The class boost::posix_time::ptime is the primary interface for time point manipulation. In general, the ptime class is immutable once constructed although it does allow assignment. Class ptime is dependent on gregorian::date for the interface to the date portion of a time point. Other techniques for creating times include time iterators .
DetailsIntroduction-- Header-- Construction-- Construct from String-- Construct from Clock-- Construct using Conversion functions-- Accessors-- Conversion To String-- Operators-- Struct tm, time_t, and FILETIME Functions Introduction. The class boost::posix_time::ptime is the primary interface for time point manipulation. In general, …
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DetailsLocal_time uses a time zone object to account for differences in time zones and daylight savings adjustments. For example: While 5:00 pm, October 10, 2004 in Sydney Australia occurs at exactly the same instant as 3:00 am, October 10, 2004 in New York USA, it is a 14 hour difference in wall-clock times.
DetailsA clock providing microsecond level resolution /*! A high precision clock that measures the local time * at a resolution up to microseconds and adjusts to the * resolution of the time system. For example, for the * a library configuration with nano second resolution, * the last 3 places of the fractional seconds will always * be 000 since there ...
DetailsThe interface that the user will see in everyday use is nearly identical to that of Boost.DateTime time duration s authored by Jeff Garland, both in syntax and in behavior. This has been a very popular boost library for 7 years. There is an enormous positive history with this interface.
DetailsDescription. Facet used for format-based output of time types This class provides for the use of format strings to output times. In addition to the flags for formatting date elements, the following are the allowed format flags: x X => default format - enables addition of more flags to default (ie. "%x %X %z") f => fractional seconds ".123456".
DetailsNote that the results of this method vary based on the resolution of template instantiation for the time duration (Normally either a nano-second or millisecond count). time_duration td (1,2,3, 1000); td.fractional_seconds () --> 1000. bool is_negative () …
DetailsUTC (Coordinated Universal Time) is a widely used civil time system. UTC is adjusted for earth rotation at longitude 0 by the use of leap seconds (This is not predictable, only as necessary). Most local time systems are based on UTC but are also adjusted for earth rotation so that daylight hours are similar everywhere.
DetailsTime-Builtin: 193ms, Time-Numpy: 22.8ms (Created By Author) Numpy can bring incredible performance boosts to math in Python, however, you have to be very careful to stick with Numpy data structures and methods to achieve this level of optimization. Simply creating the array incorrectly in this situation negates the performance boost:
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DetailsIntroduction. The class boost::posix_time::ptime is the primary interface for time point manipulation. In general, the ptime class is immutable once constructed although it does allow assignment. Class ptime is dependent on gregorian::date for the interface to the date portion of a time point.
DetailsChapter 9. Boost.Date_Time - 1.61.0. ...one of the most highly regarded and expertly designed C++ library projects in the world.—. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards. This is the documentation for an old version of Boost. Click here to view this page for the latest version. Chapter 9. Boost.Date_Time.
DetailsDate Time IO System. Exception Handling on Streams. As of version 1.33, the date_time library utilizes a new IO streaming system. This new system gives the user great control over how dates and times can be represented. The customization options can be broken down into two groups: format flags and string elements.
DetailsClass path does not currently map invalid characters in filenames to valid characters. In the future we might add something like this: When converting filenames to the native operating system format, implementations are encouraged, but not required, to convert otherwise invalid characters or character sequences to valid characters or character sequences.
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