cppdraft_translate/cppdraft/indirect/obs.md

[indirect.obs]

20 Memory management library [mem]

20.4 Types for composite class design [mem.composite.types]

20.4.1 Class template indirect [indirect]

20.4.1.6 Observers [indirect.obs]

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constexpr const T& operator*() const & noexcept; constexpr T& operator*() & noexcept;

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Preconditions: *this is not valueless.

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Returns: *p.

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constexpr const T&& operator*() const && noexcept; constexpr T&& operator*() && noexcept;

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Preconditions: *this is not valueless.

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Returns: std​::​move(*p).

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constexpr const_pointer operator->() const noexcept; constexpr pointer operator->() noexcept;

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Preconditions: *this is not valueless.

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Returns: p.

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constexpr bool valueless_after_move() const noexcept;

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Returns: true if *this is valueless, otherwise false.

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constexpr allocator_type get_allocator() const noexcept;

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Returns: alloc.