Learning Functional Programming in Go

Generics

Parametric polymorphism means generics. A generic function or a data type can be written to handle any data value using the same logic, without having to cast the value to a specific data type. This greatly improves code reuse.

The following is a C# code example of a generic IsEqual implementation. The generic IsEqual function will accept any type (that implements Equals). We pass IsEqual integers and strings by simply indicating the type T during runtime, at the moment IsEqual is executed:

namespace Generics{   private static void Main() {      if(Compute<int>.IsEqual(2, 2)) {            Console.WriteLine("2 isEqualTo 2");         }      if(!Compute<String>.IsEqual("A", "B")) {            Console.WriteLine("A is_NOT_EqualTo B");         }   }    public class Compute<T> {        public static ...