Every article tagged Generics, in one place.
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Generics let you write code that works with many types while keeping the connection between input and output types. Think of them as function parameters, but for types. The problem function first(items: any[]) { return items[0]; } const n = first([1, 2, 3]); /...
A trait defines behaviour that types can implement, similar to an interface. Generics let functions work with any type that implements the traits they need. Defining and implementing a trait trait Notifier { fn send(&self, to: &str, message: &str) -> Result<()...
Generics arrived in Go 1.18. They let you write functions and types that work for many types while staying type-safe, without falling back to interface{} and type assertions. A generic function func Map[T, U any](items []T, fn func(T) U) []U { out := make([]U,...
