std::moneypunct_byname

 

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Concepts library (C++20)

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Technical Specifications

 

Localizations library

Locales and facets
locale
use_facet	has_facet
Character classification
isspace isblank (C++11) iscntrl isupper islower isalpha	isdigit ispunct isxdigit isalnum isprint isgraph
Conversions
toupper tolower	wstring_convert (C++11) wbuffer_convert (C++11)
Facet category base classes
ctype_base codecvt_base messages_base	time_base money_base
Facet categories
ctype ctype<char> codecvt collate messages time_get time_put	num_get num_put numpunct money_get money_put moneypunct
Locale-specific facets
ctype_byname codecvt_byname messages_byname collate_byname	time_get_byname time_put_byname numpunct_byname moneypunct_byname
Code conversion facets
codecvt_utf8 (C++11) codecvt_utf16 (C++11)	codecvt_utf8_utf16 (C++11) codecvt_mode (C++11)
C locale
setlocale localeconv lconv	LC_ALLLC_COLLATELC_CTYPELC_MONETARYLC_NUMERICLC_TIME

 

Defined in header <locale>
template< class CharT, bool Intl = false > class moneypunct_byname : public std::moneypunct<CharT, Intl>;

std::moneypunct_byname is a std::moneypunct facet which encapsulates monetary formatting preferences of a locale specified at its construction.

Two specializations are provided by the standard library

Defined in header <locale>
std::moneypunct_byname<char, Intl>	locale-specific std::moneypunct facet for narrow character I/O
std::moneypunct_byname<wchar_t, Intl>	locale-specific std::moneypunct facet for wide character I/O

Member types

Member type	Definition
pattern	std::money_base::pattern
string_type	std::basic_string<CharT>

Member functions

(constructor)	constructs a new moneypunct_byname facet (public member function)
(destructor)	destroys a moneypunct_byname facet (protected member function)

std::moneypunct_byname::moneypunct_byname

explicit moneypunct_byname( const char* name, std::size_t refs = 0 );
explicit moneypunct_byname( const std::string& name, std::size_t refs = 0 );		(since C++11)

Constructs a new std::moneypunct_byname facet for a locale with name.

refs is used for resource management: if refs == 0, the implementation destroys the facet, when the last std::locale object holding it is destroyed. Otherwise, the object is not destroyed.

Parameters

name	-	the name of the locale
refs	-	the number of references that link to the facet

std::moneypunct_byname::~moneypunct_byname

protected: ~moneypunct_byname();

Destroys the facet.

Inherited from std::moneypunct

Member types

Member type	Definition
char_type	CharT
string_type	std::basic_string<CharT>

Member functions

decimal_point	invokes do_decimal_point (public member function of std::moneypunct<CharT,International>)
thousands_sep	invokes do_thousands_sep (public member function of std::moneypunct<CharT,International>)
grouping	invokes do_grouping (public member function of std::moneypunct<CharT,International>)
curr_symbol	invokes do_curr_symbol (public member function of std::moneypunct<CharT,International>)
positive_signnegative_sign	invokes do_positive_sign or do_negative_sign (public member function of std::moneypunct<CharT,International>)
frac_digits	invokes do_frac_digits (public member function of std::moneypunct<CharT,International>)
pos_formatneg_format	invokes do_pos_format/do_neg_format (public member function of std::moneypunct<CharT,International>)

Protected member functions

do_decimal_point [virtual]	provides the character to use as decimal point (virtual protected member function of std::moneypunct<CharT,International>)
do_thousands_sep [virtual]	provides the character to use as thousands separator (virtual protected member function of std::moneypunct<CharT,International>)
do_grouping [virtual]	provides the numbers of digits between each pair of thousands separators (virtual protected member function of std::moneypunct<CharT,International>)
do_curr_symbol [virtual]	provides the string to use as the currency identifier (virtual protected member function of std::moneypunct<CharT,International>)
do_positive_signdo_negative_sign [virtual]	provides the string to indicate a positive or negative value (virtual protected member function of std::moneypunct<CharT,International>)
do_frac_digits [virtual]	provides the number of digits to display after the decimal point (virtual protected member function of std::moneypunct<CharT,International>)
do_pos_formatdo_neg_format [virtual]	provides the formatting pattern for currency values (virtual protected member function of std::moneypunct<CharT,International>)

Member constants

Member	Definition
const bool intl (static)	International

Member objects

static std::locale::id id

id of the locale (public member object)

Inherited from std::money_base

Member type	Definition
enum part { none, space, symbol, sign, value };	unscoped enumeration type
struct pattern { char field[4]; };	the monetary format type

Enumeration constant	Definition
none	whitespace is permitted but not required except in the last position, where whitespace is not permitted
space	one or more whitespace characters are required
symbol	the sequence of characters returned by moneypunct::curr_symbol is required
sign	the first of the characters returned by moneypunct::positive_sign or moneypunct::negative_sign is required
value	the absolute numeric monetary value is required

Example

This example demonistrates how to apply monetary formatting rules of another language without changing the rest of the locale.

Run this code

#include <iostream>
#include <iomanip>
#include <locale>
int main()
{
    long double mon = 1234567;
    std::locale::global(std::locale("en_US.utf8"));
    std::wcout.imbue(std::locale());
    std::wcout << L"american locale : " << std::showbase
               << std::put_money(mon) << '\n';
    std::wcout.imbue(std::locale(std::wcout.getloc(),
                                 new std::moneypunct_byname<wchar_t>("ru_RU.utf8")));
    std::wcout << L"american locale with russian moneypunct: "
               << std::put_money(mon) << '\n';
}

Output:

american locale : $12,345.67
american locale with russian moneypunct: 12 345.67 руб

See also

moneypunct

defines monetary formatting parameters used by std::money_get and std::money_put (class template)