Porque Rust?

Transcript

1. • Fabio Utzig • @fabioutzig • github.com/utzig • utzig@linux.com Saturday, 19 November 16
2. • Apache Mynewt - https://mynewt.incubator.apache.org/ • Apache Mynewt Overview - https://www.youtube.com/ watch?v=4xRbGMDcMu8 Saturday, 19 November 16
3. • https://www.toptal.com/ Saturday, 19 November 16
4. Microsoft Access • Escrevendo meu primeiro script VBA! Saturday, 19 November 16
5. Saturday, 19 November 16
6. Rust is a systems programming language that runs blazingly fast, prevents segfaults, and guarantees thread safety. Saturday, 19 November 16
7. ▪ zero-cost abstractions ▪ move semantics ▪ guaranteed memory safety ▪ threads without data races ▪ trait-based generics ▪ pattern matching ▪ type inference ▪ minimal runtime ▪ efficient C bindings Saturday, 19 November 16
8. Público alvo • Caso 1: Passei muitos anos de minha vida escrevendo bugs (não-intencionais) em C++, já deu! • Caso 2: Python/Ruby são super-legais mas podia ser um pouco mais rápido né (tipo 50x?) Saturday, 19 November 16
9. Público alvo Fonte: https://people-mozilla.org/~acrichton/rust-talk-2014-12-10/ Saturday, 19 November 16
10. Onde eu baixo? • Provavelmente já tem na sua distribuição Linux! • Tem no Mac com Homebrew, ports/ packages no OpenBSD e FreeBSD (NetBSD/DragonflyBSD tem?) • rustup (https://github.com/rust-lang- nursery/rustup.rs) ou multirust! Saturday, 19 November 16
11. Cargo • Gerenciador estilo npm (Node.js) / pip (Python), gem/bundler (Ruby) • Criar projetos, gerenciar dependências, compilar, rodar, empacotar, upload • https://crates.io/ -The Rust community’s crate host Saturday, 19 November 16
12. Tipos primitivos • bool (true/false) • char (unicode) • i8 a i64 (com sinal) e u8 a u64 (sem sinal) • f32 e f64 (floats) • isize / usize - dependentes da arquitetura Saturday, 19 November 16
13. Tipos primitivos • Arrays (tamanho fixo) : let a = [0,1,2,3,4]; • Slices (são views): let m: &a[1..4]; • str: string primitiva • Tuplas: let x: (1, 2, 3); Saturday, 19 November 16
14. Estruturas de controle • loop (while infinito!) • while • for • if / else • match (vc leva um switch e muito mais!) Saturday, 19 November 16
15. Demo Time! Saturday, 19 November 16
16. Collections • Vec, VecDeque, LinkedList • HashMap, BTreeMap • HashSet, BTreeSet • BinaryHeap Saturday, 19 November 16
17. &str vs String • &str: strings literais, tipo char * (C/C++), tamanho fixo • String: dinâmico alocado no heap, tipo classes “String” em outras linguagens Saturday, 19 November 16
18. “Orientação a objeto” • A terminologia objeto/classe não é comum em rust. • O normal é dizer “implementar métodos em valores” Saturday, 19 November 16
19. Structs / Impl • Tem 3 tipos sendo 2 mais comuns: struct e struct tuple • Impl para adicionar métodos a um valor Saturday, 19 November 16
20. Structs / Impl Saturday, 19 November 16
21. Traits Saturday, 19 November 16
22. Enum / match Saturday, 19 November 16
23. Ownership / Borrowing •Demo Saturday, 19 November 16
24. Testes Saturday, 19 November 16
25. Concorrência Saturday, 19 November 16
26. Unsafe / FFI Fonte: https://github.com/alexcrichton/rust-ffi-examples/tree/master/rust-to-c Saturday, 19 November 16
27. Valeu! - Perguntas? • https://www.rust-lang.org/ • https://crates.io • https://doc.rust-lang.org/stable/book/ • https://users.rust-lang.org/ • Alex Crichton (https://github.com/alexcrichton), Niko Matsakis (https://github.com/nikomatsakis), Steve Klabnik (https://github.com/steveklabnik) • Embarcados? => Jorge Aparicio (https:// github.com/japaric/) Saturday, 19 November 16
28. Extras • Generics • Option<T> / Result<T> • Rc<T> / Arc<T> • Lifetimes • pub • closures Saturday, 19 November 16