[tz] OpenJDK/CLDR/ICU/Joda issues with Ireland change

Steve Summit scs at eskimo.com
Sat Jan 27 02:24:46 UTC 2018

Brian Inglis wrote:
> On 2018-01-26 06:54, Steve Summit wrote:
> > Do we know how many programs are using timezone and tm_isdst
> > (and the variable that says "this zone observes DST sometimes",
> > and the other difficult API bits we've been discussing here)?
> Github search result counts for some indications:
> [details omitted]

Interesting.  Thanks.

> > Do we know why they think they have to use them?  Is there
> > guidance we can give them to help wean them off them?
> Provide internationalized date and time interfaces that don't require changing
> and reading struct tm fields to do complex date arithmetic...
> Internationalize tzdb so it can deal with other calendars...
> Provide interfaces to handle different time scales easily...
> support time stamps down to at least the attosecond...

All worthy goals, but I was more simply asking: For those
programs still using tm_isdst (and similar/related interfaces):
what are they using them for, and what can we offer them instead?

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