std::wcsxfrm

 

C++

Linguaggio

Concetti

Libreria di Utilità

Stringhe

Contenitori

Algoritmi

Iteratori

Libreria matematca

Input/output

Localizzazione

Espressioni regolari(C++11)

Operazioni atomicche(C++11)

Multithreading(C++11)

 

Stringhe libreria

Null-stringhe terminate Original: Null-terminated strings The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Byte stringhe

Multibyte stringhe

Stringhe larghe

Classi Original: Classes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_string

char_traits

 

Stringhe larghe null-terminated

Funzioni Original: Functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Carattere manipolazione Original: Character manipulation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
iswalnum iswalpha iswlower iswupper iswdigit iswxdigit iswblank (C++11) wctype iswctype	iswcntrl iswgraph iswspace iswprint iswpunct towlower towupper wctrans towctrans
Le conversioni in formati numerici Original: Conversions to numeric formats The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
wcstol wcstoll wcstoul wcstoull	wcstof wcstod wcstold
Della gestione delle stringhe Original: String manipulation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
wcslen wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp	wcsxfrm wcschr wcsrchr wcspbrk wcsspn wcscspn wcsstr wcstok
Matrice manipolazione Original: Array manipulation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
wmemcpy
wmemmove
wmemcmp
wmemchr
wmemset

 

Elemento definito nell'header <cwchar>
std::size_t strxfrm(constwchar_t* dest, constwchar_t* src, std::size_t count );

Trasforma la stringa null-terminated larga puntata da src nel nostro modulo di attuazione definiti in modo tale che confrontare due stringhe trasformate con std::wcscmp dà lo stesso risultato confrontando le stringhe originali con std::wcscoll, nella versione locale corrente C.

Original:

Transforms the null-terminated wide string pointed to by src into the implementation-defined form such that comparing two transformed strings with std::wcscmp gives the same result as comparing the original strings with std::wcscoll, in the current C locale.

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I caratteri count prima della stringa trasformate vengono scritte destinazione, compreso il carattere nullo finale, e la lunghezza della stringa completa trasformata viene restituito, escluso il carattere nullo finale.

Original:

The first count characters of the transformed string are written to destination, including the terminating null character, and the length of the full transformed string is returned, excluding the terminating null character.

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Se count è ​0​, allora dest è permesso di essere un puntatore nullo.

Original:

If count is ​0​, then dest is allowed to be a null pointer.

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Note

La lunghezza corretta del buffer che può ricevere l'intera stringa è trasformato 1+std::wcsxfrm(NULL, src, 0)

Original:

The correct length of the buffer that can receive the entire transformed string is 1+std::wcsxfrm(NULL, src, 0)

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Parametri

dest	-	puntatore al primo elemento di un ampio stringa con terminazione null per scrivere la stringa trasformato Original: pointer to the first element of a wide null-terminated string to write the transformed string to The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
src	-	puntatore alla stringa con terminazione null di caratteri estesi da trasformare Original: pointer to the null-terminated wide character string to transform The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
count	-	numero massimo di caratteri da scrivere Original: maximum number of characters to output The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Valore di ritorno

La lunghezza della stringa trasformato largo, escluso il carattere di terminazione null-.

Original:

The length of the transformed wide string, not including the terminating null-character.

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Esempio

#include <iostream>#include <cwchar>   int main(){std::setlocale(LC_ALL, "sv_SE.utf8");   std::wstring in1 = L"\u00e5r";std::wstring out1(1+std::wcsxfrm(nullptr, in1.c_str(), 0), L' ');std::wstring in2 = L"\u00e4ngel";std::wstring out2(1+std::wcsxfrm(nullptr, in2.c_str(), 0), L' ');   std::wcsxfrm(&out1[0], in1.c_str(), out1.size()); std::wcsxfrm(&out2[0], in2.c_str(), out2.size());   std::wcout<<"In the Swedish locale: ";if(out1 < out2)std::wcout<< in1 <<" before "<< in2 <<'\n';elsestd::wcout<< in2 <<" before "<< in1 <<'\n';   std::wcout<<"In lexicographical comparison: ";if(in1 < in2)std::wcout<< in1 <<" before "<< in2 <<'\n';elsestd::wcout<< in2 <<" before "<< in1 <<'\n';   }

Output:

In the Swedish locale: år before ängel In lexicographical comparison: ängel before år

Vedi anche

strxfrm	trasformare una stringa in modo che strcmp produrrebbe lo stesso risultato strcoll Original: transform a string so that strcmp would produce the same result as strcoll The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (funzione)
do_transform [virtuale]	trasforma una stringa in modo che confronto può essere sostituito da confronto 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. (virtuale protetto funzione of std::collate membro)
wcscoll	confronta due stringhe larghe in accordo con i parametri locali Original: compares two wide strings in accordance to the current locale The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (funzione)
C documentation for wcsxfrm