~r/
/
Regex.scan(~r/#(?<tag>(my)?elixir(status|lang))/i, "Hello from twitter hashtag #MyElixirStatus and #ElixirLang")
Hello from twitter hashtag #MyElixirStatus and #ElixirLang
[0]: #MyElixirStatus[1]: MyElixirStatus[2]: My[3]: Status[4]: #ElixirLang[5]: ElixirLang[6]: [7]: Lang
tag => MyElixirStatus