I've only really joined the D community and started programming it rather recently. So far, the most of the libraries I've seen are either D bindings to C & C++ programs, or tools related to the language itself. Of the ones that aren't, I've seen none that say anything about being used by other languages. In short, all the D libraries I'm aware of appear to be made specifically for use by D programs.

Of the libraries I know of that are often used outside the language they are written in, most are in C. All the one's that aren't are in C++.

But are there any exceptions that I should be aware of? Are there any libraries that have been written in D, and then gotten considerable use by programmers without D experience, in programs not written in D?

I would think that this would be technically viable with the betterC option, though the difficulty would be in advertising it's compatibility to non-D programmers.

On Saturday, 20 April 2024 at 22:26:41 UTC, Liam McGillivray wrote:

You don't need betterC for that. You can call regular D from other languages just fine. I've spent years writing libraries in D that can be called from R (but just for my own use).

As for those types of libraries becoming popular with other language developers, well, I think that most anyone willing to trust a D library instead of a C library would have a strong preference to write their whole program in D. One reason C libraries are popular as extensions is because writing C sucks so furiously that you only want to write the minimum necessary in C and then get back to using a language with features.