dotNet Miami - April 19, 2012: Presented by Horacio Nunez: In this talk we are going to learn the basics of programming with F# from Visual Studio 2010. After talking a bit about the genesis of F# we will go through some examples illustrating the functional ways of F# and how it aligns with the other citizens of the managed world. Among the F# features we will visit are High Order Functions, Pattern Matching and the Asynchronous workflows.

1. An Introduction to
F#
Horacio Nunez
{hnh12358@gmail.com, horatio.info}

2. What is F#?
F# Interactive
F# 101 (less than 10 minutes!)
Walkthrough: Functional
Numerical Matrixes
Online Resources

3. F# is multi-paradigm
programming language targeting
the .NET framework

4. functional
object oriented
imperative F#
language oriented

5. Immutable values and data types
(No State => No Shared Memory)
let x = 10
x = 10 //<!-- boolean

6. High Order Functions
(functions can be parameters and
results of other functions)

7. Type Inference
Think in C#’s var… everywhere

8. Declarative
Express the desired result, not the
step-by-step recipe

9. Lazy Evaluation
Use values only when you really
need it

10. Pattern Matching
The compiler “understands” types

11. Imperative

12. Mutable values and data types
(State => Probable Shared Memory)
let mutable x = 10
x <- 10

13. Object
Oriented

14. F# can consume and create OOP
designs seamlessly

15. also…
F# becomes MSIL, hard
to read, but MSIL

16. F# is fully supported in Visual
Studio except for GUI Designers

17. What is F#?
F# Interactive
F# 101 (less than 10 minutes!)
Walkthrough: Functional
Numerical Matrixs
Online Resources

18. What is F#?
F# Interactive
F# 101 (less than 10 minutes!)
Walkthrough: Functional
Numerical Matrixs
Online Resources

19. What is F#?
F# Interactive
F# 101 (less than 10 minutes!)
Walkthrough: Functional
Numerical Matrixs
Online Resources

20. Functional Abstractions for
Numerical Matrixes

21. Have you ever tried to create a
Matrix of order Int32.MaxValue?

22. Out of Memory Exception!

23. What is F#?
F# Interactive
F# 101 (less than 10 minutes!)
Walkthrough: Functional
Numerical Matrixs
Online Resources

24. ONLINE RESOURCES
Don Syme’ Blog (F# Designer)
http://blogs.msdn.com/b/dsyme/
Tomas Petricek's’ Blog
http://tomasp.net/

25. ONLINE RESOURCES
F# Snippets
http://fssnip.net/
Channel 9
http://channel9.msdn.com/
StackOverflow
http://stackoverflow.com/