3party/date: A date and time library based on the C++11/14/17 <chrono> header - date

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Tomasz Kamiński 5a9b44a37a Implemented test for casting non-wall clocks and detecting that clocks cannot be casted.

Added test that detects if clock_cast<Dest>(Source) properly
SFINAEs if clock's are not castable, this includes test for
steady_clock that is not castable to any wall-clock.

Secondly added steady_based_clock based on steady_clock
(as name indicates), that clock_cast may be extended to clock
non-related to wall-time (sys/utc) using conversion traits.

Final example is pair of ambiguous clocks (amb1/amb2_clock) that can convert
to each other either using sys_clock or utc_clock.
Then the conversion from amb2 to amb1 is disambiguated
via trait specialization.

2017-11-24 18:08:00 +01:00

include/date

Implemented clock_cast function.

2017-11-24 17:55:15 +01:00

src

Update to accomidate change of iana url #241

2017-11-23 20:25:00 -05:00

test

Implemented test for casting non-wall clocks and detecting that clocks cannot be casted.

2017-11-24 18:08:00 +01:00

LICENSE.txt

Add License file

2017-01-26 19:42:42 -05:00

README.md

Update C++ standards proposal status

2017-11-12 06:27:50 -05:00

README.md

Try it out on wandbox!

This is actually several separate C++11/C++14 libraries:

"date.h" is a header-only library which builds upon <chrono>. It adds some new duration types, and new time_point types. It also adds "field" types such as year_month_day which is a struct {year, month, day}. And it provides convenient means to convert between the "field" types and the time_point types.
- Documentation: http://howardhinnant.github.io/date/date.html
- Video: https://www.youtube.com/watch?v=tzyGjOm8AKo
- Slides: http://schd.ws/hosted_files/cppcon2015/43/hinnant_dates.pdf
"tz.h" / "tz.cpp" are a timezone library built on top of the "date.h" library. This timezone library is a complete parser of the IANA timezone database. It provides for an easy way to access all of the data in this database, using the types from "date.h" and <chrono>. The IANA database also includes data on leap seconds, and this library provides utilities to compute with that information as well.
"iso_week.h" is a header-only library built on top of the "date.h" library which implements the ISO week date calendar.
- Documentation: http://howardhinnant.github.io/date/iso_week.html
"julian.h" is a header-only library built on top of the "date.h" library which implements a proleptic Julian calendar which is fully interoperable with everything above.
- Documentation: http://howardhinnant.github.io/date/julian.html
"islamic.h" is a header-only library built on top of the "date.h" library which implements a proleptic Islamic calendar which is fully interoperable with everything above.
- Documentation: http://howardhinnant.github.io/date/islamic.html

"date.h" and "tz.h" are now being proposed for standardization:

Current proposal: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0355r4.html
Draft revision: http://howardhinnant.github.io/date/d0355r5.html
Status: The proposal was approved by LEWG and forwarded to LWG with the recommendation of targeting C++20 at the Albuquerque, NM meeting in Nov. 2017.

List of projects using this library:

www.safe.com
www.webtoolkit.eu/wt

If you would like your project (or product) on this list, just let me know.

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