std::wcscoll

`<cwchar>`
`int wcscoll( const wchar_t* lhs, const wchar_t* rhs );`

, std::setlocale, LC_COLLATE.

lhs, rhs

, lhs () rhs.

0, lhs rhs.

, lhs ( ) rhs.

: ( ) , . , . . , "ch" "h" "i", "dzs" "dz" "g".

#include <clocale>
#include <iostream>

void try_compare(const wchar_t* p1, const wchar_t* p2)
{
    if (std::wcscoll(p1, p2) < 0)
        std::wcout << p1 << L"  " << p2 << '\n';
    else
        std::wcout << p2 << L"  " << p1 << '\n';
}

int main()
{
    std::setlocale(LC_ALL, "en_US.utf8");
    std::wcout << L"  : ";
    try_compare(L"hrnec", L"chrt");

    std::setlocale(LC_COLLATE, "cs_CZ.utf8");
    std::wcout << L"  : ";
    try_compare(L"hrnec", L"chrt");

    std::setlocale(LC_COLLATE, "en_US.utf8");
    std::wcout << L"  : ";
    try_compare(L"r", L"ngel");

    std::setlocale(LC_COLLATE, "sv_SE.utf8");
    std::wcout << L"  : ";
    try_compare(L"r", L"ngel");
}

:

  : chrt before hrnec
  : hrnec before chrt
  : ngel before r
  : r before ngel

strcoll	() []
do_compare [virtual]	: compares two strings using this facet's collation rules Google. . . (virtual protected `std::collate` -) []
wcsxfrm	, wcscmp , wcscoll () []
C wcscoll







(C++20)

(C++20)
(C++11)





(C++20)


/

(C++11)
(C++11)
(C++11)
(C++17)

cppreference.com

std::wcscoll