek on 22.01.2024.
//
#ifndef CONST_CONTAINER_COMPILEOPTIONAL_H_
#define CONST_CONTAINER_COMPILEOPTIONAL_H_
#include <type_traits>
namespace cc {
template<typename, bool Cond = false>
class CompileOptional {};
template<typename T>
class CompileOptional<T, false> {
public:
using defined = std::false_type;
};
template<typename T>
class CompileOptional<T, true> {
public:
using defined = std::true_type;
operator T&() { return _data; }
private:
T _data;
};
}
#endif //CONST_CONTAINER_COMPILEOPTIONAL_H_