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generics

Code written once for many types, with the type left as a parameter.

Generics let a function, struct, enum, trait, or impl take type parameters (like T), filled in with concrete types where it is used.

Examples

  • fn count_above<T: PartialOrd>(items: &[T], limit: &T) -> usize works for a slice of f64 temperatures, i32 scores or anything else comparable.

See also

trait bound monomorphization const generics
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