src/interfaces/observable.hpp


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#pragma once

#include <functional>

using Callback = std::function<void()>;

template <typename Event>
class IObservable
{
public:
	virtual ~IObservable() = default;

	virtual void listen() const = 0;

	virtual void attach(const Event &event, Callback callback) = 0;

	virtual void notify(const Event &event) const = 0;
};