Hi, I made a chart for languages developed on github (https://github.com/showcases/programming-languages) contrasting the acquisition of new contributors to main github repository (GH) with new tagged questions on stackoverflow (SO).
One of the tenets of the Julia community is that the "two language problem" hinders the development of language ecosystems: the users of a language have limited means of contributing to the ecosystem if development of the language itself and its libraries has to resort to lower level programming languages for various of reasons. Then there is the frequent issue whether the "ecosystem" is mature or if it shows sustainable rate of growth. For julia I often see that there is a very natural transition from the first install to the first commit to JuliaLang/julia. The charts show "tagged questions per month on stackoverflow" and "first commits by users who never commited before per month", identified by unique username, so counting Jeff four or five times. There are some patterns, like languages of theoretical interest (dylan), mature languages in wide use with small teams (ruby) or languages attracting new developers at a high rate while gaining traction in the public at a later point (elixir). Nice to see that julia is welcoming new contributors at a top rate.
growth2.pdf
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