Story Category: Delphi Programming
VOTEPascal Server Pages – Pascal Script
Yanniel
Without getting too technical, I would define a Pascal Server Page (PSP) as a dynamic web page containing embedded Pascal Script (PS) code. When a web request is made, the PS code needs to be… … Read more
13 years ago in Delphi, Delphi Programming, Object Pascal Programming, pascal, Pascal Programming, Pascal Script
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Salary Guide for Delphi developers: Let’s make it
Yanniel
If you work as an IT professional in North America, you should probably find very useful the 2012 Technology Salary Guide published by Robert Half Technology.This guide exposes the compensation trends (salary trends) for pretty… … Read more
13 years ago in Delphi, Delphi Programming, Object Pascal Programming
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Generating Fibonacci numbers in Delphi: Recursive and iterative algorithms
Yanniel
In this post, I want to implement a function that returns the Nth Fibonacci number. Initially, I will provide a recursive implementation that derives directly from the Fibonacci sequence definition. Afterwards, I will recode the… … Read more
13 years ago in Delphi, Delphi Programming, iterative, pascal, Pascal Programming, programming, recursion, recursive
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Internationalizing your Delphi application: An ABC example
Yanniel
If you want to make your Delphi application general enough to address multiple locales, then you need to internationalize it. There are three common aspects that I want to emphasize (no necessarily in that order):… … Read more
13 years ago in Delphi, Delphi Programming, Object Pascal Programming, programming
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Multiton Design Pattern in Delphi
Yanniel
The multiton is somewhat an extension of the singleton pattern. It is referred as registry of singletons by the GOF. I don’t know for sure who appointed the name multiton: it’s an analogy derived from… … Read more
13 years ago in Creational Patterns, Delphi, Delphi Programming, Design Patterns, Object Pascal Programming, Object-Oriented Programming
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Dependency Injection in Delphi: a simple example
Yanniel
I want to give a fairly simple Delphi example that will expose the dependency injection pattern. No framework, no third-party library will be needed here: just plain Delphi code.I won’t dig into the different forms… … Read more
13 years ago in Delphi, Delphi Programming, Design Patterns, Object Pascal Programming, Object-Oriented Programming, programming
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Decorator Design Pattern in Delphi. Multiple Decorations
Yanniel
In my previous post I introduced the decorator design pattern to you. I used a fairly simple example (a silly example if you wish) in order to give you a flavour of the pattern. I… … Read more
13 years ago in Computers, Delphi, Delphi Programming, Design Patterns, Object Pascal Programming, Object-Oriented Programming, programming, Structural patterns
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Decorator Design Pattern in Delphi. Single decoration
Yanniel
Decorator (also referred as Wrapper) is classified by GoF as a structural pattern. Its purpose is to:“Attach additional responsibilities to an object dynamically. Decorators provide a flexible alternative to subclassing for extending functionality.”&nb… … Read more
13 years ago in Computers, Delphi, Delphi Programming, Design Patterns, Object Pascal Programming, Object-Oriented Programming, programming, Structural patterns
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Anonymous Methods in Delphi
Yanniel
Under the scope of Delphi, an anonymous method is either a procedure or function that’s unattached to an identifier. In other words, anonymous methods don’t have names, which is why they are called “anonymous”.Basically, you… … Read more
13 years ago in Computers, Delphi, Delphi Programming, Object Pascal Programming, Object-Oriented Programming, programming
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Hide the utter "Create" constructor of TObject in Delphi
Yanniel
In Delphi, constructors can be inherited; this doesn’t happen in Java, C# and C++ for example. Furthermore, constructors in Delphi can have multiple and different names; usually they are called Create, but this is just… … Read more
13 years ago in Computers, Delphi, Delphi Programming, Object Pascal Programming, Object-Oriented Programming, programming
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My contributions to the Delphi community at RosettaCode
Yanniel
RosettaCode is a wiki site that gathers a collection of programming tasks being resolved in as many programming languages as possible.You can post solutions to a particular task using a particular language (Delphi, Java, C++,… … Read more
13 years ago in Delphi, Delphi Programming, Object Pascal Programming, pascal, Pascal Programming, programming
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Parameterized Factory Method in Delphi
Yanniel
Factory Method is a creational design pattern, whose intent (according to Design Patterns: Elements of Reusable Object-Oriented Software) is to:“Define an interface for creating an object, but let subclasses decide which class to instantiate. Factory… … Read more
13 years ago in Creational Patterns, Delphi, Delphi Programming, Design Patterns, Object-Oriented Programming, pascal, programming
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Template Method Design Pattern in Delphi. A working example
Yanniel
The Template Method Pattern is very easy to understand and implement. Here’s the definition borrowed from Design Patterns: Elements of Reusable Object-Oriented Software book:“Define the skeleton of an algorithm in an operation, deferring some steps… … Read more
13 years ago in Behavioral Patterns, Delphi, Delphi Programming, Design Patterns, Object-Oriented Programming, pascal, programming, Template Method
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New certifications available for Delphi Developers
Yanniel
Last June 12th, 2011, I received an Embarcadero Community Newsletter pointing out that “certification exams are now available for Delphi developers. Embarcadero’s Delphi Certification Program offers two levels: Delphi Certified Developer and Delp… … Read more
13 years ago in Delphi, Delphi Programming, Object-Oriented Programming, pascal, programming
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