elixir (language)
the elixir programming language, on the erlang vm · 27,000 stars.
Application.get_env is one of the most used functions in the language, and its documentation did not say what it was for. i wrote the use case in. josé valim, who created elixir, reviewed it, refined it with commits of his own, and merged it. the same year i corrected ecto’s changeset documentation, and josé valim merged that too. elixir was the language of the weather api at rhea group, streaming map visualisations in 25 ms.