.net data matrix barcode Designing Vanilla .NET Libraries in VB.NET

Encoding Data Matrix in VB.NET Designing Vanilla .NET Libraries

Designing Vanilla .NET Libraries
Data Matrix ECC200 Generation In VB.NET
Using Barcode maker for VS .NET Control to generate, create ECC200 image in .NET framework applications.
www.OnBarcode.com
DataMatrix Scanner In VB.NET
Using Barcode recognizer for .NET framework Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
One way to approach library design with F# is to design libraries according to the .NET Library Design Guidelines. This implicitly can mean avoiding or minimizing the use of F#-specific or F#-related constructs in the public API. We call these libraries vanilla .NET libraries, as opposed to libraries that use F# constructs without restriction and are mostly intended for use by F# applications. Designing vanilla .NET libraries means adopting the following rules: Apply the .NET Library Design Guidelines to the public API of your code. Your internal implementation can use any techniques you want. Restrict the constructs you use in your public APIs to those that are most easily used and recognized by .NET programmers. This means avoiding the use of some F# idioms in the public API. Use the Microsoft FxCop quality-assurance tool to check the public interface of your assembly for compliance. Use FxCop exemptions where you deem necessary. Avoid using F# list types 'T list in vanilla .NET APIs. Use seq<'T> or arrays instead of lists.
EAN128 Encoder In VB.NET
Using Barcode drawer for Visual Studio .NET Control to generate, create EAN / UCC - 13 image in VS .NET applications.
www.OnBarcode.com
Printing Code 128C In Visual Basic .NET
Using Barcode printer for Visual Studio .NET Control to generate, create ANSI/AIM Code 128 image in .NET applications.
www.OnBarcode.com
At the time of writing, here are some specific recommendations from the authors of this book:
Barcode Creation In Visual Basic .NET
Using Barcode encoder for .NET Control to generate, create Barcode image in Visual Studio .NET applications.
www.OnBarcode.com
UPCA Encoder In Visual Basic .NET
Using Barcode drawer for VS .NET Control to generate, create UPC-A Supplement 5 image in VS .NET applications.
www.OnBarcode.com
CHAPTER 19 DESIGNING F# LIBRARIES
Linear Generation In VB.NET
Using Barcode encoder for Visual Studio .NET Control to generate, create 1D image in VS .NET applications.
www.OnBarcode.com
British Royal Mail 4-State Customer Code Encoder In Visual Basic .NET
Using Barcode drawer for Visual Studio .NET Control to generate, create RM4SCC image in Visual Studio .NET applications.
www.OnBarcode.com
Avoid using F# function types in vanilla .NET APIs. F# function values tend to be a little difficult to create from other .NET languages. Instead, consider using .NET delegate types such as the overloaded System.Func<...> types available from .NET 3.5 onward. Avoid using F#-specific language constructs such as discriminated unions and optional arguments in vanilla .NET APIs.
DataMatrix Creation In None
Using Barcode generation for Microsoft Word Control to generate, create Data Matrix 2d barcode image in Office Word applications.
www.OnBarcode.com
Drawing Data Matrix 2d Barcode In None
Using Barcode generation for Office Excel Control to generate, create DataMatrix image in Excel applications.
www.OnBarcode.com
For example, consider the code in Listing 19-1, which shows some F# code that you intend to adjust to be suitable for use as part of a .NET API. Listing 19-1. An F# Type Prior to Adjustment for Use as Part of a Vanilla .NET API namespace global open System type APoint(angle,radius) = member x.Angle = angle member x.Radius = radius member x.Stretch(l) = APoint(angle=x.Angle, radius=x.Radius * l) member x.Warp(f) = APoint(angle=f(x.Angle), radius=x.Radius) static member Circle(n) = [ for i in 1..n -> APoint(angle=2.0*Math.PI/float(n), radius=1.0) ] new() = APoint(angle=0.0, radius=0.0) The inferred F# type of this class is as follows: type APoint = new : unit -> APoint new : angle:double * radius:double -> APoint static member Circle : n:int -> APoint list member Stretch : l:double -> APoint member Warp : f:(double -> double) -> APoint member Angle : double member Radius : double Let s look at how this F# type appears to a programmer using C# or another .NET library. The approximate C# signature is as follows: // C# signature for the unadjusted APoint class of Listing 19-1 public class APoint { public APoint(); public APoint(double angle, double radius); public static Microsoft.FSharp.Collections.List<APoint> Circle(int count); public APoint Stretch(double factor); public APoint Warp(Microsoft.FSharp.Core.FastFunc<double,double> transform); public double Angle { get; } public double Radius { get; } }
Reading EAN-13 In Visual Studio .NET
Using Barcode scanner for .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
Create GS1 - 13 In .NET
Using Barcode creation for VS .NET Control to generate, create GTIN - 13 image in .NET applications.
www.OnBarcode.com
CHAPTER 19 DESIGNING F# LIBRARIES
Data Matrix 2d Barcode Scanner In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
UPC-A Supplement 2 Generation In Objective-C
Using Barcode generator for iPhone Control to generate, create GTIN - 12 image in iPhone applications.
www.OnBarcode.com
There are some important points to notice about how F# has chosen to represent constructs here. For example: Metadata such as argument names has been preserved. F# methods that take tupled arguments become C# methods that take multiple arguments. Functions and lists become references to corresponding types in the F# library.
Draw Data Matrix 2d Barcode In VS .NET
Using Barcode generator for .NET framework Control to generate, create Data Matrix image in .NET framework applications.
www.OnBarcode.com
Barcode Encoder In Java
Using Barcode drawer for Java Control to generate, create Barcode image in Java applications.
www.OnBarcode.com
The full rules for how F# types, modules, and members are represented in the.NET Common Intermediary Language are explained in the F# language reference on the F# web site. To make a .NET component, you place it in a file component.fs and compile this code into a strongname signed DLL using the techniques from 7: C:\fsharp> sn -k component.snk C:\fsharp> fsc --target:library --keyfile:component.snk
Decode PDF-417 2d Barcode In VB.NET
Using Barcode decoder for .NET framework Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
Recognize QR Code In VB.NET
Using Barcode scanner for .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
component.fs
Code 3/9 Generator In None
Using Barcode encoder for Office Excel Control to generate, create Code 39 Extended image in Excel applications.
www.OnBarcode.com
Creating Barcode In Java
Using Barcode generator for BIRT reports Control to generate, create Barcode image in BIRT applications.
www.OnBarcode.com
Figure 19-1 shows the results of applying the Microsoft FxCop tool to check this assembly for compliance with the .NET Framework Design Guidelines. This reveals a number of problems with the assembly. For example, the .NET Framework Design Guidelines require the following: Types must be placed in namespaces. Public identifiers must be spelled correctly. Additional attributes must be added to assemblies related to .NET Security and Common Language Specification (CLS) compliance.
Figure 19-1. Running FxCop on the code from Listing 19-1
Copyright © OnBarcode.com . All rights reserved.