beginning c 2008 from novice to professional second edition pdf

... = conn.CreateCommand Trang 7'Specify that a stored procedure is to be executedcmd.CommandType = CommandType.StoredProcedurecmd.CommandText = "sp_DbException_2"Try'Open connectionconn.Open() ... released and a control has the focus MouseClick Occurs only when a control is being clicked by the mouse MouseDoubleClick Occurs when a control gets double-clicked by the mouse MouseDown Occurs when ... create procedure sp_DBException_2as set nocount oninsert into employees( employeeid,Firstname) 'Specify that a stored procedure is to be executedcmd.CommandType = CommandType.StoredProcedurecmd.CommandText

Ngày tải lên: 12/08/2014, 10:21

... discussion when I describe sort later in the chapter count The count method counts the occurrences of an element in a list: >>> ['to', 'be', 'or', 'not', 'to', 'be'].count('to') 2 Actually, ... a common data structure called a stack A stack like this works just like a stack of plates You can put plates on top, and you can remove plates from the top The last one you put into the stack ... digits—not integers. Trang 29The dict FunctionYou can use the dict function1 to construct dictionaries from other mappings (for example, other dictionaries) or from sequences of (key, value) pairs: >>>

Ngày tải lên: 12/08/2014, 10:21

... the concepts of object-oriented programming, you probably know about constructors Constructors will not be dealt with in this chapter; for a full discussion, see Chapter 9. The Magic of Objects ... mathematical def-inition of the factorial, which can be stated as follows: • The factorial of 1 is 1 • The factorial of a number n greater than 1 is the product of n and the factorial of n–1. As you can ... direct implementation of the definition Just remember that the function call factorial(n) is a different entity from the call factorial(n-1) Let’s consider another example Assume you want to calculate

Ngày tải lên: 12/08/2014, 10:21

... to follow some given protocol cer-So, to be a sequence, all you have to do is follow the sequence protocol. The Basic Sequence and Mapping Protocol Sequences and mappings are basically collections ... function, but most of them are called automatically by Python under certain circumstances (For example, init is called after object creation.) Constructors: These are common to many object-oriented ... How-To Guide for Descriptors (http://users.rcn.com/python/download/Descriptor.htm) Trang 12self-like parameter normally called cls You can call class methods directly on the class object too,

Ngày tải lên: 12/08/2014, 10:21

... matching fields • Create a dictionary to act as a scope for the template • Define a replacement function that does the following: • Grabs group 1 from the match and puts it in code • Tries to ... pstats) can be used for a more comprehensive analysis of the efficiency of a piece of code The trace module (and program) can give you a coverage analysis (that is, which parts of your code are executed ... of tools for creating and combining iterators (or other able objects) There are functions for chaining iterables, for creating iterators that return consecutive integers forever (similar to range,

Ngày tải lên: 12/08/2014, 10:21

... construct such protocol objects when a new connection arrives If you just want to create instances of a custom protocol class, you can use the factory that comes with Twisted, the Factory class in the ... LineReceiver Protocolfrom twisted.internet import reactor from twisted.internet.protocol import Factory from twisted.protocols.basic import LineReceiver class SimpleLogger(LineReceiver): def connectionMade(self): ... involved; you need to instantiate Factory and set its protocol attribute so it knows Trang 3which protocol to use when communicating with clients (that is, your custom protocol) Then you start

Ngày tải lên: 12/08/2014, 10:21

... several reasons One common problem that can occur is “second system syndrome.” This is the tendency to try to make the second version so clever or perfect that it’s never finished The “continual rewriting ... your project from scratch at any point, especially if you’ve invested some time and effort into the prototype It is probably better to refactor and modify that prototype into a more functional ... extension to Distutils can be used to create executable binaries from your Python programs Along with a couple of extra files (which can be LETTING THE WORLD KNOW You have a choice of many places to

Ngày tải lên: 12/08/2014, 10:21

... Controller Interface (client.py) from xmlrpclib import ServerProxy, Fault from cmd import Cmd from random import choice from string import lowercase from server import Node, UNHANDLED from threading ... Reference Simply put, you subclass Cmd to create a command-line inter-face, and implement a method called do_foo for each command foo you want it to be able to handle This method will receive ... blitting To blit (calling a surface object’s blit method) simply means to transfer the contents of one surface to another (The word blit is derived from the technical term block transfer, which is

Ngày tải lên: 12/08/2014, 10:21

... 343autoexec.bat file, 98, 216 automated tests, 351automatic checkerslimits to capabilities of, 361PyChecker/PyLint tools, 359–362, 364automatic refactoring tool (2to3), 599AWT (Abstract Window Toolkit), ... exception classes, 162, 163 catching exceptions, 163–170 catching all exceptions, 167, 169 catching exception object, 166 catching many exceptions in one block, 166 danger of catching all exceptions, ... 66 cat command, files, 265 catching exceptions, 163–170 catching all exceptions, 167, 169 catching exception object, 166 catching many exceptions in one block, 166 center method, strings, 586 CGI

Ngày tải lên: 12/08/2014, 10:21

... Default Description will affect the linked relation should apply collection-type The name of a UserCollectionType class describ-ing the collection type to be used in place of thedefaults for schema ... database view Trang 4The set CollectionA set collection allows collection attributes derived from the Set interface to be persisted In addition to the common collection mappings, the <set> ... these circumstances, there is very little difference between a one-to-one relationshipand a one-to-many relationship, except from a business perspective That is to say, we choosenot to associate

Ngày tải lên: 09/08/2014, 14:20

... 24The contextscript variable describes a SimpleScriptContextobject that lets a scriptengine access the script context The Rhino script engine needs to access the script con-text in order to implement ... into the default script context, you can send a script’s output to a GUI’s text component. To redirect a script’s output to the lower text component, RedirectScriptOutputToGUIcreates an instance ... extension, ScriptEngineFactory factory),public void registerEngineMimeType(Stringtype, ScriptEngineFactory factory), and public void registerEngineName(String name,ScriptEngineFactory factory)methods

Ngày tải lên: 09/08/2014, 14:21

... $total_cost = $cost + ($cost * 0.06); because the multiplication operator has higher precedence than the addition operator Operator Associativity The associativity characteristic of an operator ... significant characteristics of a programming language Both concepts are introduced in this section Table 3-4 contains a complete listing of all operators, ordered from highest to lowest precedence ... string operators (see Table 3-7) provide a convenient way in which to concatenate strings together There are two such operators, including the concatenation operator (.) and the concatenation

Ngày tải lên: 09/08/2014, 14:21

... service in order to exchange data with it—you simply use thedefined contract according to the explicitly defined boundary Policy-based compatibility: A service defines its communication policy ... how to do this in the next section Creating the Address Service Client To create a service client, you use the svcutil.exetool that comes with the Windows SDK or as part of the Orcas add-ons to ... application to talk to PHP, for example!Standards-based interoperability is a core design tenet of WCF Using WCF allows you toquickly build services that use the advanced Web Services protocols

Ngày tải lên: 12/08/2014, 09:20

... adegree of opacity relative to the specified value chan-Cursor Behavior To provide good feedback to your users, it is often necessary to change the mouse cursor to indicate the type of action that ... value specifying the radius of the circle that is used to round the cor-ner For example, to change the preceding rectangle to have rounded corners that areinscribed by a 10 pixel circle, you ... response to the event For example, you can use the syntax MouseLeftButton = "handleClick"to declare that you want to use the JavaScript function handleClickwhenthis element is clicked The

Ngày tải lên: 12/08/2014, 09:20

... Ajax-enabledJavaScript The JavaScript to perform the upload can be found within the functions.js file, and is a function called uploadimg This function is called when the submit button is clicked //functions.js ... you can use your FTP client, or if you have command-line access, you canuse the chmodcommand (chmod 777 /path/to/images) To write the uploaded image to the target folder, you use the function ... gallery-based applications currently on the Internet The last aspect I considered is how to improve upon commonplace photo gallerycode by using Ajax concepts There are definitely cases in which using Ajax

Ngày tải lên: 12/08/2014, 15:23

... what the column expects, and therefore can successfully update the column Here is the output as proof: SELECT CustomerFirstName, CustomerLastName,ClearedBalance, UnclearedBalance FROM CustomerDetails.CustomersWHERE ... will want to control the deletion BEGIN TRAN SELECT * FROM CustTemp DELETE TOP (3) CustTemp SELECT * FROM CustTempROLLBACK TRAN SELECT * FROM CustTemp 4 Execute the code, which should produce the ... lock would be placed on the customer transactions table by transaction 2 Transaction 1 could not proceed because of the lock by transaction 2, and transaction 2 could not proceed due to the lock

Ngày tải lên: 14/08/2014, 10:22

... start generating JavaScript, you can run into some nasty issues Common problems include too much white space from indenting, white space in thesource document, or white space in the stylesheet ... element contains an <xsl:value-of> element with the normalize-space function This function strips leading and trailing space characters and converts multiple white-space characters to a single ... an array called contentArray() The first element contains the name, while thesecond element contains the description The code can then write each part of the array sepa-rately to the document using

Ngày tải lên: 14/08/2014, 10:22

... Forms–based application by using Visual Studio. To create a Windows Forms–based application, you need to create a project of type Windows Application. To begin creating such a project, click File ➤ ... not accurate spine = 1.0423" 552 page count Books for professionals By professionals đ Beginning XML with C# 2008: From Novice to Professional Dear Reader, Modern software systems are becoming ... Novice to Professional cyan MaGenTa yelloW Black panTone 123 c Bipin Joshi Companion eBook Available THE APRESS ROADMAP Beginning XML with C# 2008 Beginning C# 2008 Illustrated C# 2008 Pro...

Ngày tải lên: 14/03/2014, 23:20

... specific connection object DbConnection conn = factory.CreateConnection(); // Set the connection string conn.ConnectionString = connectionString; // Create a database specific command object ... generic DbConnection reference: // Obtain a database specific connection object DbConnection conn = factory.CreateConnection(); So, in practice, the connection object will actually contain a SqlCommand ... <summary> /// Class contains generic data access functionality to be accessed from /// the business tier /// </summary> public static class GenericDataAccess { // static constructor static GenericDataAccess() ...

Ngày tải lên: 09/08/2014, 14:20

... you’ll want to create a separate file for each class, but because in this case DepartmentDetails is more like a tool for the CatalogAccess class, we chose to add it to CatalogAccess.cs. Add the ... p.ProductID, p.Name FROM ProductCategory pc INNER JOIN Product p ON p.ProductID = pc.ProductID WHERE pc.CategoryID = 5 Showing Products Page by Page In case certain web sections need to list ... BalloonShopConfiguration class and add two fields, whose values are loaded once by the static constructor of the class: public static class BalloonShopConfiguration { // Caches the connection string ...

Ngày tải lên: 09/08/2014, 14:20