Varianti

    std::get_time

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    <metanoindex/>

     
    C++
     
    Ingresso / libreria di output
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    Buffer
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    Buffers
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    basic_streambuf
    basic_filebuf
    basic_stringbuf
    strstreambuf(deprecato)
    Streams
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    Streams
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    Astrazioni
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    Abstractions
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    ios_base
    basic_ios
    basic_istream
    basic_ostream
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    File I / O
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    File I/O
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    basic_ifstream
    basic_ofstream
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    String I / O
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    String I/O
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    basic_istringstream
    basic_ostringstream
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    Array I / O
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    Array I/O
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    istrstream(deprecato)
    ostrstream(deprecato)
    strstream(deprecato)
    Tipi
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    Types
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    streamoff
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    Errore categoria interfaccia
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    Error category interface
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    iostream_category(C++11)
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    Ingresso / uscita manipolatori
    Virgola mobile formattazione
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    Floating-point formatting
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    Formattazione Integer
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    Integer formatting
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    Boolean formatting
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    boolalpha
    noboolalpha
    Larghezza del campo e il controllo di riempimento
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    Field width and fill control
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    Di formattazione
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    Other formatting
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    Elaborazione degli spazi vuoti
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    Whitespace processing
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    Output flushing
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    Status flags manipulation
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    Tempo e denaro I / O
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    Time and money I/O
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    get_money(C++11)
    get_time(C++11)
    put_money(C++11)
    put_time(C++11)
     
    <tbody> </tbody>
    Elemento definito nell'header <iomanip>
    template< class CharT > /*unspecified*/ get_time( std::tm* tmb, const CharT* fmt);
    		 (dal C++11)
    Quando viene utilizzato in un in >> get_time(tmb, fmt) espressione, analizza l'input di caratteri come un valore data / ora secondo la stringa di formato fmt secondo l'aspetto std::time_get del locale attualmente intriso nel out flusso di output. Il valore risultante è memorizzata in un oggetto std::tm puntato da tmb.
    Original:
    When used in an expression in >> get_time(tmb, fmt), parses the character input as a date/time value according to format string fmt according to the std::time_get facet of the locale currently imbued in the output stream out. The resultant value is stored in a std::tm object pointed to by tmb.
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    Parametri

    tmb -
    puntatore valido alla std :: oggetto tm in cui il risultato viene memorizzato
    Original:
    valid pointer to the std::tm object where the result will be stored
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    fmt -
    puntatore ad una stringa con terminazione null alla tabella che specifica il formato di conversione
    La stringa di formato è composto da zero o più identificatori di conversione, gli spazi vuoti e caratteri comuni (ad eccezione %). Ogni carattere ordinario dovrebbe corrispondere un carattere nel flusso di input in case-insensitive confronto. Ogni carattere di spaziatura corrisponde arbitrario spazi nella stringa di input. Ogni specifica di conversione inizia con il carattere %, eventualmente seguita da E o modificatore O (ignorato se non supportato dal locale), seguito dal carattere che determina il comportamento del committente. Il identificatori di formato corrisponde la funzione POSIX strptime():
    Original:
    The format string consists of zero or more conversion specifiers, whitespace characters, and ordinary characters (except %). Each ordinary character is expected to match one character in the input stream in case-insensitive comparison. Each whitespace character matches arbitrary whitespace in the input string. Each conversion specification begins with % character, optionally followed by E or O modifier (ignored if unsupported by the locale), followed by the character that determines the behavior of the specifier. The format specifiers match the POSIX function strptime():
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    Conversion
    specifier     		Explanation Writes to fields
    % matches a literal %. The full conversion specification must be %%. (none)
    t matches any whitespace. (none)
    n matches any whitespace. (none)
    Year
    Y parses full year as a 4 digit decimal number, leading zeroes permitted but not required tm_year
    EY parses year in the alternative representation, e.g.平成23年 (year Heisei 23) which writes 2011 to tm_year in ja_JP locale tm_year
    y parses last 2 digits of year as a decimal number. Range [69,99] results in values 1969 to 1999, range [00,68] results in 2000-2068 tm_year
    Oy parses last 2 digits of year using the alternative numeric system, e.g. 十一 is parsed as 11 in ja_JP locale tm_year
    Ey parses year as offset from locale's alternative calendar period %EC tm_year
    C parses the first 2 digits of year as a decimal number (range [00,99]) tm_year
    EC parses the name of the base year (period) in the locale's alternative representation, e.g. 平成 (Heisei era) in ja_JP tm_year
    Month
    b parses the month name, either full or abbreviated, e.g. Oct tm_mon
    h synonym of b tm_mon
    B synonym of b tm_mon
    m parses the month as a decimal number (range [01,12]), leading zeroes permitted but not required tm_mon
    Om parses the month using the alternative numeric system, e.g. 十二 parses as 12 in ja_JP locale tm_mon
    Week
    U parses the week of the year as a decimal number (Sunday is the first day of the week) (range [00,53]), leading zeroes permitted but not required tm_year, tm_wday, tm_yday
    OU parses the week of the year, as by %U, using the alternative numeric system, e.g. 五十二 parses as 52 in ja_JP locale tm_year, tm_wday, tm_yday
    W parses the week of the year as a decimal number (Monday is the first day of the week) (range [00,53]), leading zeroes permitted but not required tm_year, tm_wday, tm_yday
    OW parses the week of the year, as by %W, using the alternative numeric system, e.g. 五十二 parses as 52 in ja_JP locale tm_year, tm_wday, tm_yday
    Day of the year/month
    j parses day of the year as a decimal number (range [001,366]), leading zeroes permitted but not required tm_yday
    d parses the day of the month as a decimal number (range [01,31]), leading zeroes permitted but not required tm_mday
    Od parses the day of the month using the alternative numeric system, e.g 二十七 parses as 23 in ja_JP locale, leading zeroes permitted but not required tm_mday
    e synonym of d tm_mday
    Oe synonym of Od tm_mday
    Day of the week
    a parses the name of the day of the week, either full or abbreviated, e.g. Fri tm_wday
    A synonym of a tm_wday
    w parses weekday as a decimal number, where Sunday is 0 (range [0-6]) tm_wday
    Ow parses weekday as a decimal number, where Sunday is 0, using the alternative numeric system, e.g. 二 parses as 2 in ja_JP locale tm_wday
    Hour, minute, second
    H parses the hour as a decimal number, 24 hour clock (range [00-23]), leading zeroes permitted but not required tm_hour
    OH parses hour from 24-hour clock using the alternative numeric system, e.g. 十八 parses as 18 in ja_JP locale tm_hour
    I parses hour as a decimal number, 12 hour clock (range [01,12]), leading zeroes permitted but not required tm_hour
    OI parses hour from 12-hour clock using the alternative numeric system, e.g. 六 reads as 06 in ja_JP locale tm_hour
    M parses minute as a decimal number (range [00,59]), leading zeroes permitted but not required tm_min
    OM parses minute using the alternative numeric system, e.g. 二十五 parses as 25 in ja_JP locale tm_min
    S parses second as a decimal number (range [00,60]), leading zeroes permitted but not required tm_sec
    OS parses second using the alternative numeric system, e.g. 二十四 parses as 24 in ja_JP locale tm_sec
    Other
    c parses the locale's standard date and time string format, e.g. Sun Oct 17 04:41:13 2010 (locale dependent) all
    Ec parses the locale's alternative date and time string format, e.g. expecting 平成23年 (year Heisei 23) instead of 2011年 (year 2011) in ja_JP locale all
    x parses the locale's standard date representation all
    Ex parses the locale's alternative date representation, e.g. expecting 平成23年 (year Heisei 23) instead of 2011年 (year 2011) in ja_JP locale all
    X parses the locale's standard time representation all
    EX parses the locale's alternative time representation all
    D equivalent to "%m / %d / %y " tm_mon, tm_mday, tm_year
    r parses locale's standard 12-hour clock time (in POSIX, "%I : %M : %S %p") tm_hour, tm_min, tm_sec
    R equivalent to "%H : %M" tm_hour, tm_min
    T equivalent to "%H : %M : %S" tm_hour, tm_min, tm_sec
    p parses the locale's equivalent of a.m. or p.m. tm_hour
    Original:
    pointer to a null-terminated CharT string specifying the conversion format
    La stringa di formato è composto da zero o più identificatori di conversione, gli spazi vuoti e caratteri comuni (ad eccezione %). Ogni carattere ordinario dovrebbe corrispondere un carattere nel flusso di input in case-insensitive confronto. Ogni carattere di spaziatura corrisponde arbitrario spazi nella stringa di input. Ogni specifica di conversione inizia con il carattere %, eventualmente seguita da E o modificatore O (ignorato se non supportato dal locale), seguito dal carattere che determina il comportamento del committente. Il identificatori di formato corrisponde la funzione POSIX strptime():
    Original:
    The format string consists of zero or more conversion specifiers, whitespace characters, and ordinary characters (except %). Each ordinary character is expected to match one character in the input stream in case-insensitive comparison. Each whitespace character matches arbitrary whitespace in the input string. Each conversion specification begins with % character, optionally followed by E or O modifier (ignored if unsupported by the locale), followed by the character that determines the behavior of the specifier. The format specifiers match the POSIX function strptime():
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    Conversion
    specifier     		Explanation Writes to fields
    % matches a literal %. The full conversion specification must be %%. (none)
    t matches any whitespace. (none)
    n matches any whitespace. (none)
    Year
    Y parses full year as a 4 digit decimal number, leading zeroes permitted but not required tm_year
    EY parses year in the alternative representation, e.g.平成23年 (year Heisei 23) which writes 2011 to tm_year in ja_JP locale tm_year
    y parses last 2 digits of year as a decimal number. Range [69,99] results in values 1969 to 1999, range [00,68] results in 2000-2068 tm_year
    Oy parses last 2 digits of year using the alternative numeric system, e.g. 十一 is parsed as 11 in ja_JP locale tm_year
    Ey parses year as offset from locale's alternative calendar period %EC tm_year
    C parses the first 2 digits of year as a decimal number (range [00,99]) tm_year
    EC parses the name of the base year (period) in the locale's alternative representation, e.g. 平成 (Heisei era) in ja_JP tm_year
    Month
    b parses the month name, either full or abbreviated, e.g. Oct tm_mon
    h synonym of b tm_mon
    B synonym of b tm_mon
    m parses the month as a decimal number (range [01,12]), leading zeroes permitted but not required tm_mon
    Om parses the month using the alternative numeric system, e.g. 十二 parses as 12 in ja_JP locale tm_mon
    Week
    U parses the week of the year as a decimal number (Sunday is the first day of the week) (range [00,53]), leading zeroes permitted but not required tm_year, tm_wday, tm_yday
    OU parses the week of the year, as by %U, using the alternative numeric system, e.g. 五十二 parses as 52 in ja_JP locale tm_year, tm_wday, tm_yday
    W parses the week of the year as a decimal number (Monday is the first day of the week) (range [00,53]), leading zeroes permitted but not required tm_year, tm_wday, tm_yday
    OW parses the week of the year, as by %W, using the alternative numeric system, e.g. 五十二 parses as 52 in ja_JP locale tm_year, tm_wday, tm_yday
    Day of the year/month
    j parses day of the year as a decimal number (range [001,366]), leading zeroes permitted but not required tm_yday
    d parses the day of the month as a decimal number (range [01,31]), leading zeroes permitted but not required tm_mday
    Od parses the day of the month using the alternative numeric system, e.g 二十七 parses as 23 in ja_JP locale, leading zeroes permitted but not required tm_mday
    e synonym of d tm_mday
    Oe synonym of Od tm_mday
    Day of the week
    a parses the name of the day of the week, either full or abbreviated, e.g. Fri tm_wday
    A synonym of a tm_wday
    w parses weekday as a decimal number, where Sunday is 0 (range [0-6]) tm_wday
    Ow parses weekday as a decimal number, where Sunday is 0, using the alternative numeric system, e.g. 二 parses as 2 in ja_JP locale tm_wday
    Hour, minute, second
    H parses the hour as a decimal number, 24 hour clock (range [00-23]), leading zeroes permitted but not required tm_hour
    OH parses hour from 24-hour clock using the alternative numeric system, e.g. 十八 parses as 18 in ja_JP locale tm_hour
    I parses hour as a decimal number, 12 hour clock (range [01,12]), leading zeroes permitted but not required tm_hour
    OI parses hour from 12-hour clock using the alternative numeric system, e.g. 六 reads as 06 in ja_JP locale tm_hour
    M parses minute as a decimal number (range [00,59]), leading zeroes permitted but not required tm_min
    OM parses minute using the alternative numeric system, e.g. 二十五 parses as 25 in ja_JP locale tm_min
    S parses second as a decimal number (range [00,60]), leading zeroes permitted but not required tm_sec
    OS parses second using the alternative numeric system, e.g. 二十四 parses as 24 in ja_JP locale tm_sec
    Other
    c parses the locale's standard date and time string format, e.g. Sun Oct 17 04:41:13 2010 (locale dependent) all
    Ec parses the locale's alternative date and time string format, e.g. expecting 平成23年 (year Heisei 23) instead of 2011年 (year 2011) in ja_JP locale all
    x parses the locale's standard date representation all
    Ex parses the locale's alternative date representation, e.g. expecting 平成23年 (year Heisei 23) instead of 2011年 (year 2011) in ja_JP locale all
    X parses the locale's standard time representation all
    EX parses the locale's alternative time representation all
    D equivalent to "%m / %d / %y " tm_mon, tm_mday, tm_year
    r parses locale's standard 12-hour clock time (in POSIX, "%I : %M : %S %p") tm_hour, tm_min, tm_sec
    R equivalent to "%H : %M" tm_hour, tm_min
    T equivalent to "%H : %M : %S" tm_hour, tm_min, tm_sec
    p parses the locale's equivalent of a.m. or p.m. tm_hour
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    Valore di ritorno

    Restituisce un oggetto di tipo tale che, se non specificato in è il nome di un flusso di ingresso di tipo std::basic_istream<CharT, Traits>, allora l'espressione in >> get_time(tmb, fmt) comporta come se il codice è stato eseguito il seguente:
    Original:
    Returns an object of unspecified type such that if in is the name of an input stream of type std::basic_istream<CharT, Traits>, then the expression in >> get_time(tmb, fmt) behaves as if the following code was executed:
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    typedef std::istreambuf_iterator<CharT, Traits> Iter; typedef std::time_get<CharT, Iter> TimeGet; std::ios_base::iostate err = std::ios_base::goodbit; const TimeGet& tg = std::use_facet<TimeGet>(in.getloc()); tg.get(Iter(in.rdbuf()), Iter(), in, err, tmb, fmt, fmt + traits::length(fmt)); if (err != std::ios_base::goodbit) in.setstate(err):


    Esempio

    #include <iostream>
#include <sstream>
#include <locale>
#include <iomanip>
#include <ctime>

int main()
{
    std::tm t;
    std::istringstream ss("2011-Februar-18 23:12:34");
    ss.imbue(std::locale("de_DE"));
    ss >> std::get_time(&t, "%Y-%b-%d %H:%M:%S");
    std::cout << std::put_time(&t, "%c") << '\n';
}

    Output: 

    Sun Feb 18 23:12:34 2011

    Vedi anche
    analizza ora / data valori da una sequenza di input di caratteri in struct std::tm
    Original:
    parses time/date values from an input character sequence into struct std::tm
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    (classe template) [modifica]
    (C++11)
    i formati e le uscite di un valore data / ora secondo il formato specificato
    Original:
    formats and outputs a date/time value according to the specified format
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    (funzione di modello) [modifica]