tmp/tmp7qw6y6y2/{from.md → to.md}
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#### Assignment <a id="util.smartptr.weak.assign">[[util.smartptr.weak.assign]]</a>
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``` cpp
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weak_ptr& operator=(const weak_ptr& r) noexcept;
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template<class Y> weak_ptr& operator=(const weak_ptr<Y>& r) noexcept;
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template<class Y> weak_ptr& operator=(const shared_ptr<Y>& r) noexcept;
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```
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*Effects:* Equivalent to `weak_ptr(r).swap(*this)`.
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*Remarks:* The implementation may meet the effects (and the implied
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guarantees) via different means, without creating a temporary object.
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*Returns:* `*this`.
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``` cpp
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weak_ptr& operator=(weak_ptr&& r) noexcept;
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template<class Y> weak_ptr& operator=(weak_ptr<Y>&& r) noexcept;
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```
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##### Assignment <a id="util.smartptr.weak.assign">[[util.smartptr.weak.assign]]</a>
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``` cpp
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weak_ptr& operator=(const weak_ptr& r) noexcept;
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template<class Y> weak_ptr& operator=(const weak_ptr<Y>& r) noexcept;
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template<class Y> weak_ptr& operator=(const shared_ptr<Y>& r) noexcept;
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```
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*Effects:* Equivalent to `weak_ptr(r).swap(*this)`.
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*Returns:* `*this`.
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*Remarks:* The implementation may meet the effects (and the implied
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guarantees) via different means, without creating a temporary object.
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``` cpp
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weak_ptr& operator=(weak_ptr&& r) noexcept;
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template<class Y> weak_ptr& operator=(weak_ptr<Y>&& r) noexcept;
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```
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