tmp/tmp0humlbv9/{from.md → to.md}
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| 1 |
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#### `node_handle` observers <a id="container.node.observers">[[container.node.observers]]</a>
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``` cpp
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value_type& value() const;
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```
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*Requires:* `empty() == false`.
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*Returns:* A reference to the `value_type` subobject in the
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`container_node_type` object pointed to by `ptr_`.
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*Throws:* Nothing.
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``` cpp
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key_type& key() const;
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```
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*Requires:* `empty() == false`.
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*Returns:* A non-const reference to the `key_type` member of the
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`value_type` subobject in the `container_node_type` object pointed to by
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`ptr_`.
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*Throws:* Nothing.
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*Remarks:* Modifying the key through the returned reference is
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permitted.
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``` cpp
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mapped_type& mapped() const;
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```
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*Requires:* `empty() == false`.
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*Returns:* A reference to the `mapped_type` member of the `value_type`
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subobject in the `container_node_type` object pointed to by `ptr_`.
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*Throws:* Nothing.
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``` cpp
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allocator_type get_allocator() const;
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```
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*Requires:* `empty() == false`.
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*Returns:* `*alloc_`.
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*Throws:* Nothing.
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``` cpp
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explicit operator bool() const noexcept;
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```
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*Returns:* `ptr_ != nullptr`.
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``` cpp
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bool empty() const noexcept;
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```
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*Returns:* `ptr_ == nullptr`.
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