The document discusses how lambdas can be used for various programming patterns and tasks such as mapping and reducing data, creating navigable domain-specific languages, handling events more cleanly, and abstracting common conditional and null checking logic. Lambdas offer a concise syntax for anonymous methods and can be used to make code more readable, refactorable, and maintainable compared to traditional approaches using delegates. Examples are provided for how lambdas can simplify programming patterns around asynchronous execution, expression analysis, reflection, and other tasks.

1. You Can't Dance The Lambda George Mauer Senior Developer Westway Terminal Co [email_address] x => x.BeAwesome( ) Why I use lambdas all the time for everything and so should you

3. Delegates Review

4. Lambda Syntax

6. In-code patterns

7. Architectural patterns

8. Advanced functionality

11. Allows for currying

12. Used for the magic of all LINQ2X providers A Delegate is an invokable object A lambda function is nice delegate syntax

14. Widely used in winforms and webforms Delegates Instantiate delegate Declare delegate Use delegate Equivalent

17. Supplanted in .NET 3.5 by Func<T, R> - just set R to bool

18. Many combinations provided: Func<R>, Func<T, R>, Func<T1, T2, R> public delegate bool Filter <T>(T item); Parameter1 Type, Return Type Func<string, bool> instance

20. Single-line lambdas do not need braces, semi-colons, or return keyword

31. Transform a starting point to an IRegistration Get Intellisense from the start!

34. Each test evaluates a post-condition

35. Sometimes useful to test pre-and post condition combinations

36. Each test sets conditions and expectations. Fixture executes them

39. Where all the meat of LINQ Providers is

43. Easy asynchronous execution

45. IfNotNull()

47. Inline event methods

48. Proper event types