std::collate – cppreference.com

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definiert in Header `<locale>`

`template< class CharT > class collate;`

Klasse std::collate kapselt locale-spezifischen Zusammenstellung (Vergleich) und Hashing von Strings. Diese Facette durch std::basic_regex verwendet und können angewendet, mittels std::locale::operator() werden, direkt zu allen Standard-Algorithmen, die eine Zeichenfolge Vergleichsprädikat erwarten .

Original:

Class std::collate encapsulates locale-specific collation (comparison) and hashing of strings. This facet is used by std::basic_regex and can be applied, by means of std::locale::operator(), directly to all standard algorithms that expect a string comparison predicate.

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Inheritance diagram

Zwei Spezialisierungen werden durch die Standard-Bibliothek zur Verfügung gestellt und werden von allen locale Objekte in einem C + +-Programm erstellt implementiert:

Original:

Two specializations are provided by the standard library and are implemented by all locale objects created in a C++ program:

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`std::collate<char>`	Geräte lexikographische Ordnung der Byte-Strings Original: implements lexicographical ordering of byte strings The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

`std::collate<wchar_t>`	Geräte lexikographische Ordnung der breiten Strings Original: implements lexicographical ordering of wide strings The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Mitglied Typen


Mitglied Typ Original: Member type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.	Definition

`char_type`	`charT`

`string_type`	`std::basic_string<charT>`

Member-Funktionen


(constructor)	baut eine neue Sortierfunktion Facette Original: constructs a new collate facet The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (öffentliche Elementfunktion)

(destructor)	zerstört sich eine Sortierfunktion Facette Original: destructs a collate facet The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (geschützt Member-Funktion)

compare	Beruft `do_compare` Original: invokes `do_compare` The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (öffentliche Elementfunktion) [edit]

transform	Beruft `do_transform` Original: invokes `do_transform` The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (öffentliche Elementfunktion) [edit]

hash	Beruft `do_hash` Original: invokes `do_hash` The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (öffentliche Elementfunktion) [edit]

Mitglied widerspricht


static std::locale::id id	ID des Gebietsschemas Original: id of the locale The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (öffentliche Member-Objekt)

Geschützt Member-Funktionen


do_compare [virtuell]	vergleicht zwei Strings mit dieser Facette der Kollatierung Regeln Original: compares two strings using this facet's collation rules The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (virtuellen geschützten Member-Funktion) [edit]

do_transform [virtuell]	wandelt einen String, so dass collation durch Vergleich ersetzt werden können Original: transforms a string so that collation can be replaced by comparison The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (virtuellen geschützten Member-Funktion) [edit]

do_hash [virtuell]	erzeugt einen Integer-Hash-Wert mit dieser Facette der Kollatierung Regeln Original: generates an integer hash value using this facet's collation rules The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (virtuellen geschützten Member-Funktion) [edit]

Beispiel

#include <locale>
#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
int main()
{
    std::wcout.imbue(std::locale(""));
    std::vector<std::wstring> v = {L"ar", L"zebra", L"\u00f6grupp", L"Zebra", L"\u00e4ngel",
                                   L"\u00e5r", L"f\u00f6rnamn"};

    std::wcout << "Default locale collation order: ";
    std::sort(v.begin(), v.end());
    for(auto s : v) std::wcout << s << ' '; std::wcout << '\n';

    std::wcout << "English locale collation order: ";
    std::sort(v.begin(), v.end(), std::locale("en_US.UTF-8"));
    for(auto s : v) std::wcout << s << ' '; std::wcout << '\n';

    std::wcout << "Swedish locale collation order: ";
    std::sort(v.begin(), v.end(), std::locale("sv_SE.UTF-8"));
    for(auto s : v) std::wcout << s << ' '; std::wcout << '\n';
}

Output:

Default locale collation order: Zebra ar förnamn zebra ängel år ögrupp
English locale collation order: ängel ar år förnamn ögrupp zebra Zebra
Swedish locale collation order: ar förnamn zebra Zebra år ängel ögrupp

Siehe auch


	lexicographically compares two strings using this locale's collate facet (öffentliche Elementfunktion of `std::locale`) [edit]

	schafft eine Sortierfunktion Facette für die benannte locale Original: creates a collate facet for the named locale The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Klassen-Template)