e009: Composing a Rustic tune

from New Rustacean · host Chris Krycho

Notes Last time, we looked at generics and traits at a high level. This time, we dig deeper on traits, looking specifically at std::iter::Iterator as an example of a powerful trait that can be composed across types, and then at how we might compose multiple traits on a single type. We also talk about the syntax for traits, the use of marker traits, some of the things you can’t presently do with traits, and even just a smidge about the future of traits in Rust. All that in less than 20 minutes! You’ll find today’s source example fairly interesting, I think: it’s just one type, but it uses almost every concept discussed on the show today! Links Nick Cameron: “Thoughts on Rust in 2016” “Upcoming breakage starting in Rust 1.7, from RFCs 1214 and 136” RFC 1214: Clarify (and improve) rules for projections and well-formedness RFC 136: Ban private items in public APIs The Rust Book: Traits Trait objects (dynamic dispatch) The Rust reference: std::iter and std::iter::Iterator Add Drop PartialEq and Eq PartialOrd and Ord Special traits Trait objects RFC: impl specialization Aaron Turon: “Specialize to reuse” Sponsors Aleksey Pirogov Chris Palmer Derek Morr Hamza Sheikh Luca Schmid Micael Bergeron Ralph Giles (“rillian”) reddraggone9 William Roe Become a sponsor Patreon Venmo Dwolla Cash.me Follow New Rustacean: Twitter: @newrustacean App.net: @newrustacean Email: [email protected] Chris Krycho Twitter: @chriskrycho App.net: @chriskrycho

Episode metadata supplied by the publisher feed · Published Jan 9, 2016

What this episode covers

Notes Last time, we looked at generics and traits at a high level. This time, we dig deeper on traits, looking specifically at std::iter::Iterator as an example of a powerful trait that can be composed across types, and then at how we might compose multiple traits on a single type. We also talk about the syntax for traits, the use of marker traits, some of the things you _can’t_ presently do with traits, and even just a smidge about the _future_ of traits in Rust. All that in less than 20 minutes! You’ll find today’s source example fairly interesting, I think: it’s just one type, but it uses almost every concept discussed on the show today! Links - Nick Cameron: “Thoughts on Rust in 2016” - “Upcoming breakage starting in Rust 1.7, from RFCs 1214 and 136” - RFC 1214: Clarify (and improve) rules for projections and well-formedness - RFC 136: Ban private items in public APIs - The Rust Book: - Traits - Trait objects (dynamic dispatch) - The Rust reference: - std::iter and std::iter::Iterator - Add - Drop - PartialEq and Eq - PartialOrd and Ord - Special traits - Trait objects - RFC: impl specialization - Aaron Turon: “Specialize to reuse” Sponsors - Aleksey Pirogov - Chris Palmer - Derek Morr - Hamza Sheikh - Luca Schmid - Micael Bergeron - Ralph Giles (“rillian”) - reddraggone9 - William Roe Become a sponsor - Patreon.com/newrustacean - Venmo.com/chriskrycho - Dwolla.com/hub/chriskrycho - Cash.me/$chriskrycho Follow - New Rustacean: - Twitter: @newrustacean - App.net: @newrustacean - Email: [email protected] - Chris Krycho - Twitter: @chriskrycho - App.net: @chriskrycho

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