... in order. Now we can use another function called traverse(), which operates on this data structure and lets us specify what function to call for each piece of information it contains. Keeping ... module with Perl. You can get Tk from any CPAN archive (http://www.perl.com/CPAN/). The Tk extension provides an easy way to draw a window, put widgets into it (such as buttons, check boxes, ... a few examples of Tk-based web clients, which go beyond the command-line interface that we've been using so far in this book:[1] xword, a dictionary client track, a graphical version...
... "CHINA", "COLOMBIA", "CONGO", "COOK ISLANDS", "COSTA RICA", "COTE D'IVOIRE", "CROATIA", "CYPRUS", "CZECH ... REPUBLIC", "DENMARK", Chapter 7: Graphical Exampleswith Perl/Tk- P2 The do_search( ) function will take an optional $url argument, to give it an alternative place to connect ... clean up, and then we can do our lookup. If we care about this $tag, then we compress all spaces in the current text string (makes the display a little bit nicer) and call the function specified...
... Package tracking client Chapter 7: Graphical Exampleswith Perl/Tk- P3 Our destinations list is an almost exact copy of the list you'd see on the web page. For ease in using, we placed ... 'top_left_arrow'); -yscrollcommand => ['set', $scroll], -exportselection => 0); $scroll->configure(-command => ['yview', $listbox]); $scroll->pack(-side => ... typed a letter, it would scroll to the first entry starting with that letter. Or you could put an additional entry, and search for any word starting with those characters: my $response_f =...
... selected. my $site = ""; my ($content, @down); my @selected = $list->curselection; $mw->configure(-cursor => 'watch'); $mw->idletasks; foreach $index ... actually ping each site. The code to check a site's status is as follows, where $site is a string containing a standard URL (like http://www.ora.com): $content = head($site); if ($content) ... $history_label->configure(-background => $old_color); } } The function ping_site( ) is called when a new site is added to update its status. It is also called when in automode. It checks the...
... o. A car has a current speed and has a certain amount of fuel inside it.Speci c behaviour can also be associated with each object (things that you can do with it) :- a watch can be checked ... source code to execute on a particular machine…• compilation into machine-language object code• direct execution of source code by ‘interpreter’ program• compilation into intermediate object ... while allowing current parts of the system to interact with new object without concern for the speci c properties of the new objects. 1.5 What Exactly is Object Oriented Programming? Activity 8...
... viện ph c vụ cho vi c xây dựng cc ứng dụng web, cc dịch vụ web và cc ứng dụng Windows; c n c CLR - Common Language Runtime: (ngôn ngữ th c thi dùng chung) để th c thi cc đối tượng đư c xây ... lớp g c System.Object. Ngoài ra .Net c n bao gồm Common Language Specification - CLS (đ c tả ngôn ngữ chung). Nó cung c p cc qui t c cơ bản mà ngôn ngữ muốn tích hợp phải thỏa mãn. CLS chỉ ... Data. Cc vùng tên này chứa cc lớp thu c về tầng c a mình. Một vùng tên chứa cc lớp và cc vùng tên con kh c. Vậy trong ví dụ trên ta sẽ tạo một vùng tên chung cho ứng dụng là MyApplication...
... tập tin nguồn (.cs) và cc tập tin th c thi. C ng như giữ cc tập tin nguồnchúng ta c ng c n thiết phải giữ cc tập tin kh c như là cc tài nguyên bên ngoài cc icon,image, form Chúng ta sẽ lưu ... th c thành viên c a lớp.Phương th c chính là cc hàm đư c định nghĩa trong lớp. Do đó, ta c n c thể gọi c c phương th c thành viên là cc hàm thành viên trong một lớp. Cc phương th c này chỉ ... C# c thể chạy trên bất c máy nào?Trả lời 1: Không phải tất c . Một chương trình C# chỉ chạy trên máy c Common LanguageRuntime (CLR) đư c cài đặt. Nếu chúng ta copy một chương trình exe c a...
... are associated with the namespaces Compilers .C and Compilers.Csharp,respectively:namespace Compilers .C {class Lexer { }class Parser { }}namespace Compilers.Csharp {class Lexer { }class ... one for C (Compilers .C) and anotherfor C# (Compilers.Csharp), can own (and access) different classes with the same name.Therefore, Lexer and Parser for the C compiler are accessed without ambiguity ... System.Collections; // To access ArrayList class.23 namespace Co {4 namespace System {5 namespace Collections {6 public class OurList { /* */ }7 // 8}9}10 namespace Project {11 public class...
... services development with ASP.NET and WSE 3.0Service-Oriented Architecture in C# 2005CompanioneBookAvailableExpertAbout the Technical Reviewers■MATHEW UPCHURCH is a technical consultant with ... illustrates an architecture in which two separate Web services access the sameback-end business components. Each Web service provides a distinct service interface, eachof which is suitable for ... Extended Web Services Security with WS-Security and WS-Secure Conversation:This chapter reviews how WSE 3.0 can secure other common Web service deploymentscenarios. This chapter covers the following:•...
... of the chapters is as follows:Chapter 1, “Introducing Service-Oriented Architecture”: This chapterintroduces the concepts behind service-oriented architecture, and thecharacteristics of a ... Serviceshttp://msdn.microsoft.com/webservices/building/wse/default.aspx?pull=/library/en-us/dnwebsrv/html/programwse2.aspWS-SecurityStandards Documents: Web Services Security (WS-Security)OASIS Web Services Security StandardsSpecifications (March 2004)Located at OASIS Web Services Security TChttp://www.oasis-open.org/committees/tc_home.php?wg_abbrev=wssSpecifications: ... TChttp://www.oasis-open.org/committees/tc_home.php?wg_abbrev=wssSpecifications: SOAP Message Security 1.0OASIS Web Services Security StandardsSpecifications (March 2004)Located at OASIS Web Services Security TChttp://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-message-security-1.0.pdf3901app_final.qxd...
... c) The code will compile successfully but does not display any output. b) The code will complie successfully and output of code will be: AMERICA d) The code will compile successfully ... Static b) Abstract d) Private 104. Which of the following are correct statements for implementing an abstract class. [1.0] a) public abstract void class ClassA c) abstract public ClassA ... block is used without a catch block b) We cannot have a try block without a catch or/and finally block. 178. When we want to associate a key with values which of the following classes...