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I belive in Rust
An intruduction to the Rust programming language
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2. Disclaimer
• I am an Rust newbie
• Rust is in 0.31 and have probably changed
since I wrote these slides. Example code
might not compile with the latest and
greatest.
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3. So what is Rust
• A programming language from Mozilla labs
• Compiled un-managed language
• Ahead of time compiler
• Concurrent-oriented
– Message passing
– Default immutable variables (mutable keyword)
• Lambda expressions with a lot if easy to use code
• Classes and traits
• No NPE crashes, libs use Option<T> or Result<T,U>
• Unsigned types (Singed byte is a bad idea)
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4. Preparing for hello world
• Git clone and build from source
– Dependencies
• G++ 4.4 or above or clang++3.x
• Python 2.6 or later
• Gnu make 3.8.1 or later
• curl
• Download binaries
• Emacs and Eclipse plugins
• http://dl.rust-lang.org/doc/tutorial.html
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5. Simple hello world
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6. Tasks
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7. Task management
• An Rust program consists of a tree of tasks,
with their own stack and sole ownership of
allocated heap data
• Communicate through ports and channels
• Propagates failures to its parent (the task
spawned this one) unless unsupervise
function is called.
• May be executed in parallel and are
scheduled by the runtime
• Has its own GC
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8. Proper hello world
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9. Rust vs Java
• Java has global GC Rust has per-task GC
• Rust does not share memory but
communicate through message passing
• Rust is compiled to native AOT compiler
• Rust is per default immutable
– Use the keyword mut to create mutable
• Rust has unsigned types
• No null pointer crashes
• High order functions for iteration
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10. High order functions
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11. Pattern matching
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12. Pattern matching example
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13. Ports and channels
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14. Ports and channels example
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15. Modules and crates
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16. Unit testing
• Compiles with the --test flag and run
• Not external lib but part of the compiler 
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17. The Servo Parallel Browser
Project
• Servo is a web browser engine written in
the Rust language. It is currently developed
on OS X and Linux.
• https://github.com/mozilla/servo
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18. Yegge’s laundry list
• Dave Cheneys blog post on Go
– “While languages like Julia or Rust approach 100%
coverage of Yegge’s laundry list, it is still to be seen if
they will achieve mainstream adoption.”
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19. The list for Go
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