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Free Pascal VS D (Programming Language)

Compare Free Pascal VS D (Programming Language) and see what are their differences

Free Pascal logo Free Pascal

Free Pascal (aka FPK Pascal) is a 32 and 64 bit professional Pascal compiler.

D (Programming Language) logo D (Programming Language)

D is a language with C-like syntax and static typing.
  • Free Pascal Landing page
    Landing page //
    2021-07-29
  • D (Programming Language) Landing page
    Landing page //
    2023-05-09

Free Pascal features and specs

  • Cross-platform Compatibility
    Free Pascal supports a wide range of platforms, including Windows, macOS, Linux, and more. This allows developers to write code that can be compiled and executed on multiple operating systems without extensive modifications.
  • Open Source
    As an open-source compiler, Free Pascal is freely available for use and modification. This openness encourages community collaboration and continuous improvement of the software.
  • Strong Community Support
    Free Pascal has a dedicated and active community, providing extensive documentation, forums, and user support, which can be invaluable for troubleshooting and learning.
  • Compatibility with Delphi
    The compiler aims to be highly compatible with Delphi, making it easier for Delphi developers to transition their applications to Free Pascal with minimal changes.
  • Rich Set of Libraries
    Free Pascal comes with a comprehensive set of libraries and tools, allowing developers to create a variety of applications, from small utilities to complex software systems.

Possible disadvantages of Free Pascal

  • Steep Learning Curve
    For developers unfamiliar with Pascal, the language and its concepts may present a learning challenge compared to more modern languages such as Python or JavaScript.
  • Limited GUI Toolkit Support
    While Free Pascal does support some GUI toolkits, it may not have as robust or modern GUI options compared to other programming environments, which can be a limitation for developing desktop applications.
  • Less Popular
    Pascal is not as widely used in the programming community as other languages like Java or Python, which can result in fewer third-party tools, libraries, and resources.
  • Performance Overheads
    While Free Pascal is generally efficient, there can be some performance overheads compared with compilers specifically optimized for newer languages and architectures.
  • Limited Modern Language Features
    Free Pascal might lack some of the modern programming features found in newer languages, which can be a disadvantage for developers looking to use the latest paradigms and practices.

D (Programming Language) features and specs

  • Performance
    D is designed to be a high-performance systems programming language, offering performance comparable to C and C++ through native machine code compilation.
  • Expressiveness
    D features a rich standard library and modern language constructs, such as garbage collection, first-class arrays, and advanced templating, making it easier to write expressive and maintainable code.
  • Memory Safety
    D offers optional garbage collection along with manual memory management. This hybrid approach can help in developing safer applications by reducing memory-related errors.
  • Interoperability
    D can easily interoperate with C API, enabling seamless integration with existing C libraries and systems. It also supports better C++ interoperability compared to other languages.
  • Built-in Unit Testing
    D has built-in support for unit tests, allowing developers to write and run tests as part of the language itself, facilitating test-driven development.
  • Concurrency
    D offers built-in concurrency support with message passing, similar to the actor model found in languages like Erlang, making it easier to write concurrent and parallel programs.

Possible disadvantages of D (Programming Language)

  • Adoption
    D is not as widely adopted as other languages like C, C++, or Java. This limited adoption means fewer libraries, frameworks, and community support.
  • Toolchain Maturity
    While D's compilers and tools have improved over the years, they may still lack the maturity and feature set of more established languages, which can affect developer productivity.
  • Learning Curve
    D's richness and combination of paradigms (such as imperative, object-oriented, and functional programming) can present a steep learning curve for new developers.
  • Garbage Collection
    Although D offers optional garbage collection, its reliance on it for memory safety might be seen as a drawback for real-time system development where deterministic memory management is crucial.
  • Ecosystem
    The ecosystem for D is less vibrant compared to more popular languages, leading to potentially fewer third-party libraries, tools, and resources.
  • Standard Library Documentation
    The standard library documentation can be inconsistent or less comprehensive compared to other languages, making it difficult for developers to fully utilize all features of the language.

Free Pascal videos

Tin 8. Bài Thực hành 1: Làm quen với Free pascal.

D (Programming Language) videos

D Language Tutorial

Category Popularity

0-100% (relative to Free Pascal and D (Programming Language))
Programming Language
26 26%
74% 74
IDE
100 100%
0% 0
OOP
19 19%
81% 81
Text Editors
100 100%
0% 0

User comments

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Social recommendations and mentions

Based on our record, D (Programming Language) seems to be a lot more popular than Free Pascal. While we know about 56 links to D (Programming Language), we've tracked only 2 mentions of Free Pascal. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Free Pascal mentions (2)

  • AoC 2015 in multiple languages: Day 3 Pascal
    I used Free Pascal which I was quite impressed with. It supports multiple dialects and many targets. Source: over 3 years ago
  • One Commander – a new Windows 10 file browser
    As a tangent, I found it fascinating that Double Commander is developed with Free Pascal and Lazarus. https://github.com/doublecmd/doublecmd/wiki/Development https://freepascal.org/ https://www.lazarus-ide.org/. - Source: Hacker News / about 4 years ago

D (Programming Language) mentions (56)

  • Koto Programming Language
    >For me the biggest gap in programming languages is a rust like language with a garbage collector, instead of a borrow checker. I cannot agree more that's the much needed sweet spot/Goldilock/etc. Personally I have been advocating this approach for some times. Apparently the language is already widely available and currently has stable and wide compiler support including the venerable GNU compiler suite (GDC). It... - Source: Hacker News / about 1 month ago
  • Apple didn't fix Swift's biggest flaw
    Those languages are definitely with us, https://dlang.org/ https://www.embarcadero.com/products/delphi https://www.mikroe.com/mikropascal-arm https://www.eiffel.com/ https://www.ptc.com/en/products/developer-tools/objectada. - Source: Hacker News / 11 months ago
  • Berry is a ultra-lightweight dynamically typed embedded scripting language
    Show examples on the main web page. Try and find an AngelScript example. It's stupidly hard. Compare it to these web sites: https://dlang.org/ https://koka-lang.github.io/koka/doc/index.html https://vale.dev/ http://mu-script.org/ https://go.dev/ https://www.hylo-lang.org/ Sadly Rust fails this too but at least the Playground is only one click away. And Rust is mainstream anyway so it doesn't matter as much. I... - Source: Hacker News / over 1 year ago
  • Small Joys with Odin
    >and D The D language, that is. https://dlang.org. - Source: Hacker News / almost 2 years ago
  • Red Programming Language
    You are both right it seems. GP seems to have omitted withour GC. Number one on your list could be Dlang no? Not affiliated. https://dlang.org/. - Source: Hacker News / almost 2 years ago
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What are some alternatives?

When comparing Free Pascal and D (Programming Language), you can also consider the following products

Lazarus - Lazarus is a cross-platform IDE for the Free Pascal compiler.

Nim (programming language) - The Nim programming language is a concise, fast programming language that compiles to C, C++ and JavaScript.

Python - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.

Go Programming Language - Go, also called golang, is a programming language initially developed at Google in 2007 by Robert...

Rust - A safe, concurrent, practical language

V (programming language) - Simple, fast, safe, compiled language for developing maintainable software.