Quick elixir benchmark

filter_bench.exs

# in bench/filter_bench.exs
defmodule FilterBench do
  use Benchfella
  
  @map (1..1000) |> Enum.map(fn(idx) -> {idx, Integer.to_string(idx)} end) |> Enum.into(%{})

  bench "anonymous function" do
    Enum.filter(@map, fn {k, _v} -> k > 10 end)
  end

  def filter_10({k, _v}), do: k > 10

  bench "module function" do
    Enum.filter(@map, &filter_10/1)
  end
end

output.txt

chris@gairmi % mix bench
Settings:
  duration:      1.0 s

## FilterBench
[00:16:12] 1/2: module function
[00:16:14] 2/2: anonymous function

Finished in 3.31 seconds

## FilterBench
anonymous function       10000   142.22 µs/op
module function          10000   155.62 µs/op