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tutorial: Add a language overview to the introduction

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Brian Anderson 2012-07-06 12:14:32 -07:00
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doc/tutorial.md
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@ -11,6 +11,33 @@ comparisons to other languages in the C family. The tutorial covers
the whole language, though not with the depth and precision of the
[language reference](rust.html).
## Language Overview
Rust is a systems programming language with a focus on type safety,
memory safety, and performance. It is intended for writing large, high
performance applications while preventing several classes of errors
commonly found in languages like C++. Rust has a sophisticated memory
model that enables many of the efficient data structures used in C
while disallowing invalid memory access that would otherwise cause
segmentation faults. Like other systems languages it is statically
typed and compiled ahead of time.
As a multi-paradigm language it has strong support for writing code in
procedural, functional and object-oriented styles. Some of it's nice
high-level features include:
* Pattern matching and algebraic data types (enums) - common in functional
languages, pattern matching on ADTs provides a compact and expressive
way to encode program logic
* Task-based concurrency - Rust uses lightweight tasks that do not share
memory
* Higher-order functions - Closures in Rust are very powerful and used
pervasively
* Polymorphism - Rust's type system features a unique combination of
Java-style interfaces and Haskell-style typeclasses
* Generics - Functions and types can be parameterized over generic
types with optional type constraints
## First Impressions
As a curly-brace language in the tradition of C, C++, and JavaScript,