rust-types

What problem does it solve?

Rust developers frequently face the trade-offs between static and dynamic dispatch, generic code readability, and safe API design. This skill helps you design polymorphic interfaces using generics, trait objects, and type-driven patterns (like Newtype, PhantomData, and type-state) to keep APIs safe, expressive, and efficient.

Core Features & Use Cases

• Explains static vs dynamic dispatch with concrete examples and when to choose each approach.
• Covers Newtype wrappers, PhantomData, type-state, marker/sealed traits, and builder patterns to encode invariants in the type system.
• Guides API design for library boundaries and performance-critical paths, balancing ergonomics with compile-time guarantees.

Quick Start

Define a newtype wrapper around a primitive, implement a trait, and demonstrate a type-state lifecycle to enforce valid state transitions.