I'm going to date myself here, but this reminds me in some ways of Microsoft's BASIC 7.0 (circa 1989).
One of the new features of 7.0 was a library for producing text mode GUIs with dialog boxes and the like. Because the language didn't support anything resembling a callback, everything had to be written in what was essentially "immediate mode". Lots of control flow that would normally be down in the library stayed up in user code. The net result aligned well with the description in this article: "...much shorter but more intensive, every thing is packed in a single function."
This approach also presented lots of opportunities for errors caused by failing to correctly code something that would be default behavior in a normal library.
Never seen anything else quite like it, aside from this. (Which, quite frankly, I'm happy about.)
One of the new features of 7.0 was a library for producing text mode GUIs with dialog boxes and the like. Because the language didn't support anything resembling a callback, everything had to be written in what was essentially "immediate mode". Lots of control flow that would normally be down in the library stayed up in user code. The net result aligned well with the description in this article: "...much shorter but more intensive, every thing is packed in a single function."
This approach also presented lots of opportunities for errors caused by failing to correctly code something that would be default behavior in a normal library.
Never seen anything else quite like it, aside from this. (Which, quite frankly, I'm happy about.)