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View the dependency graph for this libraryYstok-Local-Time
Created by divanov on: Thu, 25 Jun 2009 10:19:29 GMT, Last modification: Fri, 26 Jun 2009 10:07:38 GMT
Common Lisp library for representing and handling time zones, dates, and timestamps. This package partially supports ISO 8601 format and provides localized read and print of date and time.
| Web site | http://lisp.ystok.ru/ylocal-time/ |
| Mailing list | |
| Version | 1.1.010 - |
| Maturity | Obsolete |
| OS compatibility | Window, *nix |
| ASDF installable | Yes |
| Official Download | http://lisp.ystok.ru/ylocal-time/ylocal-time-1-1-010.zip |
| Mirrored Download | |
| Source code repository |
The idea was originally based on the LOCAL-TIME concept proposed by Erik Naggum (1965-2009) in "The Long, Painful History of Time" in 1999.
The implementation was also inspired by the Local-Time package by onShore, Inc. available from http://alpha.onshore-devel.com/lisp-software/ (seems not available any longer).
But Erik had criticized their open source implementation heavily. For example, bignum-based operations were defeating the original efficiency purpose of the LOCAL-TIME.
Taking the critique into account and after realizing drawbacks, the fundamentals were redesigned in Ystok-Local-Time and code was rewritten considerably.
The main feature is the following date/time type triplet:
datecorresponds to the DATE data type in SQL (ISO/IEC 9075:1999,2003).local-timecorresponds to TIMESTAMP WITHOUT TIME ZONE.utc-timecorresponds to SQL TIMESTAMP WITH TIME ZONE and contains an explicit timezone offset.
Prerequisites and options
The library requires Ystok-Library.
The library was developed and tested on LispWorks 4.2-4.4, 5.0 for Windows.
The author has not tried to run the code on any *nix himself, though unix-specific code
from onShore is preserved "as is", see unix.lisp.
Compatible Implementations
Authors and Maintainers
Organizations
Tags
ISO 8601 | LLGPL | Time | Libraries | Open Source
See Also
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