Book Image

Delphi Cookbook, - Third Edition

By : Daniele Spinetti, Daniele Teti
Book Image

Delphi Cookbook, - Third Edition

By: Daniele Spinetti, Daniele Teti

Overview of this book

Delphi is a cross-platform integrated development environment (IDE) that supports rapid application development on different platforms, saving you the pain of wandering amid GUI widget details or having to tackle inter-platform incompatibilities. Delphi Cookbook begins with the basics of Delphi and gets you acquainted with JSON format strings, XSLT transformations, Unicode encodings, and various types of streams. You’ll then move on to more advanced topics such as developing higher-order functions and using enumerators and run-time type information (RTTI). As you make your way through the chapters, you’ll understand Delphi RTL functions, use FireMonkey in a VCL application, and cover topics such as multithreading, using aparallel programming library and deploying Delphi on a server. You’ll take a look at the new feature of WebBroker Apache modules, join the mobile revolution with FireMonkey, and learn to build data-driven mobile user interfaces using the FireDAC database access framework. This book will also show you how to integrate your apps with Internet of Things (IoT). By the end of the book, you will have become proficient in Delphi by exploring its different aspects such as building cross-platforms and mobile applications, designing server-side programs, and integrating these programs with IoT.
Table of Contents (12 chapters)

Duck typing using RTTI

"When I see a bird that walks like a duck and swims like a duck and quacks like a duck, I call that bird a duck."
– James Whitcomb Riley

Clear, isn't it? What may not be so clear is that this approach can also be used in computer programming. Yes, even without an actual duck!

For design patterns lovers, duck typing is the smartest way to achieve the Visitor pattern goal.

Getting ready

Referring to duck typing, Wikipedia (http://en.wikipedia.org/wiki/Duck_typing) gives the following explanation :

"In computer programming with object-oriented programming languages, duck typing is a style of typing in which an object's methods and properties determine the valid semantics...