std::numpunct_byname is a std::numpunct facet which encapsulates numeric punctuation preferences of a locale specified at its construction.
The standard library is guaranteed to provide the following specializations:
std::numpunct_byname<char> locale-specific std::numpunct facet for narrow character I/O std::numpunct_byname<wchar_t> locale-specific std::numpunct facet for wide character I/O [edit] Nested types [edit] Member functions constructs a newnumpunct_byname facet
numpunct_byname facet
Constructs a new std::numpunct_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::numpunct_byname::~numpunct_bynameprotected:
~numpunct_byname();
Destroys the facet.
Inherited from std::numpunct Nested types [edit] Data members Member functions invokesdo_decimal_point
std::numpunct<CharT>) [edit] invokes do_thousands_sep
std::numpunct<CharT>) [edit] invokes do_grouping
std::numpunct<CharT>) [edit] invokes do_truename or do_falsename
std::numpunct<CharT>) [edit] Protected member functions provides the character to use as decimal point
std::numpunct<CharT>) [edit] provides the character to use as thousands separator
std::numpunct<CharT>) [edit] provides the numbers of digits between each pair of thousands separators
std::numpunct<CharT>) [edit] provides the string to use as the name of the boolean true and false
std::numpunct<CharT>) [edit] [edit] Example
This example demonstrates how to apply numeric punctuation rules of another language without changing the rest of the locale.
#include <iostream>
#include <locale>
int main()
{
const double number = 1000.25;
std::wcout << L"default locale: " << number << L'\n';
std::wcout.imbue(std::locale(std::wcout.getloc(),
new std::numpunct_byname<wchar_t>("ru_RU.UTF8")));
std::wcout << L"default locale with russian numpunct: " << number << L'\n';
}
Output:
default locale: 1000.25 default locale with russian numpunct: 1 000,25[edit] See also
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