Functional Programming with C# - Simon Painter - NDC London 2023

Discover how to write better C# code with functional programming principles, including immutable types, referential transparency, and pure functions, for improved predictability, robustness, and testability.

Key takeaways

Despite the fear of imrativeness, functional programming is easy to understand and test
Immutable types can be used in C# for better code quality and predictability
Referential transparency and pure functions are essential concepts in functional programming
Use of functions as first-class citizens and higher-order functions for more flexibility
Problems can be solved without creating intermediate variables with partial application
Enumerables are lazy, allowing for better performance
Pattern matching can be used for more readable and testable code
C# is a hybrid language that supports both paradigmatic and object-oriented programming
For better code quality, use functions with no side effects and avoid mutable state
C# 6 and higher support switch expressions for pattern matching
Use functional programming for better robustness and less bugs

Functional Programming with C# - Simon Painter - NDC London 2023

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