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The Latest

DevX - Software Development Resource

Objects and Sockets

Question: Is it possible to send an object over a socket connection in Java? Answer: Objects can be transmitted over a socket connection in the same way that they are

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Delegation Technique

Question: What is delegation and how can I use it? Could you please give an example of a simple delegation technique? Answer: Delegation is a technique where one object directly

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JavaScript Variable Declaration

Question: I am new to JavaScript, but familiar with a variety of other languages. I don’t quite understand what the following variable declarations do: ns4 = (document.layers)? true:falseie4 = (document.all)?

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Using JavaScript to Find User Info.

Question: I’m working for a local newspaper, and we are writing a survey to see the type of technology our viewers are currently using to access the site. Is there

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Viewing Source Code

Question: Is there a way to prevent users from using the VIEW/SOURCE to view the HTML in my pages? I need to have this for a form that uses sensitive

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Scroll() Function

Question: In the current Web project I have been working on, I have some links on my page which execute a JavaScript function. With this JavaScript function, I open up

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File Deletion

Question: I’m opening a file for reading, and after reading its contents I write it all to other file. Now I want to delete the original file. How do I

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Layers Move when Window Resizes Netscape

Question: Is there code to reload a whole page when it is resized? The page with the layers is nested in a frame which is opened in other page. When

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Blobs and Java

Question: How can I get out the value of a blob to print out on a web page using Java? I am using a cursor to get out all the

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Case Sensitivity

Question: Is Java platform-dependent where the case sensitivity of filenames is concerned? In Unix, filenames are case sensitive whereas in Windows they are not. How does it work when Java

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Threads and JDBC Connections

Question: Is the JDBC Connection class thread safe? In other words, can a connection be shared between multiple threads without using synchronization? Answer: java.sql.Connection is actually an interface and not

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Determing Empty Tables or Queries in MS Access

You can determine whether an Access table or query, accessed via RECORDSET OBJECT, contains any record by examining the boolean type BOFand EOF propertyof that RECORDSET OBJECT. If the RECORDSET

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Data Exchange

Question: Can we exchange data between Visual Basic and Microsoft Project? If so, what is the object model for Microsoft Project? Answer: The MS Project object model is as large

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Editing an Executable File

Question: I have an existing .exe file that creates files, archives, and restores. I need to find out how to edit that existing program so as to update some changes.

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Converting VBScript to JavaScript

Question: I need to convert this fairly simple VBScript to a JavaScript? The purpose of the script is to cause a posted seminar event to disappear after the date of

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Signals and Public Slots Blocks

Question: Everybody knows the meaning of public, private, and protected blocks in a class interface. While browsing through a KDE program I found two other block types: signals and public

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Correct Reference Library for FileSystemObject

Question: I am having problems calling the FileSytemObject from VB6. “Dim x as New FileSystemObject” does not work. I have tried the Active Server Pages Obj lib and ADO 2.0

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Variable Creation and Scope

Question: In writing a basic introductory module about C++, I came upon the topic of “instant variable creation” within for loops and noticed to my dismay that the following code

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DevX Special Report: The AJAX Framework Roundup

Which AJAX Library Is Right for Me? 12/05/06 Free AJAX libraries are multiplying like bunnies in the spring. Here’s some guidance to help you sift through the dozens of options

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DevX Special Report: Judging Java

DevX is pleased to conclude its special enterprise report on Java. Part III of our series includes a candid two-part feature by analyst and author Andrew Binstock on the increasing

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DevX Special Report: The Road to Ruby

The Road to Ruby Does the Ruby programming language offer enough power and elegance to make it a legitimate alternative to the current heavyweight languages? Many Ruby converts believe so,