Modern Object Pascal: A Practical Guide for Experienced Programmers

Modern Object Pascal Introduction for Programmers – Castle Game Engine

Modern Object Pascal: A Practical Guide for Experienced Programmers

This book introduces modern Object Pascal, a language that has evolved far beyond Turbo Pascal. It covers classes, units, generics, interfaces, and other features comparable to C++, Java, or C#. Written for developers with prior experience, it offers concise explanations and practical examples, supporting both Free Pascal Compiler and Delphi. The author, creator of Castle Game Engine, emphasizes the language's type safety, native compilation, and active ecosystem.

I emphasize the word modern in modern Object Pascal. That’s because Pascal has evolved a lot, and it’s quite different from e.g. Turbo Pascal that many people learned in schools long time ago. Feature-wise, modern Pascal is quite similar to C++ or Java or C#.
  1. baranul

    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.

  2. WillAdams

    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)

  3. jqpabc123

    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.

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2026-09-26