[slaymaker1907]

I think the examples others have highlighted show the problem with just making it a library. They’re all lacking a lot of features from Prolog, particularly in terms of optimization. Just use Prolog if you need its features and invoke SWI-Prolog like you’d call any other language’s interpreter.

[whstl]

Agree. The optimization caveat also applies to OOP, another example someone threw in above.

Sure you can implement OOP as a library in pretty much any language, but you’ll probably sacrifice ergonomics, performance and/or safety I guess.