I refactor your old code for free!

Do you have an old project that still uses AnsiStrings, pointers in arrays or TStringLists, hardcoded typecasts, goto, timers, Application.ProcessMessages, global variables, etc?

Would like to get it up to date, by all modern programming standards, and compatible with 64 bit and the latest Delphi edition? I will do it for free.

What’s the catch?

Amsterdam Delphi Summit 2025

If you have been to the Delphi Summit and we had the chance to talk and I haven’t sent you yet and email back, please drop me an email.
I have contacted some of the people I meet there, but for some others I have lost the contact details.

Hi there!

I’m Gabriel, a seasoned software engineer (MVP) based in EU with over two decades of hands-on experience in both software and hardware. I have a bachelor degree in applied electronics (UPIT) and a Master of Science in Engineering (University of Liverpool). I’ve embarked on a fascinating journey through the ever-evolving programming landscape. My programming odyssey began in 1992 when I put my hands on a Z80 computer. Pascal followed in 1995 and I kept using Delphi until today (Delphi 11). Since then, I’ve traversed multiple programming languages, but Delphi has always been my cherished “home.”

I am interested in all the nitty-gritty aspects of low-level coding, binary files, speed optimizations, memory management, etc.
I am adept of clean, secure and modular code, with zero global variables, zero compiler hints/warnings, zero memory leaks. I develop my own software products under the CI/CD philosophy. Still I am a FreeAndNil-er*.

Back in the 2000s, I developed a popular wallpaper manager in Delphi that reached over 1,000 downloads per day.

I also wrote about 100 visual components (VCL) and quite a bunch of libraries. One of them, the general-purpose Light Saber library, consists of about 300 files and it is distributed with Delphi (via GetIt). The latest addition is an image recognition library, the only one of this kind for Delphi.

In 2006, I switched to the medical field and co-founded a bioinformatics-focused company, specializing in software solutions for molecular biology. We developed over 20 bioinformatics products, all written in Delphi. Our flagship product (close to 400,000 lines of code) was a DNA sequence assembler for Sanger chromatograms.

The software has been sold worldwide and is used by universities, research institutes, hospitals, and government bodies, and has been cited in thousands of scientific articles and over 200 books and patents. For example, one cool place where it was used, is scientific research about storing binary information in the DNA of a bacteria. How great is the technology today?

In the last years I released four Delphi books, but I won’t stop to this number! Two more are under production.

In the free time I build electronic projects with my son, read science fiction, science news and listen to my music and do (looong) bicycle rides.

 

Code is like humor…. When you have to explain it, it’s bad. – Cory House

Recent blogs:

  • Connecting Claude to Delphi

    Prompt: Can I Claude Code build from command line via MSBuild and the analyze the ouptut of the Delphi compiler/msbuild? The compiler is located in c:\Delphi\Delphi 13\bin\dcc32.EXE but I would prefer to pas the dproj file to MsBuild. I think MsBuild is installed here: c:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe Answer: this requires the user to enable the WSL Interop…

  • A Delphi Fuzzy String Compare Algorithm

    FuzzyStringCompare calculates an approximate similarity percentage between two strings. It uses a heuristic to count matching characters that are roughly in similar positions, allowing for a tolerance based on string lengths. The tolerance is about one-third of the longer string’s length plus the length difference. The algorithm greedily matches characters from the shorter string to…

  • Useful console commands for Claude Code

    Claude Installation /help Get usage help /config Open the Settings interface (Config tab) /doctor Checks the health of your Claude Code installation /exit Exit the REPL   Claude Setup /model Select or change the AI model /output-style [style] Set the output style directly or from a selection menu This changes how Claude Code communicates with…

  • Trying out Claude Code for Delphi

    Intro Following a glorious review by a guy on Delphipraxis I decided to test Claude Code which was sold there as the ultimate productivity tool for Delphi (1h of development with Claude valuing as much as a whole day of alone programming). With hopes low (from my previous experience with AIs), I decided to perform…

  • FMX bug – Form has incorrect size after startup

    I have this weird bug in Delphi 13 FMX where the height of the controls is not correct, at app startup. procedure TForm1.AfterConstruction; begin inherited AfterConstruction; MakeDemoBubble; end; TAutosizeBoxText (based on TRectangle) is parented in a ScrollBox. It is set to Align=Top. procedure TForm1.MakeDemoBubble; begin mmoUserResponse.Text := ‘WhatsApp-like text bubble. ‘ + #13#10+ ‘Cool and…

  • Solar powered eBike

    I travel around 2000Km per year with my bicycle. And what can be better than 2000Km? 4000Km 🙂 So, I will attempt to attach a solar panel to my bicycle to replenish the battery (at least partially). Solar panels efficiency Typically ranges from 150-250 W/m² under peak sunlight. High-end panels hitting 220-300W/m². Factors Influencing Output…

 

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