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Object-oriented Programming in C# Collection Classes * Collections - History and Overview A historic View on Collection Programming * Generic Collections in C# Overview of Generic Collections in C# The Interface IEnumerable<T> The Interface ICollection<T> The Interface IList<T> Overview of the class Collection<T> Sample use of class Collection<T> Specialization of Collections Specialization of Collections - a realistic example Overview of the class List<T> Sample use of class List<T> Sample use of the Find operations in List<T> Sample use of Sort in List<T> Sample use of BinarySearch in List<T> Overview of the class LinkedList<T> The class LinkedListNode<T> Sample use of class LinkedList<T> Time complexity overview: Collection classes Using Collections through Interfaces * Generic Dictionaries in C# Dictionaries Overview of Generic Dictionaries in C# The interface IDictionary<K,V> Overview of the class Dictionary<K,V> Sample use of class Dictionary<K,V> Notes about Dictionary Classes Time complexity overview: Dictionary classes * Non-generic Collections in C# The non-generic collection library in C# Notes about non-generic Collections * Patterns and Techniques The Iterator Design Pattern Making iterators with yield return Iterator blocks and yield return

In C# iterators are typically used indirectly, via foreach. Still, it is possible to used iterators directly.

Explicit use of iterator - instead of using foreach

Using multiple interators