split_case_benchmark

app.ex

defmodule App do
  def split_case(value) do
    # implementation in here
  end

  def run do
    for _ <- 1..1_000_000 do
      split_case("HelloWorld")
    end
  end
end

benchmark.sh

#!/usr/bin/env sh
rm -rf Elixir.App.beam
elixirc app.ex 
time elixir -e "App.run"