Rust does this too. Since docs are generated from sources every docs page has a [src] button that has the context the docs were generated from, which means the function source. Super easy and intuitive to switch between the two.
Its good that most newer / modern languages have learned how valuable both easy documentation and pairing the docs with the code are.
Its good that most newer / modern languages have learned how valuable both easy documentation and pairing the docs with the code are.