Usually we have to choose between performance, safety, and development speed. We have C/C++, Java, and bunch of scripting languages. Then here comes to the Rust: a programming language brought by Mozilla and the community. This topic will introduce Rust by showing the ownership concept, modern syntax and examples of concurrency approach.

1. Let's Rust!
System programming is
great again!
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2. Who am I ?
Karl Lam
99% Vegan, Combat skills, Chinese
Calligraphy
https://github.com/karlvlam/hkosc2017-demo
DevOps@OneSky (We are hiring!)
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3. History
1970s-80s: C, C++
1990s: Java, Javascript, Ruby, PHP,
Python...
2000s: Scala, Go, Rust
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4. Why Rust ?
❖ Memory Safety (Ownership)
❖ Modern syntax (Match, Trait...)
❖ Package management (Cargo & crates)
❖ Bare Metal (no GC, self-contained)
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5. Memory Safety
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6. ➢Ownership
➢Borrowing
➢Lifetime
Memory Safety
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7. ➢Avoid dangling pointer (use after free)
➢Check at compile time (less human
mistake)
➢No GC (effective)
Ownership
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8. Ownership
➢Copy vs owned
➢Move vs borrow
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9. Borrowing rules
➢Many immutable borrows
➢One mutable borrow, no other
(im)mutable borrows
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10. Pattern Matching
➢Include all cases
➢expression
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11. Concurrency - Threads
➢Channel (data exchange)
➢Mutex (shared state)
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12. Concurrency - Async I/O
➢External libraries (mio, tokio...)
➢Some support for standard library
➢Future is the future
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13. Reference
❖ The Rust Programming Language
https://doc.rust-lang.org/book/
❖ Tokio https://tokio.rs/
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