Foundations of F# Net phần 6 pps

... INTERFACES 1 76 7575Ch08.qxp 4/27/07 1:04 PM Page 1 76 #light printfn "(sqrt 16. 0): %f" (sqrt 16. 0) printfn "(log 160 .0): %f" (log 160 .0) printfn "(cos 1 .6) : %f" (cos 1 .6) T he ... most useful. The Microsoft.FSharp.Math Namespace The Microsoft.FSharp.Math namespace is designed to enable F# to ensure that the F# libraries include definitions of som...

Ngày tải lên: 05/08/2014, 10:21

... results of this example, when compiled and executed, are as follows: Enter day of the month on which you were born: 23 Enter number of the month you were born: 5 Enter last two digits of the year of ... keywor d. When trying to match an F# exception, the syntax follows that of tr ying to match an F# constr uctor fr om a union type . The first half of the rule consists of t...

Ngày tải lên: 05/08/2014, 10:21

... another nice feature of F# when interoperating with non -F# libraries. .NET APIs often use a .NET construct called delegates, which are concep- tually a kind of function value. F# functions will ... System.DateTime.Now.DayOfWeek = System.DayOfWeek.Sunday then print_endline "Sunday Playlist: Lazy On A Sunday Afternoon - Queen" CHAPTER 4 ■ IMPERATIVE PROGRAMMING 66 7575C...

Ngày tải lên: 05/08/2014, 10:21

... 213 Normalize - 2 Replace - 2 IndexOfAny - 3 EndsWith - 3 Equals - 3 StartsWith - 3 LastIndexOfAny - 3 Split - 6 LastIndexOf - 9 IndexOf - 9 Using LINQ to XML The goal of LINQ to XML is to provide ... Data grid containing the results of a DLINQ query Summary This chapter has looked at the options for data access in F#. It has shown that the combination of F# with .NET libraries is...

Ngày tải lên: 05/08/2014, 10:21

... Don Syme Foundations of F# BOOks fOR PROfessIOnals By PROfessIOnals ® Foundations of F# Dear Reader, I wrote this book because I believe functional programming (FP) is the future of .NET programming. ... elements that the professional programmer needs to master in order to get started with F# and .NET. As the designer of F#, I am thrilled to see Robert take up the challe...

Ngày tải lên: 05/08/2014, 10:21

... the implementation of any other interfaces after the first interface or class must come after the definitions of all the methods of the first inter- face or class. The name of the interface is ... prop.MyProp print prop.MyProp print prop.MyProp The results of the previous example, when compiled and executed, are as follows: 2137491492 7 265 98452 3347 466 91 It is also possible to d...

Ngày tải lên: 05/08/2014, 10:21

... results of this code, when compiled and executed, are as follows: 1 1 1 1 1 1 1 1 1 1 [-214748 364 8; -214748 364 7; -214748 364 6; -214748 364 5; -214748 364 4; -214748 364 3; -214748 364 2; -214748 364 1; -214748 364 0; ... 3|] #else CHAPTER 6 ■ ORGANIZING, ANNOTATING, AND QUOTING CODE 119 7575Ch 06. qxp 4/27/07 1:11 PM Page 119 The Microsoft.FSharp.Reflection Module This module contai...

Ngày tải lên: 05/08/2014, 10:21

... the NetFx3 WPF site ( http://wpf.netfx3.com) and of course the WPF section of MSDN ( http://msdn2.microsoft.com/en-us/netframework/aa 663 3 26. aspx). Summary This chapter provided an overview of ... with F#. Because of the scope of this topic, I didn’t cover all the options for user interface programming in F#. For example, there are hundreds of third-party components, built o...

Ngày tải lên: 05/08/2014, 10:21

... tree: type Expr = | Ident of string | Val of System.Double | Multi of Expr * Expr | Div of Expr * Expr | Plus of Expr * Expr | Minus of Expr * Expr The tree consists of just one type because it ... ignore The results of this example, when executed (on the day of this writing), are as follows: 0. <b> ;F#& lt;/b> http://research.microsoft.com/fsharp/fsharp.aspx A .NET...

Ngày tải lên: 05/08/2014, 10:21

... 1,000,000 Interpreted 6, 890 6, 979 6, 932 7 ,60 8 14,835 84,823 799,788 Compiled via 8 ,65 8 56 854 1,007 2, 369 15,871 151 ,60 2 delegate Compiled 1,112 1,409 2, 463 16, 895 151,135 1,500,437 14, 869 ,69 2 F r om T able ... q.Continuous1); break; } } The results of this example, when compiled and executed, are as follows: Discrete value: 65 6 76 If you prefer, the compiled form o...

Ngày tải lên: 05/08/2014, 10:21