Microsoft F# and functional programming
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This document discusses F# and functional programming. F# is a multi-paradigm language from Microsoft that supports functional, object-oriented and imperative programming. It provides powerful and flexible syntax that allows for shorter, more elegant code and increased programmer productivity. Functional programming emphasizes declaring what computations should be done rather than how to do them, and it enables easy parallel and asynchronous programming for scalability. The document provides examples of code in F# compared to C# and outlines some benefits of functional languages.
![Code
//F# //C#
open System using System;
let a = 2
namespace ConsoleApplication1
Console.WriteLine a
{
class Program
{
static int a()
{
return 2;
}
static void Main(string[] args)
{
Console.WriteLine(a);
}
MoreNoise }
ThanSignal! }
F#温稼糸油韓顎稼界岳庄看稼温鉛油沿姻看乙姻温馨馨庄稼乙 RadekM鱈ka 9](https://image.slidesharecdn.com/f-110210155735-phpapp01/85/Microsoft-F-and-functional-programming-9-320.jpg)
Microsoft F# and functional programming
- 2. Presentation Agenda 1. Motivation&history 2. FeaturesofF#language 3. Abilitiesoffunctionalprogramming 4. F#codeexamples F#温稼糸油韓顎稼界岳庄看稼温鉛油沿姻看乙姻温馨馨庄稼乙 RadekM鱈ka 2
- 3. What is F# About? NewfunctionallanguagefromMicrosoft WhyisMicrosoftinvestinginfunctional programming? F#温稼糸油韓顎稼界岳庄看稼温鉛油沿姻看乙姻温馨馨庄稼乙 RadekM鱈ka 3
- 4. What is F# About? NewfunctionallanguagefromMicrosoft WhyisMicrosoftinvestinginfunctional programming? Powerfullanguage Simplicity Programmersproductivity Scalability F#温稼糸油韓顎稼界岳庄看稼温鉛油沿姻看乙姻温馨馨庄稼乙 RadekM鱈ka 4
- 5. What is F# About? F#ismultiparadigm.NETlanguage Functional programming Objectorientedprogramming Imperativeprogramming .NET>builtonCLI Staticallytypedlanguage F#温稼糸油韓顎稼界岳庄看稼温鉛油沿姻看乙姻温馨馨庄稼乙 RadekM鱈ka 5
- 6. About History Projectsince2002atMicrosoftResearch January2008 firstCTP FullsupportinVisualStudio2010 F#温稼糸油韓顎稼界岳庄看稼温鉛油沿姻看乙姻温馨馨庄稼乙 RadekM鱈ka 6
- 7. Functional Programming SAYINGWHATRATHERTHANHOW how=imperativeway what=declarativeway(betterreadable) Immutability Parallel&async.programming(scalability) F#温稼糸油韓顎稼界岳庄看稼温鉛油沿姻看乙姻温馨馨庄稼乙 RadekM鱈ka 7
- 8. Functional Languages Expressiblelanguages Butwhy? Easytesting Scalability Processinglargesetsofdata Effectiveness F#,C#,Haskel,Erlang,Scala,Lisp F#温稼糸油韓顎稼界岳庄看稼温鉛油沿姻看乙姻温馨馨庄稼乙 RadekM鱈ka 8
- 9. Code //F# //C# open System using System; let a = 2 namespace ConsoleApplication1 Console.WriteLine a { class Program { static int a() { return 2; } static void Main(string[] args) { Console.WriteLine(a); } MoreNoise } ThanSignal! } F#温稼糸油韓顎稼界岳庄看稼温鉛油沿姻看乙姻温馨馨庄稼乙 RadekM鱈ka 9
- 10. 酷#油永鉛艶温壊顎姻艶 C#Pain abstractclassCommand typeCommand=Commandof(Rover>unit) { publicvirtualvoidExecute(); } letBreakCommand = abstractclassMarsRoverCommand :Command Command(funrover>rover.Accelerate(1.0)) { protectedMarsRover Rover{get;priv letTurnLeftCommand = Command(funrover>rover.Rotate(5.0<degs>)) publicMarsRoverCommand(MarsRover rov { this.Rover =rover; } } classBreakCommand :MarsRoverCommand { publicBreakCommand(MarsRover rover) :base(rover) { } publicoverridevoidExecute() { Rover.Rotate(5.0); } } classTurnLeftCommand :MarsRoverCommand { F#温稼糸油韓顎稼界岳庄看稼温鉛油沿姻看乙姻温馨馨庄稼乙 RadekM鱈ka 10
- 11. Summary F#ismultiparadigmlanguage,mainlyfunctional Powerful Flexiblesyntax Shorter&elegantcode Increaseproductivity Parallel&async.programming= extremelyeasy F#温稼糸油韓顎稼界岳庄看稼温鉛油沿姻看乙姻温馨馨庄稼乙 RadekM鱈ka 11
- 12. Sources http://www.fsharp.net RealWorldFunctionalProgramming ProgrammingF#(ChrisSmith) (TomasPetricek,JohnSkeet) F#温稼糸油韓顎稼界岳庄看稼温鉛油沿姻看乙姻温馨馨庄稼乙 RadekM鱈ka 12
- 13. Questions F#温稼糸油韓顎稼界岳庄看稼温鉛油沿姻看乙姻温馨馨庄稼乙 RadekM鱈ka 13
- 14. The End RadekM鱈ka radek@radekmika.cz