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Using a finally Block. After all, it's right there in the code:. reader.Close();. If the statement releases a resource that was acquired in a previous statement, then failing to execute this statement results in the resource being retained. A finally block occurs. As long as the program enters the try block associated with a finally block, the finally block will...
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In the next set of exercises, you will write your own code to access the database rather than dragging tables from the Data Sources window. The aim of the exercise is to help you learn more about ADO.NET and understand the object model implemented by ADO.NET by programming it manually. In many cases, this is what you will have to...
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from the the display logic for a Web application (you can actually write C# code and event handlers in the EmployeeForm.aspx file by using the Source View window, but this approach is not recommended).. Display the HTML code for EmployeeForm.aspx in the Source View window.. CodeFile="EmployeeForm.aspx.cs. This directive specifies the file containing the program code for the Web form and...
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In the following exercises, you will define and use a class that represents a binary tree.. This is a very practical exercise because this class happens to be one that is missing from the System.Collections.Generic namespace. A binary tree is a very useful data structure used for a variety of operations, including sorting and searching through data very quickly. A...
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Creating Web Applications with ASP.NET. A Web application that uses ASP.NET typically consists of one or more ASP.NET pages or Web forms, code files, and configuration files.. A Web form is held in an .aspx file, which is essentially an HTML file with some. Microsoft .NET–specific tags. An .aspx file defines the layout and appearance of a page.. Each .aspx...
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Return to the Design View window.. In the Layout menu, point to Position and click Auto-position Options. In the Options dialog box, expand the HTML Designer node of the tree view control if it is not already expanded and click CSS Positioning. In the right-hand pane of the dialog box, check “Change positioning to the following for controls added by...
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from the the display logic for a Web application (you can actually write C# code and event handlers in the EmployeeForm.aspx file by using the Source View window, but this approach is not recommended).. Display the HTML code for EmployeeForm.aspx in the Source View window.. CodeFile="EmployeeForm.aspx.cs. This directive specifies the file containing the program code for the Web form and...
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In the case of many events, this page will be the same as the one that issued the original request. However, the Web server also needs to know what other data the user has entered on the page so that when it generates the HTML response, it can preserve these values in the display. (If the Web server only sent...
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Sample page from NUMERICAL RECIPES IN C: THE ART OF SCIENTIFIC COMPUTING (ISBN Copyright (C by Cambridge University Press.Programs Copyright (C by Numerical Recipes Software. To order Numerical Recipes books,diskettes, or CDROMsvisit website http://www.nr.com or call North America only),or send email to [email protected] (outside North America).. Numerical Recipes in C. The Art of Scientific Computing Second Edition. Published by the...
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Sample page from NUMERICAL RECIPES IN C: THE ART OF SCIENTIFIC COMPUTING (ISBN Copyright (C by Cambridge University Press.Programs Copyright (C by Numerical Recipes Software. To order Numerical Recipes books,diskettes, or CDROMsvisit website http://www.nr.com or call North America only),or send email to [email protected] (outside North America).. Read this section if you want to use the programs in this book on...
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2.7 sprspm pattern multiply two sparse matrices 2.7 sprstm threshold multiply two sparse matrices 2.7 linbcg biconjugate gradient solution of sparse systems 2.7 snrm used by linbcg for vector norm. 2.7 atimes used by linbcg for sparse multiplication 2.7 asolve used by linbcg for preconditioner 2.8 vander solve Vandermonde systems 2.8 toeplz solve Toeplitz systems 2.9 choldc Cholesky decomposition 2.9...
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We do not claim that our advice is infallible! Rather, we are reacting against a tendency, in the textbook literature of computation, to discuss every possible method that has ever been invented, without ever offering a practical judgment on relative merit. We presume that you are able to read computer programs in C, that being the language of this version...
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Sample page from NUMERICAL RECIPES IN C: THE ART OF SCIENTIFIC COMPUTING (ISBN Copyright (C by Cambridge University Press.Programs Copyright (C by Numerical Recipes Software. Later editions of this book conform to the ANSI C standard.]. 1.1 Program Organization and Control Structures. A poem is meant to be read. In all three cases, the target of the communication, in its...
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Sample page from NUMERICAL RECIPES IN C: THE ART OF SCIENTIFIC COMPUTING (ISBN Copyright (C by Cambridge University Press.Programs Copyright (C by Numerical Recipes Software. Harbison, S.P., and Steele, G.L., Jr. Jones, R., and Stewart, I. 1981, Communications of the ACM , vol. 1984, Quarterly Journal of the Royal Astronomical Society , vol. Relative to other high-level programming languages, C...
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Although we assume no prior training of the reader in formal numerical analysis, we will need to presume a common understanding of a few key concepts. Computers store numbers not with infinite precision but rather in some approxi- mation that can be packed into a fixed number of bits (binary digits) or bytes (groups of 8 bits). Data types can...
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10.0 Introduction. (See Figure 10.0.1.) Finding a global extremum is, in general, a very difficult problem. Two standard heuristics are widely used: (i) find local extrema starting from widely varying starting values of the independent variables (perhaps chosen quasi-randomly, as in. 10.9) have demonstrated important successes on a variety of global extremization problems.. One particularly well-developed area of constrained optimization...
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Sample page from NUMERICAL RECIPES IN C: THE ART OF SCIENTIFIC COMPUTING (ISBN Copyright (C by Cambridge University Press.Programs Copyright (C by Numerical Recipes Software. Turn to § 10.6 for detailed discussion and implementation.. (ed.) 1977, The State of the Art in Numerical Analysis (London: Academic Press), Chapter III.1.. 10.1 Golden Section Search in One Dimension. One then evaluates the...
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and fill in the new point to be tried.. Note that we never need to evaluate the function. Output the best of the two current values.. 10.2 Parabolic Interpolation and Brent’s Method in One Dimension. But why assume the worst? If the function is nicely parabolic near to the minimum — surely the generic case for sufficiently smooth functions —...
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10.3 One-Dimensional Search with First Derivatives 405. The above conditions determine the acceptability of the parabolic fit. Here we take the golden section step into the larger of the two segments.. 10.3 One-Dimensional Search with First Derivatives. In principle, we might simply search for a zero of the derivative, ignoring the function value information, using a root finder like rtflsp...
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10.4 Downhill Simplex Method in Multidimensions. This section stands apart from those which follow, however: All of the algorithms after this section will make explicit use of a one-dimensional minimization algorithm as a part of their computational strategy. The downhill simplex method is due to Nelder and Mead [1. It is not very efficient in terms of the number of...