watchable_lifetime.h

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#pragma once
 
#include <liboscar/utilities/lifetime_watcher.h>
 
#include <concepts>
 
namespace osc
{
    // satisfied if `T` is an object that can have its lifetime watched
    template<typename T>
    concept WatchableLifetime = requires(const T& lifetime)
    {
        { lifetime.watch() } -> std::convertible_to<LifetimeWatcher>;
    };
}