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Functional Programming with C#

You're reading from   Functional Programming with C# Unlock coding brilliance with the power of functional magic

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Product type Paperback
Published in Jul 2024
Publisher Packt
ISBN-13 9781805122685
Length 258 pages
Edition 1st Edition
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Author (1):
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Alex Yagur Alex Yagur
Author Profile Icon Alex Yagur
Alex Yagur
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Table of Contents (18) Chapters Close

Preface 1. Part 1:Foundations of Functional Programming in C# FREE CHAPTER
2. Chapter 1: Getting Started with Functional Programming 3. Chapter 2: Expressions and Statements 4. Chapter 3: Pure Functions and Side Effects 5. Chapter 4: Honest Functions, Null, and Option 6. Part 2:Advanced Functional Techniques
7. Chapter 5: Error Handling 8. Chapter 6: Higher-Order Functions and Delegates 9. Chapter 7: Functors and Monads 10. Part 3:Practical Functional Programming
11. Chapter 8: Recursion and Tail Calls 12. Chapter 9: Currying and Partial Application 13. Chapter 10: Pipelines and Composition 14. Part 4:Conclusion and Future Directions
15. Chapter 11: Reflecting and Looking Ahead 16. Index 17. Other Books You May Enjoy

Solutions

Exercise 1

Incorporate the Option return type to signify that a user may or may not be found:

public Option<Tower> GetTowerByPosition(Vector2 position)
{
     var tower = _gameMap.FindTowerAt(position);
     return Option<Tower>.Some(tower);
}

Exercise 2

Utilize a built-in check for null inputs that will throw an exception if the user profile is null:

public void ApplyPowerUp(Tower? tower, PowerUp? powerUp)
{
     ArgumentNullException.ThrowIfNull(tower, nameof(tower));
     ArgumentNullException.ThrowIfNull(powerUp, nameof(powerUp));
     tower.ApplyPowerUp(powerUp);
     _gameState.UpdateTower(tower);
}

Exercise 3

Employ pattern matching to address potential null values elegantly:

public string DescribeEnemy(Enemy? enemy)
{
     return enemy switch
   ...
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