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Book Overview & Buying
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Table Of Contents
Design Patterns and Best Practices in Rust
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Pattern matching has been a fundamental feature of functional programming languages since ML (1973). The concept allows destructuring data structures and binding variables in a single, exhaustive expression that the compiler verifies for completeness. Languages such as ML, OCaml, Haskell, Scala, and F# have made pattern matching central to their design, developing sophisticated techniques over decades of research and practice.
Rust's pattern-matching implementation draws directly from this functional programming heritage, particularly ML and its descendants. What Rust adds is integration with the ownership system and move semantics. Patterns in Rust can move, borrow, or copy values depending on the context, and the compiler ensures that matched values respect ownership rules. Exhaustiveness checking interacts with the type system to guarantee all cases are handled, making pattern matching both safe and zero-cost.
Message routing in Samsa requires...