Actions, Predicate, and Func

In C#, Action, Predicate, and Func are powerful delegates that help us write flexible and reusable code. Let’s break down what they do and when to use them.

Action

• Represents a method that returns void.
• Can take 0 to 16 input parameters.
• Commonly used for operations that don't return a value.

Predicate

• Represents a method that returns a boolean (bool).
• Takes exactly one input parameter of type T.
• Ideal for conditions and filtering.

Func

• Represents a method that returns a value.
• Can take 0 to 16 input parameters.
• The last type parameter defines the return type.

Conclusion

• Understanding Action, Predicate, and Func helps you:
• Write more concise and expressive code.
• Avoid unnecessary custom delegates.
• Work easily with LINQ, events, and functional programming patterns.
• Use them wisely to make your C# code cleaner, modular, and reusable