Yes indeed. Any system would be helpful because more difficulties are to come: EU is planning to stop the day-light-saving-time and let the member countries individually select to which time zone the want to stay. Not to mention Brexit were Brittons surely do their own decision.
Anssi -----Alkuperäinen viesti----- Lähettäjä: Programming <[email protected]> Puolesta Raul Miller Lähetetty: Wednesday, 26 December 2018 21.44 Vastaanottaja: Programming forum <[email protected]> Aihe: [Jprogramming] time zones I ran into a situation today, where I need to handle time zones in J. After poking around a bit, I found https://code.jsoftware.com/wiki/User:Ric_Sherlock/Extend_Dates_Project/DatesAdd_Script and http://www.jsoftware.com/pipermail/programming/2014-March/036357.html So, basically, here's my impression of where things are at: (1) time zones are an issue which people need to deal with relatively often. (2) the details are arbitrary, vary from year to year and based on the government in charge of the location in question. So: (3) There's almost always some sort of time zone database included with every modern operating system. Currently, we've got informal partial support for time zones (only for Windows - not for OSX, Linux, etc.). For the unix parts of the world, probably https://man.openbsd.org/gettimeofday.2 or maybe as a fallback: https://www.gnu.org/software/libc/manual/html_node/Time-Zone-Functions.html is the way to go... That's more work than my current project warrants - I'm just going to use a hard coded constant for now, and maybe turn that into a prompted thing later, if necessary. But I might come back to this issue at some point... (and I expect other people will, also -- this is, after all, an issue that people need to deal with relatively often). FYI, -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
