Book Image

Delphi Cookbook - Third Edition

By : Spinetti, Daniele Teti
Book Image

Delphi Cookbook - Third Edition

By: 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)

Using the Parallel Programming Library in the real world: Futures

Futures are a great tool in the tool chest of every programmer. But, wait! What's a future?

Well, while a task can be seen as a sort of asynchronous procedure, a future can be seen as an asynchronous function; however, while using a task, the process is quite clear (it runs in the background and uses some sort of messaging to talk to the other thread), the future is a bit more complex. When should I get the return value of the future? Let's talk about futures with an example. You can use futures to run tasks on a separate thread and then forget about them, but often, you'll want to use the result of the task. The future function returns an IFuture<T> reference that you can use to request the result of type T. The reference is like the ticket that a dry cleaner gives you; at any time, you can...