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defmodule Util.Integer do
@spec parse!(binary) :: integer
def parse!(binary) do
{integer, _remainder} = Integer.parse(binary)
integer
end
end
defmodule Util.Input do
@spec read_text(binary) :: binary
def read_text(filename) do
File.read!("data/#{filename}.txt")
end
@spec read_lines(binary) :: [binary]
def read_lines(filename) do
filename |> read_text() |> String.split()
end
@spec read_numbers(binary) :: [integer]
def read_numbers(filename) do
filename
|> read_lines()
|> Enum.map(&Util.Integer.parse!/1)
end
end
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