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 Generics
 Go supports generic programming using type parameters. This lesson shows some examples for employing generics in your code.

 The Go Authors
 https://golang.org

 * Type parameters

 Go functions can be written to work on multiple types using type parameters. The
 type parameters of a function appear between brackets, before the function's
 arguments.

   func Index[T comparable](s []T, x T) int

 This declaration means that `s` is a slice of any type `T` that fulfills the
 built-in constraint `comparable`. `x` is also a value of the same type.

 `comparable` is a useful constraint that makes it possible to use the `==` and
 `!=` operators on values of the type. In this example, we use it to compare a
 value to all slice elements until a match is found. This `Index` function works
 for any type that supports comparison.

 .play generics/index.go

 * Generic types

 In addition to generic functions, Go also supports generic types. A type can
 be parameterized with a type parameter, which could be useful for implementing
 generic data structures.

 This example demonstrates a simple type declaration for a singly-linked list
 holding any type of value.

 As an exercise, add some functionality to this list implementation.

 .play generics/list.go

 * Congratulations!

 You finished this lesson!

 You can go back to the list of [[/tour/list][modules]] to find what to learn next, or continue with the [[javascript:click('.next-page')][next lesson]].
	Generics
	Go supports generic programming using type parameters. This lesson shows some examples for employing generics in your code.

	The Go Authors
	https://golang.org

	* Type parameters

	Go functions can be written to work on multiple types using type parameters. The
	type parameters of a function appear between brackets, before the function's
	arguments.

	func Index[T comparable](s []T, x T) int

	This declaration means that `s` is a slice of any type `T` that fulfills the
	built-in constraint `comparable`. `x` is also a value of the same type.

	`comparable` is a useful constraint that makes it possible to use the `==` and
	`!=` operators on values of the type. In this example, we use it to compare a
	value to all slice elements until a match is found. This `Index` function works
	for any type that supports comparison.

	.play generics/index.go

	* Generic types

	In addition to generic functions, Go also supports generic types. A type can
	be parameterized with a type parameter, which could be useful for implementing
	generic data structures.

	This example demonstrates a simple type declaration for a singly-linked list
	holding any type of value.

	As an exercise, add some functionality to this list implementation.

	.play generics/list.go

	* Congratulations!

	You finished this lesson!

	You can go back to the list of [[/tour/list][modules]] to find what to learn next, or continue with the [[javascript:click('.next-page')][next lesson]].