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defmodule Extras do
@moduledoc """
Hosts utility functions intended to supplement the standard library.
"""
@doc """
Return an ascending range starting at `a` and ending at `b` (exclusive).
## Examples
iex> Extras.range(2, 5)
[2, 3, 4]
"""
def range(a, b) do
if b <= a do
[]
else
[a] ++ range(a + 1, b)
end
end
end
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