Lightning Talks – Jakub Pawlowicz
summary
Takes a database of user emails and produces a sorted list of unique characters by piping together library calls so the working solution is literally Enum.join |> String.downcase |> String.split |> Enum.uniq |> Enum.sort. Uses Elixir’s pipe operator and standard modules so every step links to its source and reveals concrete return shapes, turning lost method chaining into explicit data flow that actually works and clarifies types at each stage.
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