I’m not sure if this would be bubble up to the interface level that we are discussing here–but how would that work in multi-node setups?
christhekeele
michalmuskala
That’s why we don’t want to implement it in stdlib we want to define how a provider of time zone info should look like, so third party libraries can provide it, while the stdlib can offer functions that use it (and would error if no provider is specified). So you could have a nerves-specific provider that does something special.
Similar here. The stdlib doesn’t care how the provider gets the info - it might sync it in the cluster, sync it with some external resources (like current tzdata does) or compile it into modules (like old tzdata does) or do something I cant even think of right now.
As stated in the original post, this is not the thing we should be discussing here. How the provider will obtain the time zone database is beyond the scope of this discussion. We want only to explore what functions would require the time zone information and what would be the best interface for a library to expose it to stdlib.
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Lau
I have made a proposal that includes a behaviour and Elixir code that uses it, so that DateTime functions can be used to get the time in any time one and convert between timezones: Time zone behaviour and functionality (RFC/WIP) by lau · Pull Request #7914 · elixir-lang/elixir · GitHub
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thojanssens1
Hello, is anyone working on this? Is there currently a proposal?
I want to drop some links here.
EcmaScript TC39’s new date and time API proposal is in stage 2 currently:
https://github.com/tc39/proposal-temporal
https://tc39.es/proposal-temporal/spec-rendered
JSR-310, Java’s date and time API:
JS implementation of JSR-310 :
https://github.com/js-joda/js-joda
A more functional library for JS:
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LostKobrakai
Here’s the behaviour: Calendar.TimeZoneDatabase — Elixir v1.20.2
And this is the module elixir ships with: Calendar.UTCOnlyTimeZoneDatabase — Elixir v1.20.2
tzdata does also ship an implementation of the behaviour, which does use the IANA timezone database.
This was released in elixir 1.8
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