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inheritance Posts

"inheritance" Knowledge Base Posts

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Mike Prestwood
1. The Future of Paradox Blog

If you have an existing Paradox system you can keep using it but you'll need to skip the Vista operating system and either stick with Windows XP or move to Windows 7. Because better tools exist, you may very well want to put a plan together now for converting to another development tool or at least understand what the future is likely to hold. If you're a power-user or researcher working with data, stick with Paradox.

Posted to KB Topic: Tool Basics
13 years ago, and updated 31 days ago
(38 Entries , last by james.s6 )

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Corel Paradox / ObjectPAL Coding

Mike Prestwood
2. OO/UML: Aggregation versus Composition

Our most popular article in the history of our online community! Explains the "is a", "has a", "uses a", and "looks like" relationships (updated May 2007). "Is a" is inheritance, "looks like" is interfaces, "has a" is aggregation, and "uses a" is composition.

Posted to KB Topic: Object Orientation (OO)
16 years ago, and updated 8 years ago
(8 Comments , last by mprestwood )

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Coding & OO

Mike Prestwood
3. Become a Prestwood Developer

We are always looking for talented developers to work with us at our corporate office in Citrus Heights, CA and remotely from your home office.

Posted to KB Topic: Help Wanted!
11 years ago, and updated 8 years ago

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Prestwood IT Solutions

Mike Prestwood
4. Delphi Overriding (virtual, override)

In Delphi, you specify a virtual method with the virtual keyword in a parent class and replace it in a descendant class using the override keyword. Call Inherited in the descendant method to execute the code in the parent method.

Posted to KB Topic: OOP
9 years ago, and updated 8 years ago
(2 Comments , last by Anonymous )

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Pascal and Delphi Coding

Mike Prestwood
5. Delphi Class Helpers (class helper for)

Delphi allows you to extend an existing class without using inheritance. Buggy in 2005 and not officially supported but stable and usable in 2006 and above. You declare a class helper similiar to how you declare a class but use the keywords class helper for.

  • You can name a helper anything.
  • Helpers have access only to public members of the class.
  • You cannot create an object instance directly from a class helper.
  • self refers to the class being helped.
Posted to KB Topic: OOP
9 years ago, and updated 8 years ago

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Pascal and Delphi Coding
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"inheritance" Message Board Posts

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Thread 5 of 5

Brian Prestwood
Silverlight = DLR + WPFe
{Too Long!}
Posted to MB Topic: Coding Techniques « Coder Board
12 years ago
6 replies. Last post:

bprestwo
{Too Long!}
12 years ago
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Mike Prestwood
9/1 Brown Bag - Action Lists, Inheritance, Friendl
{Too Long!}
Posted to MB Topic: Coding Division « Staff Board
11 years ago
2 replies. Last post:

mprestwood
Wes,, , Excellent. Let chat about this at our next brown bag. I've never used it but I remember you told me a bit a about it. I'd like you to tell us what it's used for and essentially how it works., , I'm very curious about that topic., , Mike Mike Prestwood
11 years ago
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Thread 3 of 5

Draconas
Win XP Controls - IDesigner
Don't know if anyone here can help but I downloaded the freeware component WindowsXP controls for one of my apps. When compiling and installing the package it brings up the "unknown type" error as to the inheritance of one of the major methods., , The type in question is "IDesigner". Has anyone else had this error from something and know what component pack I need for it?
Posted to MB Topic: Delphi Single User Apps « Delphi Board
12 years ago
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Brian Prestwood
C#?
Assuming C# is intended to compete with Java, I wonder why Microsoft didn't just focus on VB. Now that VB has implementation inheritance it is a viable option for OOP.
Posted to MB Topic: C# & WinForms « C# Board
12 years ago
3 replies. Last post:

dprothero
{Too Long!}
12 years ago
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dprothero
C# Introduction and Overview
{Too Long!}
Posted to MB Topic: C# & WinForms « C# Board
12 years ago
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