From Jason Turner

[string.view.iterators]

C++17 → C++20 1.7 KB 22 lines
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Archived: C++17 | C++20
Markdown: C++17 | C++20
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tmp/tmpjngyqiqh/{from.md → to.md} RENAMED
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  ``` cpp
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  using const_iterator = implementation-defined // type of basic_string_view::const_iterator;
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  ```
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- A type that meets the requirements of a constant random access
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- iterator ([[random.access.iterators]]) and of a contiguous
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- iterator ([[iterator.requirements.general]]) whose `value_type` is the
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- template parameter `charT`.
 
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- For a `basic_string_view str`, any operation that invalidates a pointer
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- in the range \[`str.data()`, `str.data() + str.size()`) invalidates
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- pointers, iterators, and references returned from `str`’s methods.
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-
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- All requirements on container iterators ([[container.requirements]])
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- apply to `basic_string_view::const_iterator` as well.
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  ``` cpp
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  constexpr const_iterator begin() const noexcept;
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  constexpr const_iterator cbegin() const noexcept;
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  ```
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  *Returns:* An iterator such that
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- - if `!empty()`, `&*begin() == data_`,
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  - otherwise, an unspecified value such that \[`begin()`, `end()`) is a
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  valid range.
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  ``` cpp
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  constexpr const_iterator end() const noexcept;
 
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  ``` cpp
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  using const_iterator = implementation-defined // type of basic_string_view::const_iterator;
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  ```
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+ A type that meets the requirements of a constant
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+ *Cpp17RandomAccessIterator*[[random.access.iterators]], models
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+ `contiguous_iterator` [[iterator.concept.contiguous]], and meets the
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+ constexpr iterator requirements [[iterator.requirements.general]], whose
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+ `value_type` is the template parameter `charT`.
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+ All requirements on container iterators [[container.requirements]] apply
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+ to `basic_string_view::const_iterator` as well.
 
 
 
 
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  ``` cpp
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  constexpr const_iterator begin() const noexcept;
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  constexpr const_iterator cbegin() const noexcept;
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  ```
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  *Returns:* An iterator such that
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+ - if `!empty()`, `addressof(*begin()) == data_`,
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  - otherwise, an unspecified value such that \[`begin()`, `end()`) is a
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  valid range.
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  ``` cpp
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  constexpr const_iterator end() const noexcept;