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BDE 4.39.x Production Release
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#include <bdlt_datetime.h>
This class implements a simply-constrained value-semantic type representing the composition of date and time values. Valid date values for the "date" part of a Datetime object are the same as those defined for Date objects; similarly, valid time values for the "time" part of a Datetime object are similar to those defined for Time objects (but with additional precision). Relational operators are disallowed on Datetime objects whose "time" part has the same value as that of a default constructed Time object.
See bdlt_datetime
Static Public Member Functions | |
| static bool | isValid (int year, int month, int day, int hour=0, int minute=0, int second=0, int millisecond=0, int microsecond=0) |
| static int | maxSupportedBdexVersion (int versionSelector) |
| static int | maxSupportedBdexVersion () |
| static int | maxSupportedVersion () |
Friends | |
| DatetimeInterval | operator- (const Datetime &, const Datetime &) |
| bool | operator== (const Datetime &, const Datetime &) |
| bool | operator!= (const Datetime &, const Datetime &) |
| bool | operator< (const Datetime &, const Datetime &) |
| bool | operator<= (const Datetime &, const Datetime &) |
| bool | operator> (const Datetime &, const Datetime &) |
| bool | operator>= (const Datetime &, const Datetime &) |
| template<class HASHALG > | |
| void | hashAppend (HASHALG &hashAlg, const Datetime &) |
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Create a Datetime object whose "date" and "time" parts have their respective default-constructed values, "0001/01/01" and "24:00:00.000000".
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Create a Datetime object whose "date" part has the value of the specified date and whose "time" part has the value "00:00:00.000000".
Create a Datetime object whose "date" and "time" parts have the values of the specified date and time, respectively.
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Create a Datetime object whose "date" part has the value represented by the specified year, month, and day attributes, and whose "time" part has the value represented by the optionally specified hour, minute, second, millisecond, and microsecond attributes. Unspecified trailing optional parameters default to 0.
Datetime value (see isValid).
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Create a Datetime object having the value of the specified original object.
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Destroy this Datetime object.
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Add the specified number of days to the value of this object. Return a reference providing modifiable access to this object.
Datetime object. days may be positive, 0, or negative.
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Add the specified number of days to the value of this object, if the resulting value is in the valid range for a Datetime object. Return 0 on success, and a non-zero value (with no effect) otherwise.
days may be positive, 0, or negative.
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Add the specified number of hours to the value of this object, adjusting the "date" part of the object accordingly. Return a reference providing modifiable access to this object. If 24 == hour() on entry, set the hour attribute to 0 before performing the addition.
Datetime object. hours may be positive, negative, or 0.
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Add the specified number of hours to the value of this object, adjusting the "date" part of the object accordingly, if the resulting value is in the valid range for a Datetime object. If 24 == hour() on entry, set the hour attribute to 0 before performing the addition. Return 0 on success, and a non-zero value (with no effect) otherwise.
hours may be positive, negative, or 0.
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Add the specified number of microseconds to the value of this object, adjusting the "date" part of the object accordingly. Return a reference providing modifiable access to this object. If 24 == hour() on entry, set the hour attribute to 0 before performing the addition.
Datetime object. microseconds may be positive, negative, or 0.
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Add the specified number of microseconds to the value of this object, adjusting the "date" part of the object accordingly, if the resulting value is in the valid range for a Datetime object. If 24 == hour() on entry, set the hour attribute to 0 before performing the addition. Return 0 on success, and a non-zero value (with no effect) otherwise.
microseconds may be positive, negative, or 0.
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Add the specified number of milliseconds to the value of this object, adjusting the "date" part of the object accordingly. Return a reference providing modifiable access to this object. If 24 == hour() on entry, set the hour attribute to 0 before performing the addition.
Datetime object. milliseconds may be positive, negative, or 0.
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Add the specified number of milliseconds to the value of this object, adjusting the "date" part of the object accordingly, if the resulting value is in the valid range for a Datetime object. If 24 == hour() on entry, set the hour attribute to 0 before performing the addition. Return 0 on success, and a non-zero value (with no effect) otherwise.
milliseconds may be positive, negative, or 0.
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Add the specified number of minutes to the value of this object, adjusting the "date" part of the object accordingly. Return a reference providing modifiable access to this object. If 24 == hour() on entry, set the hour attribute to 0 before performing the addition.
Datetime object. minutes may be positive, negative, or 0.
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Add the specified number of minutes to the value of this object, adjusting the "date" part of the object accordingly, if the resulting value is in the valid range for a Datetime object. If 24 == hour() on entry, set the hour attribute to 0 before performing the addition. Return 0 on success, and a non-zero value (with no effect) otherwise.
minutes may be positive, negative, or 0.
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Add the specified number of seconds to the value of this object, adjusting the "date" part of the object accordingly. Return a reference providing modifiable access to this object. If 24 == hour() on entry, set the hour attribute to 0 before performing the addition.
Datetime object. seconds may be positive, negative, or 0.
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Add the specified number of seconds to the value of this object, adjusting the "date" part of the object accordingly, if the resulting value is in the valid range for a Datetime object. If 24 == hour() on entry, set the hour attribute to 0 before performing the addition. Return 0 on success, and a non-zero value (with no effect) otherwise.
seconds may be positive, negative, or 0.
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Add the specified number of hours, and the optionally specified number of minutes, seconds, milliseconds, and microseconds to the value of this object, adjusting the "date" part of this object accordingly. Unspecified trailing optional parameters default to 0. Return a reference providing modifiable access to this object. If 24 == hour() on entry, set the hour attribute to 0 before performing the addition.
Datetime object.
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Add the specified number of hours, and the optionally specified number of minutes, seconds, milliseconds, and microseconds to the value of this object, adjusting the "date" part of this object accordingly, if the resulting value is in the valid range for a Datetime object. Unspecified trailing optional parameters default to 0. If 24 == hour() on entry, set the hour attribute to 0 before performing the addition. Return 0 on success, and a non-zero value (with no effect) otherwise.
| STREAM & bdlt::Datetime::bdexStreamIn | ( | STREAM & | stream, |
| int | version | ||
| ) |
Assign to this object the value read from the specified input stream using the specified version format, and return a reference to stream. If stream is initially invalid, this operation has no effect. If version is not supported, this object is unaltered and stream is invalidated, but otherwise unmodified. If version is supported but stream becomes invalid during this operation, this object has an undefined, but valid, state.
stream. See the bslx package-level documentation for more information on BDEX streaming of value-semantic types and containers. | STREAM & bdlt::Datetime::bdexStreamOut | ( | STREAM & | stream, |
| int | version | ||
| ) | const |
Write the value of this object, using the specified version format, to the specified output stream, and return a reference to stream. If stream is initially invalid, this operation has no effect. If version is not supported, stream is invalidated, but otherwise unmodified.
version is not written to stream. See the bslx package-level documentation for more information on BDEX streaming of value-semantic types and containers.
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Return the value of the "date" part of this object.
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Return the value of the day (of the month) attribute of this object.
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Return the value of the dayOfWeek attribute associated with the day (of the month) attribute of this object.
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Return the value of the dayOfYear attribute of this object.
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Load, into the specified hour, and the optionally specified minute, second, millisecond, and microsecond the respective hour, minute, second, millisecond, and microsecond attribute values from this time object. Unspecified arguments default to 0. Supplying 0 for an address argument suppresses the loading of the value for the corresponding attribute, but has no effect on the loading of other attribute values.
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Return the value of the hour attribute of this object.
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Return true if the specified year, month, and day attribute values, and the optionally specified hour, minute, second, millisecond, and microsecond attribute values, represent a valid Datetime value, and false otherwise. Unspecified trailing optional parameters default to 0. year, month, day, hour, minute, second, millisecond, and microsecond attribute values represent a valid Datetime value if true == Date::isValidYearMonthDay(year, month, day), 0 <= hour < 24, 0 <= minute < 60, 0 <= second < 60, 0 <= millisecond < 1000, and 0 <= microsecond < 1000. Additionally, a valid year, month, day with the time portion equal to 24:00:00.000000 also represents a valid Datetime value.
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Return the most current BDEX streaming version number supported by this class.
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Return the maximum valid BDEX format version, as indicated by the specified versionSelector, to be passed to the bdexStreamOut method.
versionSelector be formatted as "YYYYMMDD", a date representation. Also note that versionSelector should be a compile-time-chosen value that selects a format version supported by both externalizer and unexternalizer. See the bslx package-level documentation for more information on BDEX streaming of value-semantic types and containers.
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Return the most current BDEX streaming version number supported by this class.
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Return the value of the microsecond attribute of this object.
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Return the value of the millisecond attribute of this object.
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Return the value of the minute attribute of this object.
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Return the value of the month attribute of this object.
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Add to this object the value of the specified rhs object, and return a reference providing modifiable access to this object. If 24 == hour() on entry, set the hour attribute of this object to 0 before performing the addition.
Datetime (see isValid).
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Add to this object the value of the specified rhs object, and return a reference providing modifiable access to this object. If 24 == hour() on entry, set the hour attribute of this object to 0 before performing the addition.
Datetime (see isValid).
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Subtract from this object the value of the specified rhs object, and return a reference providing modifiable access to this object. If 24 == hour() on entry, set the hour attribute of this object to 0 before performing the subtraction.
Datetime (see isValid).
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Subtract from this object the value of the specified rhs object, and return a reference providing modifiable access to this object. If 24 == hour() on entry, set the hour attribute of this object to 0 before performing the subtraction.
Datetime (see isValid). Assign to this object the value of the specified rhs object, and return a reference providing modifiable access to this object.
| bsl::ostream & bdlt::Datetime::print | ( | bsl::ostream & | stream, |
| int | level = 0, |
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| int | spacesPerLevel = 4 |
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| ) | const |
Write the value of this object to the specified output stream in a human-readable format, and return a reference to stream. Optionally specify an initial indentation level, whose absolute value is incremented recursively for nested objects. If level is specified, optionally specify spacesPerLevel, whose absolute value indicates the number of spaces per indentation level for this and all of its nested objects. If level is negative, suppress indentation of the first line. If spacesPerLevel is negative, format the entire output on one line, suppressing all but the initial indentation (as governed by level). If stream is not valid on entry, this operation has no effect.
| int bdlt::Datetime::printToBuffer | ( | char * | result, |
| int | numBytes, | ||
| int | fractionalSecondPrecision = 6 |
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| ) | const |
Efficiently write to the specified result buffer no more than the specified numBytes of a representation of the value of this object. Optionally specify fractionalSecondPrecision digits to indicate how many fractional second digits to output. If fractionalSecondPrecision is not specified then 6 fractional second digits will be output (3 digits for milliseconds and 3 digits for microseconds). Return the number of characters (not including the null character) that would have been written if the limit due to numBytes were not imposed. result is null-terminated unless numBytes is 0.
0 <= numBytes, 0 <= fractionalSecondPrecision <= 6, and result refers to at least numBytes contiguous bytes. numBytes if the output representation was truncated to avoid result overrun.
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Return the value of the second attribute of this object.
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Set the "date" part of this object to have the value of the specified date.
Set the value of this object to a Datetime whose "date" part has the value represented by the specified date, and whose "time" part has the value represented by the specified time.
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Set the value of this object to a Datetime whose "date" part has the value represented by the specified date, and whose "time" part has the value represented by the optionally specified hour, minute, second, millisecond, and microsecond attributes. Unspecified trailing optional parameters default to 0.
Datetime value (see isValid).
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Set the value of this object to a Datetime whose "date" part has the value represented by the specified year, month, and day attributes, and whose "time" part has the value represented by the optionally specified hour, minute, second, millisecond, and microsecond attributes. Unspecified trailing optional parameters default to 0.
Datetime value (see isValid).
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Set the value of this object to a Datetime whose "date" part has the value represented by the specified date, and whose "time" part has the value represented by the optionally specified hour, minute, second, millisecond, and microsecond attributes, if the attribute values (collectively) represent a valid Datetime value (see isValid). Unspecified trailing optional parameters default to 0. Return 0 on success, and a non-zero value (with no effect) otherwise.
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Set the "date" part of this object to have the value represented by the specified year, month, and day attributes, and set the "time" part to have the value represented by the optionally specified hour, minute, second, millisecond, and microsecond attributes, if the eight attribute values (collectively) represent a valid Datetime value (see isValid). Unspecified trailing optional parameters default to 0. Return 0 on success, and a non-zero value (with no effect) otherwise.
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Set the "hour" attribute of this object to the specified hour value. If 24 == hour, set the minute, second, millisecond, and microsecond attributes to 0.
0 <= hour <= 24.
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Set the "hour" attribute of this object to the specified hour value if 0 <= hour <= 24. If 24 == hour, set the minute, second, millisecond, and microsecond attributes to 0. Return 0 on success, and a non-zero value (with no effect) otherwise.
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Set the "microsecond" attribute of this object to the specified microsecond value. If 24 == hour(), set the hour attribute to 0.
0 <= microsecond <= 999.
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Set the "microsecond" attribute of this object to the specified microsecond value if 0 <= microsecond <= 999. If 24 == hour(), set the hour attribute to 0. Return 0 on success, and a non-zero value (with no effect) otherwise.
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Set the "millisecond" attribute of this object to the specified millisecond value. If 24 == hour(), set the hour attribute to 0.
0 <= millisecond <= 999.
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Set the "millisecond" attribute of this object to the specified millisecond value if 0 <= millisecond <= 999. If 24 == hour(), set the hour attribute to 0. Return 0 on success, and a non-zero value (with no effect) otherwise.
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Set the "minute" attribute of this object to the specified minute value. If 24 == hour(), set the hour attribute to 0.
0 <= minute <= 59.
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Set the "minute" attribute of this object to the specified minute value if 0 <= minute <= 59. If 24 == hour(), set the hour attribute to 0. Return 0 on success, and a non-zero value (with no effect) otherwise.
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Set the "second" attribute of this object to the specified second value. If 24 == hour(), set the hour attribute to 0.
0 <= second <= 59.
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Set the "second" attribute of this object to the specified second value if 0 <= second <= 59. If 24 == hour(), set the hour attribute to 0. Return 0 on success, and a non-zero value (with no effect) otherwise.
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Set the "time" part of this object to have the value of the specified time.
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Set the "time" part of this object to have the value represented by the specified hour attribute value and the optionally specified minute, second, millisecond, and microsecond attribute values. Unspecified trailing optional parameters default to 0.
hour, minute, second, millisecond, and microsecond represent a valid "time" portion of a Datetime value.
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Set the "time" part of this object to have the value represented by the specified hour attribute value and the optionally specified minute, second, millisecond, and microsecond attribute values if they comprise a valid "time" portion of a DateTime value. Unspecified trailing optional parameters default to 0. Return 0 on success, and a non-zero value (with no effect) otherwise.
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Set the "date" part of this object to have the value represented by the specified year and dayOfYear attribute values.
year and dayOfYear represent a valid Date value (i.e., true == Date::isValidYearDay(year, dayOfYear)).
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Set this object to have the value represented by the specified year and dayOfYear if they comprise a valid Date value (see Date::isValidYearDay). Return 0 on success, and a non-zero value (with no effect) otherwise.
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Set the "date" part of this object to have the value represented by the specified year, month, and day attribute values.
year, month, and day represent a valid Date value (i.e., true == Date::isValidYearMonthDay(year, month, day)).
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Set this object to have the value represented by the specified year, month, and day if they comprise a valid Date value (see Date::isValidYearMonthDay). Return 0 on success, and a non-zero value (with no effect) otherwise.
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Format this datetime to the specified output stream and return a reference to the modifiable stream.
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Return the value of the "time" part of this object.
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Set the "date" part of this object's value to the specified year, month, and day, and the "time" part to the optionally specified hour, minute, second, and millisecond, if they represent a valid Datetime value, with trailing fields that are not specified set to 0. Return 0 on success, and a non-zero value (with no effect) otherwise.
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Return the value of the year attribute of this object.
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Return a DatetimeInterval object having a value that is the difference between the specified lhs (Datetime) and the specified rhs (Datetime). If the hour attribute of either operand is 24, the result is the same as if that hour attribute is 0.
DatetimeInterval object. Return true if the value of the specified lhs object is less than the value of the specified rhs object, and false otherwise. A Datetime object a is less than a Datetime object b if a.date() < b.date(), or if a.date() == b.date() and the time portion of a is less than the time portion of b.
24 != lhs.hour() && 24 != rhs.hour(). Return true if the value of the specified lhs object is less than or equal to the value of the specified rhs object, and false otherwise.
24 != lhs.hour() && 24 != rhs.hour(). Return true if the specified lhs and rhs objects have the same value, and false otherwise. Two Datetime objects have the same value if they have the same values for their "date" and "time" parts, respectively.
Return true if the value of the specified lhs object is greater than the value of the specified rhs object, and false otherwise. A Datetime object a is greater than a Datetime object b if a.date() > b.date(), or if a.date() == b.date() and the time portion of a is greater than the time portion of b.
24 != lhs.hour() && 24 != rhs.hour(). Return true if the value of the specified lhs object is greater than or equal to the value of the specified rhs object, and false otherwise.
24 != lhs.hour() && 24 != rhs.hour().