tags:: #output/lecture on/programming
up:: Tunch
Timestamp - Tunch

Brainstorm

The Hero's Journey

• Finding some weird things in how times are shown

• Call: tickets with wrong dates

• Realization: Your day depends on your hour (and month and year etc)

• Weird shit from Timezones - road of trials

• Deepest challenge: ceci n'est pas une timestamp?

• Offset calculations are wrong, use zones (DST)

• Java LocalDate calculations: show how they might be wrong (DST, local vs utc)

• Reborn: I understand it's hard. I understand there are APIs for it and I should use the one that most closely resembles the semantics of what I want to do. KISS, don't reinvent the wheel because you'll be wrong.

• A language is not enough

• Locales

  • JavaScript: Angular locales
  • JavaScript: Intl object
  • Java: Date, LocalDate, Instant, OffsetDateTime, ZonedDateTime
    Timezones
    Internationalization

• The Ordinary World

  • Happily coding
  • Adding up nanoseconds
  • Something feels odd

• The Call to Adventure

  • Saving a date and it ends up changing

• Refusal of the Call

  • No I don't care about the time
  • But then I do need to save time and it changes
  • Fake Meeting with the Mentor: Tom Scott's Warning

• Meeting with the Mentor

  • Meme: before / after understanding timezones
  • Yoda is our Mentor

• Crossing the First Threshold

  • Okay let's do this shit
  • EVERYTHING UTC
  • Shit it's still wrong

• Tests, Allies and Enemies

  • Examples of weird stuff Timezones

• Approach to the Innermost Cave

  • Ceci n'est pas une Timestamp: why?

• The Ordeal

  • How do we fix this? It looks like all is lost.
  • Yoda: Use the built-in classes, Luke.

• Actual explanation

• The Road Back: JavaScript

• Return with the Elixir