Microsoft Access is a class-based language. Although you can create classes, Access VBA is not fully OOP. You can create classes, but not inherit from them. It is a traditional language with a few OOP extensions. You code in a traditional approach using functions, procedures, and global data, and you can make use of simple classes to help organize your reusable code. Microsoft Access is most suitable for creating business desktop applications that run within Microsoft Access for Windows.

Microsoft's official Access home page.

UML is a modeling language for specifying, visualizing, constructing, and documenting the artifacts of a system-intensive process. This guide introduces you to the 9 standard diagrams in the UML 1.4 specification. These diagrams can be divided into two groups: Structural diagrams, which model the organization of the solution, and Behavioral diagrams, which model the functionality of the solution.

Language Overview: Class-based language. Although you can create classes, ASP is not fully OOP. It is a traditional language with a few OOP extensions. You code in a traditional approach using functions, procedures, and global data, and you can make use of simple classes to help organize your reusable code.

Target Platforms: ASP Classic is most suitable for creating websites targeting any browser (IIS Web Server with ASP Classic installed or equivalent).

What is the syntax in ASP Classic for using an associative array?

Use a dictionary:

Dim StateList

set StateList = Server.CreateObject("Scripting.Dictionary")
 

StateList.Add "CA", "California"

Response.Write "NV is " & StateList("NV")

For more examples, refer to our ASP Classic Associative Array (Scripting.Dictionary) article.

C# supports abstract class members and abstract classes using the abstract modifier. An abstract class is a class with one or more abstract members and you cannot instantiate an abstract class. However, you can have additional implemented methods and properties. An abstract member is either a method (implicitly virtual), property, indexer, or event in an abstract class. You can add abstract members ONLY to abstract classes using the abstract keyword.

This code shows how to ask the webserver where the site's root directory is, and how to convert a relative path (like /Uploads) to the full filesystem path.  This will work across environments (i.e. Development/QA/Production).

string ServerPath2 = Server.MapPath(@"~/");

This gives the full path to the webserver's root directory. 

Example:

"C:\\Documents and Settings\\All Users\\Documents\\Visual Studio 2008\\WebSites\\MySite\\"

string ServerPath2 = Server.MapPath(@"~/Uploads");

This gives the full path to the Uploads subdirectory - even if it is a virtual directory in another location! 

...even if it is not a browsable web directory (such as APP_CODE or APP_DATA).

In C#, you specify each class and each class member's visibility with an access modifier. The C# access modifiers are the traditional public, protected, and private plus the two additional .Net modifiers internal and protected internal.

Internal indicates members are accessible from types in the same assembly. Protected internal indicates members are accessible from types in the same assembly as well as descendant classes. OO purist might object to internal and protected internal and I suggest you choose private, protected, or public over them until you both fully understand them and have a need that is best suited by them.

The default for class and class members is Internal (members are accessible from types in the same assembly). This is different than with interfaces where the default for an interface is Internal but an interface's members are always public -- which makes sense but is noteworthy.

With both classes and interfaces, if you make a class public, the members are public. This applies to the other access modifiers too. For example, if you make a class protected, the members default access modifiers are protected.

public class Cyborg

{

private String FName;

}

Microsoft portal site for the ASP.NET development community.

Can I use a Win32 DLL in my Visual Studio.Net application?

Yes. The trick is to use the [DllImport] attribute, followed by declarations for each of the DLL's functions and procedures.

Language Overview: C++ is a hybrid traditional C and OOP language. You code either in a traditional approach using functions, procedures, and global data, or you code using an OOP approach, or a mixture of both.

Target Platforms: C++ is suitable for creating any type of native code applications for many different platforms. The focus of this information is on creating native code Win32 applications that run on Microsoft Windows.

Lots here!  C++Builder TV is part of CodeGear's developer network. Contains both audios and videos.

Yes, you can build .Net runtime applications with Microsoft's Visual C++ as well as building native code Win32 applications and rich 2D and 3D games with The Game Creators SDK. You can use it to create other types of applications too including MFC and Smart Devices applications.

Q. I've updated my BDE from version 5.01 to version 5.2.0.2 but the About BDE Administrator dialog still shows version 5.01?

A. Your update may have taken. Updates typically just replace the DLLs the BDE uses so you may have the latest installed.

Version Information
To see what version of the BDE engine you "actually" have installed, you need to look at the Version Information from within the BDE Administrator. Select Object | Version Information... to see the DLL version numbers

by Jeffrey K. Tyzzer. In 1970, Dr. E.F. Codd's seminal paper "A Relational Model for Large Shared Databanks" was published in Communications of the ACM. This paper introduced the topic of data normalization, so-named because, at the time, President Nixon was normalizing relations with China.

Data normalization is a technique used during logical data modeling to ensure that there is only one way to know a fact, by removing all structures that provide more than one way to know the same fact as represented in a database relation (table). The goal of normalization is to control and eliminate redundancy, and mitigate the effects of modification anomalies -- which are generally insertion and deletion anomalies. (Insertion anomalies occur when the storage of information about one attribute requires additional information about a second attribute. Deletion anomalies occur when the deletion of one fact results in the loss of a second fact).

Normalization
There are six generally recognized normal forms of a relation: first normal form, second normal form, third normal form, Boyce/Codd normal form, fourth normal form, and fifth normal form, also called projection/join normal form. Other normal forms (e.g., Domain/Key) exist but will not be discussed here. The normal forms are hierarchical, i.e., each normal form builds upon its predecessor. Although many people consider a relation to be normalized only when it is in third normal form, technically speaking, a relation in only first normal form can be considered...

Lots here!  Interbase TV is part of CodeGear's developer network. Contains both audios and videos.

A Char field is a text field of a specific length. For example, a Char(50) field takes up 50 characters of storage in most databases even if you only store 1 character in it., or even none. 

A VarChar field is a text field of variable length. For example, a VarChar(50) field can be up to 50 characters but if less is stored, the length of the field is somewhat less than 50. If you only store 1 character in a VarChar, then generally only 1 character of space is taken up in storage.

The "N" in NChar and NVarChar stands for National character which means you can store unicode text. NChar and NVarChar take up twice as much storage space.

Language Overview: Delphi programming language is a type-safe language consisting of hybrid traditional Pascal and OOP features. You code either in a traditional approach using functions, procedures, and global data, or you code using an OOP approach, or a mixture of both.

Target Platforms: Delphi for Win32 is most suitable for creating native code Win32 applications that run on Microsoft Windows.

Bob Swart, affectionately known by some of us as "Dr. Bob," has long been a great resource for details about Delphi development.

I'll never forget how, when I first had to write a Windows service in Delphi, Dr. Bob's articles provided the most lucid explanations about all the ugly details of Windows Services.

Swart, being a well recognized Delphi authority, I'll read any thing the good doctor publishes. I'm drooling to get my hands on this one.

The simplest way to prevent the circular event firing is to check the form's ActiveControl property. This property indicates which component currently has the focus.

The OnChange event should read as follows:

procedure TForm1.EditChange(Sender: TObject);
begin
if TEdit(Sender).Name <> TEdit(ActiveControl).Name then
   begin
       // do processing
   end;
end;

Implementing design patterns can be difficult and little sample code exists that walks you through the process. The purpose of this article is to walk through the implementation of a program that uses the Composite and Visitor design patterns. The sample project is written in the object-oriented language, Java, but it could just as easily have been written in C++.

Promoted as a single source cross-platform runtime system (Write Once, Run Anywhere). Java builds on and in some ways simplifies the object oriented features of C++. Java applications are typically compiled to byte-code and can run on any platform running the Java Virtual Machine (JVM).

Target Platforms: Java is suitable for creating many types of cross-platform applications that target the JVM including desktop business applications.

The Eclipse IDE for Java EE Developers contains everything you need to build Java and Java Enterprise Edition (Java EE) applications. Considered by many to be the best Java development tool available, the Eclipse IDE for Java EE Developers provides superior Java editing with incremental compilation, Java EE 5 support, a graphical HTML/JSP/JSF editor, database management tools, and support for most popular application servers.

Lots here!  JBuilder TV is part of CodeGear's developer network. Contains both audios and videos.

Language Overview: Class-like language with limited but usable class-like and object-like functionality but no formal inheritance nor visibility control, etc.

Target Platforms: JavaScript is most commonly used to extend HTML by executing code on the browser side when visiting a website. It does have other uses including server side scripting and AJAX.

JavaScript is useful for adding interactivity to the World Wide Web because scripts can be embedded in HTML files (i.e., web pages) simply by enclosing code in a tag pair. All modern browsers can interpret JavaScript -- albeit with some irritating caveats. (More about them below.)

In practice, JavaScript is a fairly universal extension to HTML that can enhance the user experience through event handling and client-side execution, while extending a web developer's control over the client's browser. And that's worth a FAQ.

Using loop structures in ObjectPAL (for, forEach, scan, while, and looping with timers).

In ObjectPAL, you declare one or more constant values within a const..endConst block. Optionally, you can specify the dataType by casting the value as part of the declaration. If you do not specify the data type, the data type is inferred from the value as either a LongInt, a Number, a SmallInt, or a String. As with variables, the const..endConst block can come within a method or procedure as the first bit of code, or in the Const window. Putting it above the method or procedure is allowed but has no significance so don't.

const
  kFeetToMeter = Number(3.2808)
  kMeterToFeet = Number(.3048)
  kName = String("Mike")

  kCA = "California"     ;String inferred.
endConst

This is a child's keyboard game for ages up to about age 4. All the keys are disabled except for the letters and the numbers. When the player presses a letter or number a random sound is generated and the character is shown. This games teaches young ones to press just the character keys. It also demonstrates several techniques including disabling keys, displaying images, generating sounds, and generating random numbers.

Borland's BDE download page. Another good resource is Borland's BDE Utilities and Updates page.

Does Paradox for DOS run on Vista?

Yes, but you must use the compatibility mode.

List of Perl operators.

Language Overview: Perl is a stable, cross platform programming language.

Target Platforms: Perl is most suitable for creating websites targeting any browser (any web server with the Perl module installed).

History: PERL is an acronym for Practical Extraction and Report Language. It is used for mission critical projects in the public and private sectors. Perl is Open Source software, licensed under its Artistic License, or the GNU General Public License (GPL). Perl was created in 1987 by Larry Wall.

ActivePerl is the industry-standard Perl distribution, available for Windows, Linux, Mac OS X, Solaris, AIX and HP-UX. Developers worldwide rely on ActivePerl's completeness and ease-of-use, while corporate users protect their infrastructure and stay competitive with quality-assured ActivePerl business solutions.

Includes core Perl, popular modules, the Perl Package Manager (PPM), and complete documentation. The Windows version provides additional features that have made ActivePerl the worldwide standard for Perl on Windows.

PHP is a hybrid language with both traditional PHP and OOP features. PHP is widely-used general-purpose scripting language that is especially suited for web development and can be embedded into HTML. PHP has been used to create some amazing web content, particularly outstanding message boards.

Target Platforms: PHP is most suitable for creating websites targeting any browser (any web server with PHP installed).

Overview and introduction by Nick Hodges (Delphi for PHP product manager).

What PHP version does Delphi for PHP support?

Delphi for PHP is based on PHP version 5. Meaning, the VCL for PHP extends the standard libraries that ship with PHP 5. This also means you can deploy your Delphi for PHP website on any hosted website that has PHP 5 installed.

Note: You can deploy your Delphi for PHP websites on the hosted websites we offer on our http://www.prestwoodhosting.com web hosting services website.

How to become a moderator and moderator's guide.

Prism supports abstract class members and abstract classes using the abstract keyword. An abstract class is a class with one or more abstract members and you cannot instantiate an abstract class. However, you can have additional implemented methods and properties. An abstract member is either a method (method, procedure, or function), a property, or an event in an abstract class. You can add abstract members ONLY to abstract classes using the abstract keyword. Alternatively, you can use the empty keyword in place of abstract if you wish to instantiate the abstract class.

This page provides a summary of Delphi Prism syntax differences for customers familiar with Win32 Delphi.

How close is the syntax for Delphi for Win32 and Delphi Prism?

Pretty close. You will definately be comfortable but there are differences. Delphi Prism includes a "compatibility" switch you can use that will enable certain "Delphi for Win32" language features so you can increase your comfort level. This option can be set on a per-project basis as part of the project options tab.

Although I'm just getting started, I will be documenting differences in my Delphi and Prism Cross Reference Guide. This guide will help when you switch from one language to the other.

They don't really. In PSDP Online, you set the PSDP Phase of tasks and their two sub-types defects and artifacts only. Requirement Items, Design Items, and Test Scripts do not use the concept of PSDP Phases because they are documentation-only items. You add various development tasks set to the appropriate phase to create, flesh out, and use them to build and test but they do not contain workflow themselves.

The PSDP Phase of Defects is always Phase 6 Testing & Rework. Although Tasks and PSDP Artifacts can be set to any PSDP Phase, their default is Phase 2 Requirements. For PSDP Artifacts, most of the time you will leave it set to it's default. On the other hand, you will set tasks to whatever phase the task belongs to.

Check the IP address of the SMTP Virtual Server. If you want to serve ALL IP's on that box, then set it to All Unassigned IPs.

Converts HLP files to many formats including PDF, RTF, HTML, DOC, CHM, TXT, DBF, XML, CSV, XLS, MDB, MCW, etc.

Help and Manual is a mature, and reasonably-priced, authoring tool for WinHelp, Compiled HTML Help (CHM); plus PDF, and Word documentation.

Under the covers, your authoring project is maintained in XML.

It can convert existing help and documentation from a number of formats, and it is very author-friendly.

Language Overview: Class based language. Although you can create classes, VB Classic is not fully OOP. It is a traditional language with a few OOP extensions. You code in a traditional approach using functions, procedures, and global data, and you can make use of simple classes to help organize your reusable code. It also supports one-level abstract class to implemented class using the Implements keyword.

Target Platforms: Microsoft Visual Basic 6 is most suitable for creating Windows desktop applications that use the VB600.DLL runtime DLL within Microsoft Windows.

Declare and implement VB.Net classes after the form class or in their own .vb files. Unlike VB Classic, you can have more than one class in a .vb class file (VB classic uses .cls files for each class).

VB.Net supports abstract class members and abstract classes using the MustInherit and MustOverride modifiers.An abstract class is indicated with a MustInherit modifier and is a class with one or more abstract members and you cannot instantiate an abstract class. However, you can have additional implemented methods and properties. An abstract member is either a method (implicitly virtual), property, indexer, or event in an abstract class. You can add abstract members ONLY to abstract classes using the MustOverride keyword. Then you override it in a descendant class with Overrides.

How do you launch a Windows application in VB.Net? How do I open the default browser to a specific URL?

'Launch a Windows application.
System.Diagnostics.Process.Start("notepad.exe")

'Or just...

Process.Start("calc.exe")

'Open a website with the default browser.
System.Diagnostics.Process.Start("http://www.prestwood.com")

DHTML Menu Builder is the tool of choice for building Javascript menus for our Prestwood family of websites.

Complete dhtml menus can be built, in a matter of minutes, without writing a single line of code.
No special plugins and no programming or HTML knowledge required, with just DHTML Menu Builder you'll be able to create great looking and functional dhtml menus for all your web sites.

Don't reinvent the wheel. Use one of the many menu builders on the market. 

I use a product called DHTML Menu Builder. He's worked out all the problems and it really didn't seem worth my time since someone else had already worked out all the issues between different browsers and browsers on different OSes. His menus still aren't perfect, but boy, they sure are close.

The software is located at http://software.xfx.net/

This is our security and privacy policy. You are welcome to use it for your website. You will most likely want to update it a bit as it's pretty specific to our website.

Vista targets consumers so it does have limits. Vista Business, Enterprise, and Ultimate OS support 2 physical CPUs; others support one only. There is no limit on the cores. So, for example, you could have 2 physical CPUs with 2 cores each and Vista Business will fully utilize all four processors. If you need more, use the Windows server OSes.