Get to know Generics - CSharp Custom Type

CSharp examples for Custom Type:Generics

  1. HOME
  2. CSharp
  3. Custom Type
  4. Generics

Introduction

Generics express reusability with a "template" that contains "placeholder" types.

A generic type declares type parameters-placeholder types to be filled in by the consumer of the generic type.

type Stack<T>, designed to stack instances of type T.

Stack<T> declares a single type parameter T: 

public class Stack<T>
{
  int position;
  T[] data = new T[100];
  public void Push (T obj)  => data[position++] = obj;
  public T Pop()            => data[--position];
}

We can use Stack<T> as follows: 

   

var stack = new Stack<int>();
stack.Push (5);
stack.Push (10);
int x = stack.Pop();        // x is 10
int y = stack.Pop();        // y is 5

public class Stack<T>
{
  int position;
  T[] data = new T[100];
  public void Push (T obj)  => data[position++] = obj;
  public T Pop()            => data[--position];
}

Stack<T> is an open type, whereas Stack<int> is a closed type.


Related Tutorials