Modern Object Pascal Introduction for Programmers

2 days ago (castle-engine.io)

This takes me back, my first adventure in programming was as a 12 year old creating a Pong clone using Turbo Pascal on DOS. It came in handy later as a 20 year old when I was doing freelance as a Delphi dev. Amazing to see Pascal on HN.

  • At around the same age I learned a version/imitation of Object Pascal for scripting the PIRCH IRC client on windows 95. It was neet when a friends dad who was a professional programmer showed me the latest version of Delphi, which he was pretty excited about, and I could actually understand most of what he was showing me.

There's also a new book called Free Pascal From Square One released in 2025 that teaches programming and pascal

I bought Delphi ages ago, but never got very far with it, which I regret.

I'd love to be able to take it up again, and this document looks very promising for that, esp. paired with:

https://wiki.freepascal.org/pas2js

which I now see is supported in Lazarus.

If someone has an example graphical project which compiles to an HTML page w/ JavaScript using the above, I'd love to see it and a detailed set of build instructions and notes on installing the needed toolchain and deployment. (as a note, I'm currently working in flet.dev using Python which allowed me to get a small prototype up-and-running, but I'm still looking into self-hosting and doing something more complex)

It's amazing how underestimated the Object Pascal language is. Certain people or rivals want to write it off or declare it's "dead", yet the language (including various dialects) are still going strong.

  • Yeah, it was pity that Borland lost its way, and Apple decided to refocus from Object Pascal into C++.

    Otherwise it would still be a big contender.

    Everything that Zig offers over C as selling point was already there in Object Pascal.

    • I recall the turning point was when id used the Watcom compiler for DOOM. Watcom had the 32-bit flat model DOS extender and were starting to add the difficult optimizations. Turbo/Borland Pascal was built for compile and link speed, not even getting a real -O option until Delphi (except for turning off range and stack checking)

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    • Comptime? Vastly superior toolchain? Trivial C interop? Sub-second incremental compilation in large projects? I'm not familiar with Object Pascal at all, so do correct me if I'm wrong, but I'd really be surprised if it has much of Zig's standout features.

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    • > Apple decided to refocus from Object Pascal into C++

      IIRC Apple went and made Objective-C(/C++) and then eventually Swift. Not sure if they actually embraced C++ all that much - did they really?

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  • People hate the verbose syntax. It doesn't bother me, but I've been surprised how common that is described amongst people that don't care for Pascal.

    Personally, in that family of languages I prefer Ada, but I gave up with programming and programming languages.

    • For me it's less the verbose syntax but more the weirdness and inconsistency of it. Like making a distinction between a procedure and a function, or returning data from a function by assigning it to a magical variable. It feels like a cobbled-together language rather than a properly designed one.

  • IMO it is not entirely dead, but not really "alive" either. TIOBE even has Object Pascal mentioned right now in TOP 20. Now, TIOBE has tons of issues, but it also means that there exists some tangible interest.

    Still, I don't feel many people want to use Object Pascal these days. If you have the choice between Python and Object Pascal, most people will undoubtedly use Python. It's just how it is right now, and I also don't see how that can change in favour of Object Pascal. Programming languages nowadays have so much more competition, and people are less tolerant of flaws. Strangely enough, people barely seem to work on these flaws; this is one of my pet peeve with ruby, the documentation should be much better but it is not. I no longer find that acceptable in 2026, with AI spam slop lowering the quality and google search being terrible and almost totally useless nowadays. You'd assume that a counter-move to this slop-degradation would be to massively improve documentation, but you still find core projects in ruby or at the least important add-ons, to have low-quality documentation. And barely anybody wants to improve on that either.

I was introduced a very long time ago --- aka Delphi 2. I really like the language but there are mainly 2 problems that stand in the way of using it.

1) The code isn't as "optimized" as it could be.

2) The talent pool is limited --- chicken or egg issue.

It has been this way for a very long time so I don't see it changing.

  • What do you mean by “not optimized enough“? Binaries created with Free Pascal Compiler are very small, compilation time is super fast and runtime performance was never an issue for the typical system/userland programs. I think in many ways on par or ahead of other mainstream system programming languages.

    • Additionally, it eventually shared the same backend with Borland C++, and nowadays C++ Builder.

      Also Embarcadero has also adopted LLVM, while still having fast build times.

  • As a different datapoint Pascal is still taught here in Romania in secondary school just as it was the case 20 years ago.

    Bigger problem is that they teach the fundamentals with the abandonware that is turbo pascal instead of using something like the modern Free Pascal Compiler. Which means knowledge of what is possible outside curricula is limited.

    Last year I almost was tasked with porting some Pascal codebase to a modern language. Problem was the project had a bus factor of 1, legacy overengineered and would only compile on windows with some proprietary compiler.

    Maybe that company would use Claude/Codex or something like that, today, to port the project.

this is really neat to see and that it has support for any modern system. I don't know pascal and could be a fun way to learn it.

I think I last used Pascal, TurboPascal if I remember correctly, in school - perhaps at age 17 or something like that. I recall that we used to define some things from geometry, e. g. a triangle, calculating sides, angles, surface area and so forth, and then of some more objects from geometry.

I have not used Pascal since then but it was not the most terrible programming language of all times either. These days I would not know why I'd want to use it, compared to IMO better languages. Nonetheless I found it ok for teaching in school back then.

> 5.1. Remember to free the class instances

> The class instances have to be manually freed, otherwise you get memory leaks.

manual memory management in 2026?