Skip to Main Content
Delphi High Performance
book

Delphi High Performance

by Primož Gabrijelčič
February 2018
Intermediate to advanced content levelIntermediate to advanced
336 pages
7h 52m
English
Packt Publishing
Content preview from Delphi High Performance

Strings

String are probably the most used data type in Delphi. They also have a very interesting implementation, optimized for fast execution. To be exact, AnsiString (with all its variations) and UnicodeString (also known as string) are optimized. The WideString type is implemented in a different manner. As short strings (declarations like string[17]) are only used for backwards compatibility, I won't discuss them in this book.

Let's deal with the more widely used AnsiString and UnicodeString first. A data of such type is represented with a pointer to a block, allocated from the memory manager. If a string is empty, this pointer will be nil (which is at the CPU level represented with number zero) and if a string is not empty, it will point ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Delphi Cookbook

Delphi Cookbook

Daniele Teti

Publisher Resources

ISBN: 9781788625456Supplemental Content