Design Patterns in C#: A Hands-on Guide with Real-world Examples

© Vaskaran Sarcar 2020

V. SarcarDesign Patterns in C#https://doi.org/10.1007/978-1-4842-6062-3_18

18. Iterator Pattern

Vaskaran Sarcar¹ 

(1)

Garia, Kolkata, West Bengal, India

 

This chapter covers the Iterator pattern.

GoF Definition

Provide a way to access the elements of an aggregate object sequentially without exposing its underlying representation.

Concept

Iterators are generally used to traverse a container (or a collection of objects) to access its elements without knowing how the data are stored internally. It is very useful when you need to traverse different kinds of collection objects in a standard and uniform way. Figure 18-1 shows a sample and most common diagram for an Iterator pattern.

Figure 18-1

A sample diagram for an Iterator pattern

The ...