Generics
Specialization in Rust and Why It Is Still Unstable
Specialization would let a blanket impl have faster special cases. After years of work it is still nightly only, held back by soundness problems with lifetimes.
7 min read
Tag
traits
9 posts
Generics
Dependency Injection in Rust With Traits and Generics
Rust needs no DI container. Define a trait for the dependency, take it in the constructor and wire the real types in main. Tests pass a fake instead.
8 min read
Generics
Extension Traits in Rust to Add Methods to Foreign Types
Rust forbids adding inherent methods to foreign types, but a trait you define can. Extension traits are how itertools, futures and tokio add methods to the standard library.
8 min read
Generics
The Orphan Rule in Rust and How to Work Around It Explained
The orphan rule says you can implement a trait only if the trait or the type is yours. See why it exists, the usual errors and the standard workarounds.
7 min read
Generics
Blanket Implementations in Rust and Their Coherence Limits
A blanket implementation implements a trait for every type that meets a bound. See how ToString and Into work, the coherence rules that limit you and a safe pattern.
6 min read
Generics
Supertraits in Rust and Building Trait Hierarchies Safely
A supertrait says a trait requires another one. See the syntax, how methods are inherited, trait objects with supertraits and upcasting.
6 min read
Generics
Trait Bounds and Where Clauses in Rust Explained Made Clear
Trait bounds say what a generic type must be able to do. Learn the T: Trait syntax, where clauses, multiple bounds and when each form reads better.
7 min read
Generics
Traits in Rust Explained as Shared Behavior With Examples
A trait is a named set of methods a type promises to provide. See how to define one, implement it, give it default methods and use it as a bound.
7 min read
GenericsGuide
Traits Generics and Trait Objects and How to Choose
A guide to choosing between generics, impl Trait, trait objects and enums in Rust, with one example solved four ways and the costs of each.
18 min read