Comment Feed for Channel 9 - Tao Liu: F# Design Patterns http://ak.channel9.msdn.com/ch9/4895/e65504a0-5d93-4a11-af72-9f78013d4895/TaoLiuFSharpDesignPatterns_100_ch9.jpg Channel 9 - Tao Liu: F# Design Patterns Tao Liu, an engineer on the F# team, explains (and demonstrates) the importance and value of design patterns for F#. Many programmers who work on large or complex software systems are accustomed to employing design patterns in the development of these systems.  For experienced C# developers wanting to add F# to their toolchain for large scale software development, design patterns play a very important role. Historically, there have been little to no formal design patterns for F#. This is no longer the case. Tune in.Further reading and sample code employing design patterns in F# 3.0:http://fsharp3sample.codeplex.com/ en Sun, 19 May 2013 06:28:48 GMT Sun, 19 May 2013 06:28:48 GMT Rev9 Re: Tao Liu: F# Design Patterns posted by nim

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545043525295053 Tue, 18 Oct 2011 03:12:32 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545043525295053 nim Re: Tao Liu: F# Design Patterns posted by Jane

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545056290411376 Tue, 18 Oct 2011 03:33:49 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545056290411376 Jane Re: Tao Liu: F# Design Patterns Great presentation! Have been waiting for this long time. 

posted by anita89

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545056376370016 Tue, 18 Oct 2011 03:33:57 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545056376370016 anita89 Re: Tao Liu: F# Design Patterns nice GI function on design pattern. Smiley

posted by Joh_box

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545059505698214 Tue, 18 Oct 2011 03:39:10 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545059505698214 Joh_box Re: Tao Liu: F# Design Patterns Woo!

posted by Bubble_Jane

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545061242557208 Tue, 18 Oct 2011 03:42:04 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545061242557208 Bubble_Jane Re: Tao Liu: F# Design Patterns posted by Heather

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545086123456824 Tue, 18 Oct 2011 04:23:32 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545086123456824 Heather Re: Tao Liu: F# Design Patterns this talk makes me think F# is something for real world app. Nice talk.

posted by 8west

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545087005735100 Tue, 18 Oct 2011 04:25:00 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545087005735100 8west Re: Tao Liu: F# Design Patterns @Heather: +1

posted by paulKJ

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545089484618426 Tue, 18 Oct 2011 04:29:08 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545089484618426 paulKJ Re: Tao Liu: F# Design Patterns @nim:nice nice

posted by parm

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545097094981054 Tue, 18 Oct 2011 04:41:49 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545097094981054 parm Re: Tao Liu: F# Design Patterns  finally have a nice F# design pattern talk

posted by parm

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545098693635597 Tue, 18 Oct 2011 04:44:29 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545098693635597 parm Re: Tao Liu: F# Design Patterns thanks @@

posted by victor

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545130439362975 Tue, 18 Oct 2011 05:37:23 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545130439362975 victor Re: Tao Liu: F# Design Patterns nice talk about F# and design patterns.

posted by footelevator

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545146092945031 Tue, 18 Oct 2011 06:03:29 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545146092945031 footelevator Re: Tao Liu: F# Design Patterns posted by harry

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545194907414933 Tue, 18 Oct 2011 07:24:50 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545194907414933 harry Re: Tao Liu: F# Design Patterns I just fell in love with generic explicit member constraints.

posted by philjay

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545217577339181 Tue, 18 Oct 2011 08:02:37 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545217577339181 philjay Re: Tao Liu: F# Design Patterns - The patterns raised are Patterns of Reusable **Object Oriented** Software. So they show how to use the OO side of F# - using it's language features - not really F#'s functional features.
- These mostly pertain to statically typed OO. e.g Ruby and other dynamically typed languages don't need an explicit visitor pattern - or many other patterns. So if this set don't really belong in dynamically typed languages - do they belong in a multi-paradigm functional language ?
- C++ - multiparadigm - and look at how long it has taken for people to catch on to the functional derived STL. Not until Boost and Lambdas did most c++ programmmers venture into algorithms - i.e functional - territory.
- Most programmers i know barely write OO code - it's procedural with classes. But then it's hard to write OO code when your talking for example to a WCF services that are in pretty much procedural.
- I really thought Axum or spec# might shake this up a bit - really make people think about using the right language for the task at hand - but I guess they are too different for now.

As a programmer in a time of lots of change (fun) i would love to see some clarification of how to use all these varied techniques and languages well - I'm just wary of multiparadigm confuzzling !

posted by DazedAndConfused

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545225573551248 Tue, 18 Oct 2011 08:15:57 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545225573551248 DazedAndConfused Re: Tao Liu: F# Design Patterns
http://www.haskell.org/haskellwiki/The_Monad.Reader/Issue3/Functional_Programming_vs_Object_Oriented_Programming - and specifically look at
5 OO and FP Styles Contrasted

This link is haskell oriented, but really i think it highlights OO and functional styles being almost opposed. Big brains like Dr Lammel could probably discuss this, and i think it ties in with the expression problem. Charles - after the fantastic expression/type class series - any chance of interviewing Dr Ralf again about OOHaskell and combined OO / Functional F# languages ?

Simple question - guess i'm a bit of an idiom..... err i mean idiot
"Help me Obi Wan Kenobi ! If i were to write a enterprise app in F# when should i even use an object (record type with members/mutable data) ?" In ViewModels (e.g for binding too), for interop with c#,

posted by DazedAndConfused

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545308815430031 Tue, 18 Oct 2011 10:34:41 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545308815430031 DazedAndConfused Re: Tao Liu: F# Design Patterns posted by Christ

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545365456656432 Tue, 18 Oct 2011 12:09:05 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545365456656432 Christ Re: Tao Liu: F# Design Patterns posted by Wei

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545681546457590 Tue, 18 Oct 2011 20:55:54 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545681546457590 Wei Re: Tao Liu: F# Design Patterns A very timely presentation. Now I believe more F# is suitable as a language for commercial applications.

posted by paulqing

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545702744034083 Tue, 18 Oct 2011 21:31:14 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545702744034083 paulqing Re: Tao Liu: F# Design Patterns posted by Bella

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545839756376439 Wed, 19 Oct 2011 01:19:35 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545839756376439 Bella Re: Tao Liu: F# Design Patterns posted by Andrew

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545871149092915 Wed, 19 Oct 2011 02:11:54 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545871149092915 Andrew Re: Tao Liu: F# Design Patterns posted by Jie

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545901825124409 Wed, 19 Oct 2011 03:03:02 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545901825124409 Jie Re: Tao Liu: F# Design Patterns Wonderful! Now, "F" does not only mean facebook. Good job Tao and F# team.

posted by harveyhuo

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545910645728799 Wed, 19 Oct 2011 03:17:44 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634545910645728799 harveyhuo Re: Tao Liu: F# Design Patterns Do the generic explicit member constraints, permit a form of generic operators? If we know the actual method used by the operator to perform the operation.

posted by AdamSpeight2008

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634546208373788029 Wed, 19 Oct 2011 11:33:57 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634546208373788029 AdamSpeight2008 Re: Tao Liu: F# Design Patterns posted by Jack Lu

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634546413627092013 Wed, 19 Oct 2011 17:16:02 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634546413627092013 Jack Lu Re: Tao Liu: F# Design Patterns posted by coco

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634546710750810977 Thu, 20 Oct 2011 01:31:15 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634546710750810977 coco Re: Tao Liu: F# Design Patterns

posted by may

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634546744030500691 Thu, 20 Oct 2011 02:26:43 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634546744030500691 may Re: Tao Liu: F# Design Patterns posted by Sandy

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634546750673163483 Thu, 20 Oct 2011 02:37:47 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634546750673163483 Sandy Re: Tao Liu: F# Design Patterns Big Smile

posted by ETBoy

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634546856021921422 Thu, 20 Oct 2011 05:33:22 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634546856021921422 ETBoy Re: Tao Liu: F# Design Patterns Very nice presentation. I am more convinced to use F# for commercial applications.

posted by Annlee

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634547733432889364 Fri, 21 Oct 2011 05:55:43 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634547733432889364 Annlee Re: Tao Liu: F# Design Patterns Recently did a poc with F# and Solver Foundation for an optimization model for part purchasing.

The model's input data comes in multiple Excel files.

F# came in really handy for the complex data manipulation that was required to take the source data and feed it to the solver foundation model.

Data manipulation is one of the areas where functional languages do exceptionally well. Such processing would have been untenable with Java (and even C# despite LINQ).

Suffice is to say that the PoC is very well received and has already saved the company mega bucks.

posted by fwaris

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634548402597275544 Sat, 22 Oct 2011 00:30:59 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634548402597275544 fwaris Re: Tao Liu: F# Design Patterns Following and using F# allows to stay on forefront of new language developments... async workflows, generic invoke, TypeProviders... domain exploration, and so much more... keep up the amazing features coming...  I have used F# for prototyping financial calculations for a bank; really extremely pleasant development experience.

posted by WinInsider

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634548412522544479 Sat, 22 Oct 2011 00:47:32 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634548412522544479 WinInsider Re: Tao Liu: F# Design Patterns

posted by Rachel

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634548793237312984 Sat, 22 Oct 2011 11:22:03 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634548793237312984 Rachel Re: Tao Liu: F# Design Patterns Recommended by one of my team members, great demo on F# and agree with the above comments about commercial use F#, it is time to use F# to our product.

Devil

posted by LUKE5201

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634551966446527796 Wed, 26 Oct 2011 03:30:44 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634551966446527796 LUKE5201 Re: Tao Liu: F# Design Patterns Big Smile Great demo !

posted by Victor_123

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634556920427905529 Mon, 31 Oct 2011 21:07:22 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634556920427905529 Victor_123 Re: Tao Liu: F# Design Patterns posted by Lisa

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634586634402385148 Mon, 05 Dec 2011 06:30:40 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634586634402385148 Lisa Re: Tao Liu: F# Design Patterns Great, examples make things easily to understand.

posted by TechNeting

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634654284302052829 Tue, 21 Feb 2012 13:40:30 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634654284302052829 TechNeting Re: Tao Liu: F# Design Patterns Hello,

First of all, thanks, F#-team is making a great job. And these kind of videos are good to get a great language some attention.

But I have some small critics to these samples... Samples teach programmers so they shouldn't teach bad things. They should teach best practices, not tricks or hacks.

Tricks are good to know also... But maybe these samples could be divided to two sections: 1. howto, 2. tricks.

1. Why to teach programmers to use mutable state so much? There is a very good reason why mutable state is not default in F#.

2. Why using inline keyword in samples? Inline is usually just for interactive. Msdn says this: "you should avoid using inline functions for optimization unless you have tried all other optimization techniques". So why do we need this in basic samples? http://msdn.microsoft.com/en-us/library/dd548047.aspx

I'm F#-programmer, and one of those who thinks that Design Patterns are common "best practice" ways to manage object-oriented problems that doesn't exist in functional language.

 

posted by Thorium

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634663664081646838 Sat, 03 Mar 2012 10:13:28 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634663664081646838 Thorium Re: Tao Liu: F# Design Patterns Wonderful presentation, need more deep materials like this.

posted by MattC2

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634702218786722806 Tue, 17 Apr 2012 01:11:18 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634702218786722806 MattC2 Re: Tao Liu: F# Design Patterns Very nice.

posted by dwu777

]]> http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634759859540945921 Fri, 22 Jun 2012 18:19:14 GMT http://channel9.msdn.com/posts/Tao-Liu-F-Design-Patterns#c634759859540945921 dwu777