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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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In this chapter, we explored different structural patterns and saw how Rust's features shape their implementation.
We began with the Proxy pattern, discovering that Rust's built-in mechanisms (LazyCell, smart pointers, module visibility) handle most proxy scenarios without custom code, giving us less boilerplate and stronger compile-time guarantees. The Decorator pattern showed us how to add cross-cutting concerns like logging, timing, caching, and range validation to expressions by wrapping them in layers that implement the same Expression trait. Each decorator is transparent to code that doesn't need its added behavior, and decorators compose freely through stacking. The Adapter pattern demonstrated how to bridge incompatible interfaces, allowing our calculator to work with different scientific operation providers through a uniform ScientificOperations trait.
The Facade pattern gave us CalculatorFacade, a single struct that hides the complexity of...