Book Image

Delphi High Performance

By : Primož Gabrijelčič
Book Image

Delphi High Performance

By: Primož Gabrijelčič

Overview of this book

Delphi is a cross-platform Integrated Development Environment (IDE) that supports rapid application development for Microsoft Windows, Apple Mac OS X, Google Android, iOS, and now Linux with RAD Studio 10.2. This book will be your guide to build efficient high performance applications with Delphi. The book begins by explaining how to find performance bottlenecks and apply the correct algorithm to fix them. It will teach you how to improve your algorithms before taking you through parallel programming. You’ll then explore various tools to build highly concurrent applications. After that, you’ll delve into improving the performance of your code and master cross-platform RTL improvements. Finally, we’ll go through memory management with Delphi and you’ll see how to leverage several external libraries to write better performing programs. By the end of the book, you’ll have the knowledge to create high performance applications with Delphi.
Table of Contents (16 chapters)
Title Page
Copyright and Credits
Packt Upsell

Behind the scenes

A critical part of writing fast code is to understand what happens behind the scenes. Are you appending strings? You should know how that is implemented in a compiler. Passing a dynamic array into a function? Ditto. Wondering whether you should create 10,000 instances of a class or just create a large array of records? Knowing the implementation details will give you the answer.

In this section, I'll dig down into some frequently used data types and show how using them will bring in unexpected complexity. I will discuss memory and memory allocation, but I will treat them as very abstract entities. I'll say words like "A new string gets allocated" with which I'll mean that a secret part of code, called memory manager, gets memory from the Windows and tells the program: "You can store your string here." We'll dig deep into the bowels of memory manager in Chapter 4, Memory Management.

A plethora of types

The Delphi language contains an immense number of built-in types. There...