11 lines
336 B
Text
11 lines
336 B
Text
defmodule LineReader do
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def get_line(filename, line) do
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File.stream!(filename)
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|> Stream.with_index
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|> Stream.filter(fn {_value, index} -> index == line-1 end)
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|> Enum.at(0)
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|> print_line
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end
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defp print_line({value, _line_number}), do: String.trim(value)
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defp print_line(_), do: {:error, "Invalid Line"}
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end
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