That's called program synthesis which is a hot research area. Specifically, what you mention is called "programming by example". I can't remember many examples

That's called program synthesis which is a hot research area. Specifically, what you mention is called "programming by example". I can't remember many examples on top of my head but some people from Microsoft Research are working on it for example: https://microsoft.github.io/prose/ https://microsoft.github.io/prose/