Topic 13. Generics and .NET collections

Goal: become familiar with generics and .NET collections; learn to declare generic methods and classes with type parameter constraints, to choose a collection according to the required operations, and to use List<T>, Dictionary<TKey, TValue>, HashSet<T>, Queue<T>, Stack<T>, PriorityQueue, and iterators.

Lecture contents

1. Generic methods and classes — Why generics are needed · Generic methods · Generic classes and interfaces
2. .NET collections — .NET collections
3. Iterators — Iterators
4. Examples and common mistakes — Example programs · Common mistakes

Practice and review

• Practice — 3 worked examples with complete code and output
• Tasks — 30 variants, each with tasks at three difficulty levels
• Summary — conclusions, self-check questions, and useful links