tmp/tmp2nc_9t_w/{from.md → to.md}
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## Requirements <a id="re.req">[[re.req]]</a>
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This subclause defines requirements on classes representing regular
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expression traits.
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[*Note 1*: The class template `regex_traits`, defined in
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The class template `basic_regex`, defined in
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-
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semantics. These types and functions are provided as a set of member
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*typedef-name*s and functions in the template parameter `traits` used by
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the `basic_regex` class template. This subclause defines the semantics
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of these members.
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To specialize class template `basic_regex` for a character container
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`CharT` and its related regular expression traits class `Traits`, use
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`basic_regex<CharT, Traits>`.
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In
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X`; `p` is a value of type `const charT*`; `I1` and `I2` are input
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iterators
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[[forward.iterators]]
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object of type `X::string_type`; `cs` is an object of type
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`const X::string_type`; `b` is a value of type `bool`; `I` is a value of
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type `int`; `cl` is an object of type `X::char_class_type`, and `loc` is
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an object of type `X::locale_type`.
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[*Note 2*: The value of *I* will only be 8, 10, or 16. — *end note*]
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[*Note 3*: Class template `regex_traits`
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`wchar_t`. This class template is described in the header `<regex>`, and
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is described in
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## Requirements <a id="re.req">[[re.req]]</a>
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This subclause defines requirements on classes representing regular
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expression traits.
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[*Note 1*: The class template `regex_traits`, defined in [[re.traits]],
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meets these requirements. — *end note*]
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The class template `basic_regex`, defined in [[re.regex]], needs a set
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of related types and functions to complete the definition of its
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semantics. These types and functions are provided as a set of member
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*typedef-name*s and functions in the template parameter `traits` used by
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the `basic_regex` class template. This subclause defines the semantics
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of these members.
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To specialize class template `basic_regex` for a character container
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`CharT` and its related regular expression traits class `Traits`, use
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`basic_regex<CharT, Traits>`.
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In [[re.req]] `X` denotes a traits class defining types and functions
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for the character container type `charT`; `u` is an object of type `X`;
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`v` is an object of type `const
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X`; `p` is a value of type `const charT*`; `I1` and `I2` are input
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iterators [[input.iterators]]; `F1` and `F2` are forward iterators
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[[forward.iterators]]; `c` is a value of type `const charT`; `s` is an
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object of type `X::string_type`; `cs` is an object of type
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`const X::string_type`; `b` is a value of type `bool`; `I` is a value of
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type `int`; `cl` is an object of type `X::char_class_type`, and `loc` is
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an object of type `X::locale_type`.
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[*Note 2*: The value of *I* will only be 8, 10, or 16. — *end note*]
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[*Note 3*: Class template `regex_traits` meets the requirements for a
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regular expression traits class when it is specialized for `char` or
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`wchar_t`. This class template is described in the header `<regex>`, and
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is described in [[re.traits]]. — *end note*]
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