weak_ref

A weak_ref:

• is a non-owning-reference, i.e. a live weak_ref can become an expired weak_ref due to action at a distance
• can be converted to an owning strong_ref.

For example:

Type	strong_ref<Type>
std::weak_ptr<T>	✅
std::shared_ptr<T>	❌
T*	❌

Example

#include <FredEmmott/weak_refs.hpp>

using namespace FredEmmott::weak_refs;

static_assert(weak_ref<std::weak_ptr<int>>);
static_assert(!weak_ref<std::shared_ptr<int>>);
static_assert(!weak_ref<int*>);