Synopse Open Source

2010-08-06

Save object, stop class hegemony!

By AB4327-GANDI, 2010-08-06. Pascal Programming

In a recent thread in the Embarcadero Discussion Forums, Vedran Vuk posted some questions about object keyword.
His purpose was to use object instead of class to improve speed and memory consumption:

I do use classes. I just want to use objects on smaller classes that don't really need initialization or RTTI. Plus, I can directly operate on it like a record with no need for constructors and it can be sealed and has inheritance. Every byte matters in this case.

Rudy posted on the EMB forum that

The "object" type is deprecated. As was said, it mainly exists for compatibility with old Turbo Pascal. That is why it is not documented very well. It's use is not promoted.

I have the same requirement sometimes, for example for our framework or for low-level units.

I do like such plain-old object type, and don't want to see this object feature marked as deprecated in future EMB versions.

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2010-08-04

Synopse SQLite3 Framework Main Demo - draft

By AB4327-GANDI, 2010-08-04. Open Source › mORMot Framework

The SQLite3 MainDemo source code has just been uploaded to the repository.

This application is just a database tool which stores text content and files into the database, in both clear and "safe" manner. Safe records are stored using AES-256/SHA-256 encryption. There is an Audit Trail table for tracking the changes.

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2010-07-30

Compiler enhancement proposal: threadlocalvar

By AB4327-GANDI, 2010-07-30. Pascal Programming

As I wrote in a previous post, Delphi string, dynamic array and memory manager don't like multi-core CPU.

My proposal is to add a threadlocalvar keyword, to be used instead of var in your code, to mark some variables to be used in only the current thread. Then the compiler and RTL won't have to use the LOCK instruction, and the application will be MUCH faster in multi-thread environment.

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2010-07-27

Hyphenation in Delphi

By AB4327-GANDI, 2010-07-27. Open Source › Open Source libraries

We made some years ago a Delphi unit for hyphenation of text.

Such an unit, together with our SynPdf library for example, could be useful in your application. So we released the source!

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2010-07-24

Damnatio Memoriae

By AB4327-GANDI, 2010-07-24. Pascal Programming

You sure heard about the "CrossKylixGate"... A Great tool I used for years (CrossKylix) has just been updated. Its author (named Simon) posted an announcement in the Embarcadero forums. Then the post has been deleted by "Team B" members, because of some old story.

But not only Simon has been censured. Since I like and use this free tool, I posted a very "soft" post just with the announcement of the CrossKylix update, with some explanations and precisions. No debate. Just a link to the download page. Then my whole thread was deleted.

It just sounds like a "damnatio memoriae" to me.

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2010-07-23

Unit Testing light in Delphi

By AB4327-GANDI, 2010-07-23. Pascal Programming

Automated Unit Testing is a great improvement in coding safe applications.

If you don't know about it, visit http://xprogramming.com/index.php then come back here, and you'll discover how we implement unit testing in a KISS way, in pure Delphi code.

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2010-07-22