m04-zero-cost

Rust throws compiler error E0277 when a trait bound is not satisfied by your generic type. This Skill helps you analyze your abstraction level and type relationships instead of blindly adding bounds to resolve the mismatch.

Choosing between static dispatch and dynamic dispatch in Rust depends on your performance needs. This Skill provides decision frameworks to evaluate generics versus trait objects for optimal compile-time versus runtime polymorphism.

Static dispatch resolves trait calls at compile time using generics or impl Trait, while dynamic dispatch resolves them at runtime using trait objects. This Skill guides you through the trade-offs of each zero-cost abstraction mechanism.

You fix Rust compiler error E0599 by verifying that the method exists and the trait is properly implemented for your type. This Skill provides tracing mechanisms to identify missing trait implementations and guide correct abstraction design.

You should use trait objects instead of generics in Rust when you need runtime flexibility over compile-time performance. This Skill offers decision trees to determine the right abstraction level and dispatch mechanism for your specific use case.

Rust compiler error E0038 occurs when trying to create a trait object from a trait that is not object safe. This Skill helps you understand the constraints of dynamic dispatch and adjust your trait definitions to achieve object safety.