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RUST 

ABOUT ME Giovanny Gongora @Gioyik Website: gioyik.com SPOILER ALERT: I will be hired By Mozilla to work with Developer Relations team 

BRIEF INTRODUCTION • First inventor: Graydon Hoare (8 years ago) • Mozilla Foundation (~2009) • Zero-cost abstraction • High concurrency support • Memory safety by ownership • Lifetime concept • Servo <3 

AND THAT IN REAL LIFE… 

OWNERSHIP 

SAFETY Problems related to safety cause not only software crash, also security vulnerabilities. • Null pointer deference • Double free • Use-after-free (more pointer problems..) 

MEMORY MANAGEMENT 

WHAT DO OTHER LANGUAGES DO? • Most languages with a garbage collector heap- allocate by default • Every value is boxed • There are some possible optimizations that don’t make it true 100% of the time 

GARBAJE COLLECTION • Computer cannot know the exact timing that each object should be freed • Need of more memory and CPU power • No predictability • Limited concurrency • Large code size 

STACK 

STACK 

STACK 

HEAP 

HEAP 

RUNTIME EFFICIENCY • Managing the memory for the stack is trivial • Managing memory for the heap is non-trivial 

CONCURRENCY 

RUST INSIDE OTHER LANGUAGES 

THE PROBLEM Star ten threads. Inside each thread, count from one to five million. After all then threads are finished, print out ‘done’. • Rust has something called a ‘foreign function interface’, often shortened to ‘FFI’ • Rust has support for FFI in both directions • Let’s try it with examples in Ruby, Python and JavaScript 

CRATES AND MODULES 

CRATES AND MODULES When a project starts getting large, it’s considered good software engineering practice to split it up into a bunch of smaller pieces, and then fit them together. • Rust has a module system • A crate is synonymous with a “library” or “package” in other languages • “Cargo” as the name of Rust’s package management tool • Crates can produce an executable or a library depending on the project • Modules allow you to partition your code 

AND FUNCTIONAL PROGRAMMING? 

SO, WHAT’S NEXT FOR RUST? • Compiler Plugins • Inline Assembly • No stdlib • Advanced linking • Benchmark Test • … and more, trust me :) 

PLAY.RUST-LANG.ORG 

THANKS Giovanny Gongora Why Rust is awesome? @Gioyik Website: gioyik.com