PLAY PODCASTS
e003: No. more. nulls.

e003: No. more. nulls.

Enumerated (`enum`) types, pattern matching, and meaningful return values.

New Rustacean

October 21, 201516m 51s

Audio is streamed directly from the publisher (podtrac.com) as published in their RSS feed. Play Podcasts does not host this file. Rights-holders can request removal through the copyright & takedown page.

Original episode page

Show Notes

No More Nulls

Subject: Enumerated (enum) types, pattern matching, and meaningful return types.

Notes

Today’s episode discusses, in order:

  • Enumerated types, with an eye to the difference between structs and enums, and to the differences between enums in C and in Rust.
  • Pattern matching, with a focus on using them with enumerated types and some discussion about how they differ from switch blocks in C-like languages.
  • Using the Option and Result enumerated types with pattern matching to provide meaningful returns from functions safely.

Order

There is a specific order to the examples below, and it is not the automatically-alphabetized order rendered by rustdoc. Instead, you should work through in the sequence they appear in the source:

  1. RelatedishThings
  2. demonstrate_basic_enumeration
  3. demonstrate_match
  4. get_an_option
  5. demonstrate_option
  6. get_a_result
  7. demonstrate_result

Follow/Support

  • New Rustacean:
    • Twitter: @newrustacean
    • App.net: @newrustacean
    • Patreon
    • Email:
  • Chris Krycho
← All episodes of New Rustacean