std::char_traits< _CharT >

Section: C Library Functions (3)
Updated: Wed Apr 17 2019
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NAME

std::char_traits< _CharT > - Basis for explicit traits specializations.

SYNOPSIS

Inherits __gnu_cxx::char_traits< _CharT >.

Inherited by __gnu_cxx::encoding_char_traits< _CharT >.

Public Types

typedef _CharT char_type

typedef _Char_types< _CharT >::int_type int_type

typedef _Char_types< _CharT >::off_type off_type

typedef _Char_types< _CharT >::pos_type pos_type

typedef _Char_types< _CharT >::state_type state_type

Static Public Member Functions

static _GLIBCXX14_CONSTEXPR void assign (char_type &__c1, const char_type &__c2)

static char_type * assign (char_type *__s, std::size_t __n, char_type __a)

static _GLIBCXX14_CONSTEXPR int compare (const char_type *__s1, const char_type *__s2, std::size_t __n)

static char_type * copy (char_type *__s1, const char_type *__s2, std::size_t __n)

static constexpr int_type eof ()

static constexpr bool eq (const char_type &__c1, const char_type &__c2)

static constexpr bool eq_int_type (const int_type &__c1, const int_type &__c2)

static _GLIBCXX14_CONSTEXPR const char_type * find (const char_type *__s, std::size_t __n, const char_type &__a)

static _GLIBCXX14_CONSTEXPR std::size_t length (const char_type *__s)

static constexpr bool lt (const char_type &__c1, const char_type &__c2)

static char_type * move (char_type *__s1, const char_type *__s2, std::size_t __n)

static constexpr int_type not_eof (const int_type &__c)

static constexpr char_type to_char_type (const int_type &__c)

static constexpr int_type to_int_type (const char_type &__c)

Detailed Description

template<class _CharT>

struct std::char_traits< _CharT >" Basis for explicit traits specializations.

Note:

: For any given actual character type, this definition is probably wrong. Since this is just a thin wrapper around __gnu_cxx::char_traits, it is possible to achieve a more appropriate definition by specializing __gnu_cxx::char_traits.

See https://gcc.gnu.org/onlinedocs/libstdc++/manual/strings.html#strings.string.character_types for advice on how to make use of this class for unusual character types. Also, check out include/ext/pod_char_traits.h.

Definition at line 271 of file char_traits.h.

Author

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