When viewing all community solutions, there is optionally an angle-bracketed number, e.g. <>14 in the attached screen capture. It’s not immediately obvious to me what it is, and inspecting the element didn’t help. The JSON attribute is “num_loc”–which doesn’t appear to be “lines of code…”
I do believe it’s lines of code, but not all community solutions have them. I’d assume it’s a feature that launched with Exercism v3 since randomly picking the Reverse String exercise on the Julia track, only the solutions within the last year have that marker.
When looking for a concise solution, it could be helpful if the Community Solutions had a sort by Lines of Code option (in addition to the Most Starred and Newest).