Comment Feed for Channel 9 - C9 Lectures: Dr. Don Syme - Introduction to F#, 2 of 3 http://ecn.channel9.msdn.com/o9/ch9/0/1/7/6/2/5/C9LecturesDonSymeFSharpP2_512_ch9.png Channel 9 - C9 Lectures: Dr. Don Syme - Introduction to F#, 2 of 3 F# is Microsoft's first functional programming language to be included as one of Visual Studio's official set of languages. F# is a succinct, efficient, expressive functional/object-oriented programming language under joint development by Microsoft Developer Division and Microsoft Research. During the course of Erik Meijer's fantastic lecture series on functional programming fundamentals several of you asked for examples of specific topics in F#.In part 2 of this 3 part lecture series (see part 1 here), Dr. Syme provides an overview of the following topics:Functional DataPattern MatchingImperative BasicsSequencesNOTE: Announcing the F# February 2010 Release!The F# Team says: We’re excited to announce that we have made available a new release of F# along with the Visual Studio 2010 RC and a matching February 2010 F# CTP for VS2008.  In addition, we’ve launched the F# PowerPack as a CodePlex project, enabling this set of valuable F# extensions to continue to grow and improve separately from the stable core F# releases. Part 1Part 3Get the slides for this lecture series here.Read Don's Blog en Wed, 22 May 2013 10:47:10 GMT Wed, 22 May 2013 10:47:10 GMT Rev9 Re: C9 Lectures: Dr. Don Syme - Introduction to F#, 2 of 3 Don and C9, thanks for these. The videos are a very approachable way to learn.

posted by frou

]]> http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634015240230000000 Thu, 11 Feb 2010 22:27:03 GMT http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634015240230000000 frou Re: C9 Lectures: Dr. Don Syme - Introduction to F#, 2 of 3 You're welcome. More to come.
C

posted by Charles

]]> http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634015241890000000 Thu, 11 Feb 2010 22:29:49 GMT http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634015241890000000 Charles Re: C9 Lectures: Dr. Don Syme - Introduction to F#, 2 of 3 Great tutorial.

Why is let triangle () = .... and not let triangle = ...

The way I understood is the triangle is a value, but the () makes think it's a function.

 

posted by Clem

]]> http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634015410710000000 Fri, 12 Feb 2010 03:11:11 GMT http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634015410710000000 Clem Re: C9 Lectures: Dr. Don Syme - Introduction to F#, 2 of 3 Very nice.  Thank you.

 

I'd much prefer to see a correct model of Blackjack though.  Aces are worth either 1 or 11, and seeing such a flaw in an example is hard to take.   Hopefully, you'll show us how to actually do it in the next part!

 

Thanks!

 

 

posted by jlomax

]]> http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634015812520000000 Fri, 12 Feb 2010 14:20:52 GMT http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634015812520000000 jlomax Re: C9 Lectures: Dr. Don Syme - Introduction to F#, 2 of 3 Cmon ... this tutorial is excellent!! ...nothing here is 'hard to take'!!

 

He shows you (and explains!) every line of code ... if you wish to make this example 'more correct' just spend a few minutes .. adjust the example as you see fit and post about your experience! ...

 

Don Syme ... thanks for doing this!!

 

 

posted by keithfl

]]> http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634015871700000000 Fri, 12 Feb 2010 15:59:30 GMT http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634015871700000000 keithfl Re: C9 Lectures: Dr. Don Syme - Introduction to F#, 2 of 3 Has anybody purchased the Chris Smith book?  (Programming F#: A comprehensive Guide -- isbn: 0596153643)

The are only a few reviews on Amazon (all positive) but I'd appreciate more comments and maybe a little bit more critical perspective before I buy.

 

 

posted by keithfl

]]> http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634015876410000000 Fri, 12 Feb 2010 16:07:21 GMT http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634015876410000000 keithfl Re: C9 Lectures: Dr. Don Syme - Introduction to F#, 2 of 3 I haven't read the whole of Chris Smith's book yet, but so far I can recommend it, it is well written, nicely formatted and generally easy to read. I have two other great F# books as well, but my impression is that Chris Smith's book is the best introduction to F# I've seen yet.

 

Don & C9, thanks for another great video!

BTW: I simply cannot resist the temptation to point out that one of the code examples can be simplified, in the allFiles function, the following is used:

for file in Directory.GetFiles dir do
  yield file

 

which is equivalent to:

yield! Directory.GetFiles dir

 

 

posted by Jarle Stabell

]]> http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634016094960000000 Fri, 12 Feb 2010 22:11:36 GMT http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634016094960000000 Jarle Stabell Re: C9 Lectures: Dr. Don Syme - Introduction to F#, 2 of 3 I bought Chris Smith's Programming F#. It's excellent book.  Concise explanation.

posted by nyinyithann

]]> http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634016367170000000 Sat, 13 Feb 2010 05:45:17 GMT http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634016367170000000 nyinyithann Re: C9 Lectures: Dr. Don Syme - Introduction to F#, 2 of 3 Thanks  Charles and Dom.

It's really useful for someone like me who is learning F#.

I do hope that more and more F# shows are coming in future.

And i really would like to watch the discussion about FP between Erik and Dom. 

Charles... Can u arrange? Smiley

posted by nyinyithann

]]> http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634016371600000000 Sat, 13 Feb 2010 05:52:40 GMT http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634016371600000000 nyinyithann Re: C9 Lectures: Dr. Don Syme - Introduction to F#, 2 of 3 There's also a most excellent interview with Don on Infoq. Here Don touches on the background for the design of F# and how to make it fit with .Net. It's quite enlightening and I certainly learned a lot from it.

 

http://www.infoq.com/interviews/F-Sharp-Don-Syme

posted by exoteric

]]> http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634016714530000000 Sat, 13 Feb 2010 15:24:13 GMT http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634016714530000000 exoteric Re: C9 Lectures: Dr. Don Syme - Introduction to F#, 2 of 3 Yes. I've been wanting to shoot a Don/Erik E2E for a long time.. Hopefully, we can do this in April..

C

posted by Charles

]]> http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634016856130000000 Sat, 13 Feb 2010 19:20:13 GMT http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634016856130000000 Charles Re: C9 Lectures: Dr. Don Syme - Introduction to F#, 2 of 3 I agree, an in depth discussion between Erik and Don would be fun. I wouldn't mind seeing them point out the major differences between F# and Haskell, as well as how to write Haskell-esque F#. I would think we would see a lot of material similar to Matt Podwysocki's articles on monads. Smiley

 

By the way, if you are interested in more videos, community, etc. around F#, please join Community for F# (http://c4fsharp.groups.live.com). We have Live Meetings every third Tuesday of each month at 12:00 pm EST. Details can be found on the Live Group (you'll have to join to see it though as Live Groups doesn't allow anything to be just public :-/). Hopefully Don will join us soon! Tomorrow we have Steffen Forkmann talking about Fake (F# make), Natural Spec, and Functional NHibernate.

posted by Ryan Riley

]]> http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634018904600000000 Tue, 16 Feb 2010 04:14:20 GMT http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634018904600000000 Ryan Riley Re: C9 Lectures: Dr. Don Syme - Introduction to F#, 2 of 3 Excellent. I am looking forward to seeing part 3.

posted by rgruian

]]> http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634020470430000000 Wed, 17 Feb 2010 23:44:03 GMT http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634020470430000000 rgruian Re: C9 Lectures: Dr. Don Syme - Introduction to F#, 2 of 3 Using snippets would make things a lot easier. Won't have to copy and paste code from the slides.

posted by MrADubbATL

]]> http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634023839280000000 Sun, 21 Feb 2010 21:18:48 GMT http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634023839280000000 MrADubbATL Re: C9 Lectures: Dr. Don Syme - Introduction to F#, 2 of 3 Hi,

 

 First of all, excellent presentations.

 

 A couple of questions that I will submit more to come after I finish watching:

 - why not have all the collection as seq ?

 - is there a unit testing framework available for F# ?, since it's a .net language I guess I can use stuff like nunit or xunit. 

 

Thank you,

posted by calinus

]]> http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634024242330000000 Mon, 22 Feb 2010 08:30:33 GMT http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634024242330000000 calinus Re: C9 Lectures: Dr. Don Syme - Introduction to F#, 2 of 3 The "seq" type is just an alias for "IEnumerable", and all the F# collection types implement the IEnumerable interface, so you can treat e.g. a list of integers as a seq of integers.

 

Yes, you can use things like NUnit (we actually use this on the F# team for some of our unit testing).  There are also some unit testing tools developer in F#, like FsCheck.  You might check out http://stackoverflow.com/questions/1989487/f-development-and-unit-testing to learn more.

posted by brianmcn

]]> http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634028491150000000 Sat, 27 Feb 2010 06:31:55 GMT http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634028491150000000 brianmcn Re: C9 Lectures: Dr. Don Syme - Introduction to F#, 2 of 3 hey Charles can you arrange something with Eric and Don going deep or something like that, to talk about the shift in the fp mindset for imperative programmers (for us which our first language was pascal and second ansi c and end to c# or vb it is quite a step immutability etc) or if this isn't feasible just invite Don to talk about his new book about f# which is coming soon
thank you
Alex

posted by ailatzis

]]> http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634081438040000000 Thu, 29 Apr 2010 13:16:44 GMT http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634081438040000000 ailatzis Re: C9 Lectures: Dr. Don Syme - Introduction to F#, 2 of 3 Next time Don's in town I will arrange an Erik/Don conversation. C

posted by Charles

]]> http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634081509220000000 Thu, 29 Apr 2010 15:15:22 GMT http://channel9.msdn.com/Series/C9-Lectures-Dr-Don-Syme-Introduction-to-F-/C9-Lectures-Dr-Don-Syme-Introduction-to-F-2-of-3#c634081509220000000 Charles