From: "byroot (Jean Boussier) via ruby-core" Date: 2022-12-23T09:52:13+00:00 Subject: [ruby-core:111396] [Ruby master Bug#19253] `Time` objects can't be efficiently and precisely serialized without Marshal Issue #19253 has been updated by byroot (Jean Boussier). Status changed from Open to Closed Ok, I suppose the `#zone` isn't that important. Thank you @mame. ---------------------------------------- Bug #19253: `Time` objects can't be efficiently and precisely serialized without Marshal https://bugs.ruby-lang.org/issues/19253#change-100770 * Author: byroot (Jean Boussier) * Status: Closed * Priority: Normal * Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN ---------------------------------------- ### Context In our application we try to avoid to use `Marshal` for serializing cache payloads because we want to be strict on what types we allow to be cached. ([Full context in this post](https://shopify.engineering/caching-without-marshal-part-one)). As such we need to be able to break `Time` objects into a list of primitive types supported by our serialization format (msgpack). ### Problem Maybe I'm missing something, but I as far as I can tell `Time` instance can't be recreated in the exact same state. ```ruby >> t = Time.now => 2022-12-23 09:44:05.693688 +0100 >> Time.at(t.sec, t.nsec, :nanosecond) => 1970-01-01 01:00:05.693688 +0100 >> t == Time.at(t.sec, t.nsec, :nanosecond) => false >> t == Time.at(t.sec, t.subsec) => false ``` Additionally, `Time` objects created with `Time.now` have a `String` as `Time#zone`, and as far as I can tell that can't be reproduced either: ```ruby >> t = Time.now => 2022-12-23 09:46:22.452771 +0100 >> t.zone => "CET" >> Time.at(t.sec, t.subsec, in: t.utc_offset).zone => nil >> Time.at(t.sec, t.subsec, in: t.zone) :274:in `at': "+HH:MM", "-HH:MM", "UTC" or "A".."I","K".."Z" expected for utc_offset: CET (ArgumentError) >> Time.at(t.sec, t.subsec, in: TZInfo::Timezone.get(t.zone)).zone => # ``` -- https://bugs.ruby-lang.org/ ______________________________________________ ruby-core mailing list -- ruby-core@ml.ruby-lang.org To unsubscribe send an email to ruby-core-leave@ml.ruby-lang.org ruby-core info -- https://ml.ruby-lang.org/mailman3/postorius/lists/ruby-core.ml.ruby-lang.org/