2010-08-07
2010-08-07. Pascal Programming
After looking further at the SysUtils unit, I found out some small piece of asm code I didn't notice at first.
There is some hidden and not documented code in every program using the DB features, in order to verify that you have the right to use some drivers or DB features.
The license checking performed by Borland (it was a trick existing in Delphi 4, or perhaps before) is somewhat childish.
2010-08-06
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.
I have the same requirement sometimes, for example for our framework or for low-level units.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.
2010-08-04
2010-08-04. Open Source › mORMot Framework
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.
2010-07-30
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.
2010-07-27
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!
2010-07-24
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.
2010-07-23
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.
2010-07-22
2010-07-22. Open Source › mORMot Framework
The Synopse SQLite3 Database Framework was just released under Version 1.8.
SQLite3 just officially reached version 3.7.0, so it's time to commit our changes from our source code repository to the main "stable" zip.
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