how to create barcode in vb.net 2012 Custom Code Generation in C#

Encoder PDF417 in C# Custom Code Generation

Custom Code Generation
Make PDF417 In Visual C#
Using Barcode printer for Visual Studio .NET Control to generate, create PDF417 image in Visual Studio .NET applications.
www.OnBarcode.com
PDF 417 Decoder In C#
Using Barcode reader for VS .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
It s sometimes necessary for a class to have the best performance possible. For some algorithms, it s easy to write a general solution to a problem, but the overhead of the general solution may be undesirable. A custom solution to the problem may be possible but can t be generated ahead of time because the particulars of the problem aren t known until the runtime. In such situations, it may be useful to generate the custom solution at execution time. This technique is often known as self-modifying code.
Matrix Barcode Creator In Visual C#.NET
Using Barcode generator for Visual Studio .NET Control to generate, create Matrix 2D Barcode image in .NET framework applications.
www.OnBarcode.com
PDF 417 Creation In Visual C#
Using Barcode creator for VS .NET Control to generate, create PDF 417 image in .NET applications.
www.OnBarcode.com
Polynomial Evaluation
Create Code 128 In Visual C#.NET
Using Barcode creator for Visual Studio .NET Control to generate, create USS Code 128 image in .NET applications.
www.OnBarcode.com
Barcode Creator In Visual C#
Using Barcode drawer for VS .NET Control to generate, create Barcode image in .NET framework applications.
www.OnBarcode.com
This section implements a polynomial evaluator for polynomials in the following form: Y = anxn + + a2x2 + a1x + a0 To get rid of the exponentiation operation, which is slow, you can nicely rearrange the equation into this: Y = a0 + x (a1 + x (a2 + x (an) ) )
Draw Barcode In Visual C#
Using Barcode generation for VS .NET Control to generate, create Barcode image in .NET framework applications.
www.OnBarcode.com
Intelligent Mail Printer In C#.NET
Using Barcode creation for VS .NET Control to generate, create USPS OneCode Solution Barcode image in .NET applications.
www.OnBarcode.com
CHAPTER 32 EXECUTION-TIME CODE GENERATION
Create PDF 417 In None
Using Barcode printer for Software Control to generate, create PDF-417 2d barcode image in Software applications.
www.OnBarcode.com
PDF-417 2d Barcode Generation In Visual Studio .NET
Using Barcode creator for Reporting Service Control to generate, create PDF 417 image in Reporting Service applications.
www.OnBarcode.com
The first step in this exercise is to write the simple general solution to the problem. Since several solutions will exist, it will take a few files to build up a framework. The first is a utility class to do timing: using System; namespace Polynomial { class Counter { public static long Frequency { get { long freq = 0; QueryPerformanceFrequency(ref freq); return freq; } } public static long Value { get { long count = 0; QueryPerformanceCounter(ref count); return count; } } [System.Runtime.InteropServices.DllImport("KERNEL32")] private static extern bool QueryPerformanceCounter( ref long lpPerformanceCount); [System.Runtime.InteropServices.DllImport("KERNEL32")] private static extern bool QueryPerformanceFrequency( ref long lpFrequency); } } The Counter class encapsulates the Win32 performance counter functions and can be used to get accurate timings. .NET 2.0 introduces a new class called Stopwatch that wraps the functionality of the Win32 performance counter. If an application requires precise time functionality, and it doesn t require support for older framework versions, you should use Stopwatch over the Counter class. Next, add a helper class to hold the information about Polynomial:
PDF 417 Maker In Visual Basic .NET
Using Barcode generator for Visual Studio .NET Control to generate, create PDF 417 image in Visual Studio .NET applications.
www.OnBarcode.com
PDF417 Generator In Java
Using Barcode drawer for Android Control to generate, create PDF417 image in Android applications.
www.OnBarcode.com
CHAPTER 32 EXECUTION-TIME CODE GENERATION
Making Barcode In Visual Basic .NET
Using Barcode creator for .NET Control to generate, create Barcode image in VS .NET applications.
www.OnBarcode.com
UPC A Scanner In Visual Basic .NET
Using Barcode reader for VS .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
namespace Polynomial { using System; using PolyInterface; /// <summary> /// The abstract class all implementations inherit from /// </summary> public abstract class Polynomial { public Polynomial(params double[] coefficients) { this.coefficients = new double[coefficients.Length]; for (int i = 0; i < coefficients.Length; i++) this.coefficients[i] = coefficients[i]; } public abstract double Evaluate(double value); public abstract IPolynomial GetEvaluate(); protected double[] coefficients = null; } } The Polynomial class is an abstract class that holds the polynomial coefficients. A small interface defines the evaluation function: namespace PolyInterface { /// <summary> /// The interface that implementations will implement /// </summary> public interface IPolynomial { double Evaluate(double value); } } The following class implements the general method of evaluation: namespace Polynomial { using System; /// <summary> /// The simplest polynomial implementation /// </summary> /// <description> /// This implementation loops through the coefficients and evaluates each
EAN / UCC - 13 Creation In Visual Studio .NET
Using Barcode creator for ASP.NET Control to generate, create GS1 128 image in ASP.NET applications.
www.OnBarcode.com
2D Creator In Visual Studio .NET
Using Barcode maker for Visual Studio .NET Control to generate, create Matrix 2D Barcode image in .NET framework applications.
www.OnBarcode.com
CHAPTER 32 EXECUTION-TIME CODE GENERATION
Decoding PDF-417 2d Barcode In Visual Studio .NET
Using Barcode reader for .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
Barcode Reader In .NET
Using Barcode reader for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
/// term of the polynomial. /// </description> class PolySimple: Polynomial { public PolySimple(params double[] coefficients): base(coefficients) { } public override IPolynomial GetEvaluate() { return((IPolynomial) this); } public override double Evaluate(double value) { double retval = coefficients[0]; double f = value; for (int i = 1; i < coefficients.Length; i++) { retval += coefficients[i] * f; f *= value; } return(retval); } } } This is a simple evaluator that merely walks through the polynomial term by term, accumulates the values, and returns the result. Finally, the driver ties it all together: namespace Polynomial { using System; using System.Diagnostics; /// <summary> /// Driver class for the project /// </summary> public class Driver { /// <summary> /// Times the evaluation of a polynomial /// </summary> /// <param name="p">The polynomial to evaluate</param>
QR Code JIS X 0510 Generation In None
Using Barcode printer for Microsoft Excel Control to generate, create Quick Response Code image in Office Excel applications.
www.OnBarcode.com
Barcode Maker In Objective-C
Using Barcode creation for iPhone Control to generate, create Barcode image in iPhone applications.
www.OnBarcode.com
CHAPTER 32 EXECUTION-TIME CODE GENERATION
public static double TimeEvaluate(Polynomial p) { double value = 2.0; Console.WriteLine("{0}", p.GetType().Name); // Time the first iteration. This one is done // separately so that we can figure out the startup // overhead separately... long start = Stopwatch.GetTimeStamp(); IPolynomial iPoly = p.GetEvaluate(); long delta = Stopwatch.GetTimeStamp() -start; Console.WriteLine("Overhead = {0:f2} seconds", (double) delta/ Stopwatch.Frequency); Console.WriteLine("Eval({0}) = {1}", value, iPoly.Evaluate(value)); int limit = 100000; Stopwatch timer = Stopwatch.StartNew(); // Evaluate the polynomial the required number of // times. double result = 0; for (int i = 0; i < limit; i++) { result += iPoly.Evaluate(value); } timer.Stop(); double ips = (double)limit / (double)timer.ElapsedMilliseconds / 1000D; Console.WriteLine("Evalutions/Second = {0:f0}", ips); Console.WriteLine(); return(ips); } /// <summary> /// Run all implementations for a given set of coefficients /// </summary> /// <param name="coeff"> </param> public static void Eval(double[] coeff) { Polynomial[] imps = new Polynomial [] { new PolySimple(coeff), };
Copyright © OnBarcode.com . All rights reserved.