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D (Programming Language) VS NumPad

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

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D (Programming Language) logo D (Programming Language)

D is a language with C-like syntax and static typing.

NumPad logo NumPad

A web-based text editor with a powerful built-in calculator
  • D (Programming Language) Landing page
    Landing page //
    2023-05-09
  • NumPad Landing page
    Landing page //
    2023-02-09

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.

NumPad features and specs

  • Enhanced Productivity
    NumPad offers customizable shortcut keys that can speed up data entry and enhance productivity for users who frequently input numerical data.
  • Ergonomic Design
    The design of NumPad is likely ergonomic, catering to comfort during prolonged use and reducing strain on hands and wrists.
  • Wide Compatibility
    NumPad is compatible with various devices and operating systems, making it versatile for different users across multiple platforms.
  • Portability
    Being a standalone device, NumPad is portable and can easily be used with laptops and devices lacking a built-in numeric keypad.

Possible disadvantages of NumPad

  • Additional Cost
    Purchasing a NumPad can be an additional expense, especially for users who already have a keyboard with a built-in numeric keypad.
  • Requires USB/Bluetooth Connection
    Using NumPad requires an available USB port or Bluetooth connection, which might be limited on some devices, especially laptops.
  • Learning Curve
    Customization features might introduce a learning curve for some users, requiring time to set up and adapt to the new functionalities.
  • Potential Compatibility Issues
    Although designed for wide compatibility, some users might experience compatibility issues with less common devices or software.

Analysis of D (Programming Language)

Overall verdict

  • Overall, D is a solid programming language choice that balances performance with productivity. It may not be as widely adopted as some other languages, but it has a dedicated community and continues to evolve, making it a viable option for various programming tasks.

Why this product is good

  • The D programming language is considered good by many developers for various reasons. It combines the performance and low-level control of C/C++ with the expressive power and ease of use found in modern languages. D offers features like garbage collection, first-class functions, and compile-time function execution, providing both speed and flexibility. Its interoperability with C, the convenience of a powerful standard library (Phobos), and the availability of packages via the DUB package manager make it a practical choice for systems programming, application development, and rapid prototyping.

Recommended for

  • System programming enthusiasts looking for an alternative to C/C++
  • Developers interested in writing high-performance applications
  • Programmers who appreciate modern language features and strong community support
  • Projects requiring seamless C integration
  • Individuals looking for a language that supports easy code maintenance and scalability

D (Programming Language) videos

+ Add

D Language Tutorial

NumPad videos

+ Add

Glorious Numpad Review | Is The Most Expensive Numpad Good Value?

More videos:

  • Review - Why would you buy JUST a numpad?
  • Review - Buy this numpad!!

Category Popularity

0-100% (relative to D (Programming Language) and NumPad)

D (Programming Language)

NumPad

Programming Language
100 100%
Programming Language
0% 0
Productivity
0 0%
Productivity
100% 100
OOP
100 100%
OOP
0% 0
Calculators
0 0%
Calculators
100% 100

User comments

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Social recommendations and mentions

Based on our record, D (Programming Language) should be more popular than NumPad. It has been mentiond 60 times since March 2021. 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.

D (Programming Language) mentions (60)

  • Ask HN: What is your (AI) dev tech stack / workflow? (June 2026)
    I've spent 2 weeks (2-4h per day) to make D language[1] version of Sciter SDK [2] Choice of AI "tooling" was by accident - typed something like "how to define copy constructor in D for custom structure" in Microsoft's Copilot in Edge browser that gives context for AI. The answer was good enough for me and so I went with it further. [1] D language HQ : https://dlang.org/. - Source: Hacker News / 3 months ago
  • Rue: Higher level than Rust, lower level than Go
    > Mostly, I am not really trying to compete with C/C++/Rust on speed, but I'm not going to add a GC either. So I'm somewhere in there. Out of curiosity, how would you compare the goals of Rue with something like D[0] or one of the ML-based languages such as OCaml[1]? 0 - https://dlang.org/ 1 - https://ocaml.org/. - Source: Hacker News / 9 months ago
  • Pony: An actor-model, capabilities-secure, high-performance programming language
    The D language home page has something similar with a drop down with code examples https://dlang.org/. - Source: Hacker News / about 1 year ago
  • Show HN: D++lang – A new systems programming language with Python-like syntax
    What is this? There's a lot of red flags here. * The name "D" for a programming language was taken in 1999: https://dlang.org/. - Source: Hacker News / about 1 year ago
  • 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 / over 1 year ago
View more

NumPad mentions (6)

  • Ask HN: What Are You Working On? (June 2025)
    Numpad: https://numpad.io/ It's a web-based notepad calculator, which means it's a notes app but it can evaluate inline calculations like ```. - Source: Hacker News / about 1 year ago
  • Ask HN: What are you working on? (April 2025)
    I launched my web-based notepad calculator, https://numpad.io/, a few years ago. Right now I'm working on a version 2 that has user accounts, multiple documents, markdown support, and document exports. Everything is local-first and it uses CRDTs to sync documents. It looks like this: https://i.imgur.com/Plk1DQ4.png the calculator is mostly the same for now, with a few improvements. It's unstable right now, so I... - Source: Hacker News / over 1 year ago
  • Show HN: Heynote – A Dedicated Scratchpad for Developers
    This is awesome! I currently use numpad[0] for this, but would much prefer a local app. I would love to switch but the only thing holding me back is lack of Vim support. Are there any plans to add Vim keymap in the future? 0: https://numpad.io/. - Source: Hacker News / over 2 years ago
  • Show HN: Heynote – A Dedicated Scratchpad for Developers
    This looks fantastic. I will definitely give it a spin. I've been tracking what I call "computational scratchpad" apps for a while now but haven't found one that fits my environment/workflow yet. Maybe Heynote will. Here are some others that I've looked at: * https://soulver.app Granddad of them all, Mac-only, proprietary, expensive * https://numi.app Mac-only, proprietary, semi-expensive. Has a Github and claims... - Source: Hacker News / over 2 years ago
  • Ask HN: What side projects landed you a job?
    My side project NumPad https://numpad.io got me my current job at Decipad https://www.decipad.com/ (the similar naming scheme is a coincidence!). I came across Decipad while looking for a job, and messaged the founder, highlighting my work on NumPad. They were impressed enough that the hiring process ended up being just a few interviews, I've been there for almost a year now, and it's been pretty good! If there's... - Source: Hacker News / almost 3 years ago
View more

What are some alternatives?

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

C++ - Has imperative, object-oriented and generic programming features, while also providing the facilities for low level memory manipulation

Soulver - Soulver is a software application that functions as a calculator that allows you type a continuous stream of information rather than having to input data into multiple cells.

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

Numbr - An elegant calculator for the web

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

Numi App - Numi is a beautiful text calculator for Mac.

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