Articles by yanniel (Technical Blogs: 22)

In this post I am implementing the Delphi way to request the Google Toolbar’s PageRank (PR).

Pascal Server Pages.

Deep copying (cloning) objects in Delphi.

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”.

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 a convention, since you can define a constructor with whatever name you choose.

Delphi Implementation for the OpenSubtitles API.

A function that returns the Nth Fibonacci number.

The purpose here is not the mathematical stuff, but to provide two implementations of the factorial of a number in Delphi (Object Pascal).

The ABC for Delphi localization is Resourcing, Unit Conversions, and Dynamic Messages.

With TLang you can define a collection of native strings to be localized and the corresponding translations to a particular language.

String comparison in Delphi

I wrote the following two functions with the purpose of compressing / decompressing string values within a Delphi application.

The multiton is somewhat an extension of the singleton pattern.

A working example of the Template Method design pattern in Delphi

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.

In my previous post I introduced the decorator design pattern to you. I used a fairly simple example in order to give you a flavour of the pattern. I wrote Delphi code for that matter and I focused in having ONE, and only ONE, decorator class.

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.”  

Long overdue here is my second article about Test Driven Development (TDD) in Delphi. This is a continuation of TDD in Delphi: The Basics, another post that I wrote a few months earlier. I would like to focus in a particular step within the TDD cycle: refactoring the code. Refactoring means optimizi

A few examples.

I want to give a fairly simple Delphi example that will expose the dependency injection pattern.

No technique can stop testing from being a fag.

Salary Guide for Delphi developers.