NetAddr.apply_mask

You're seeing just the function apply_mask, go back to NetAddr module for more information.
Link to this function

apply_mask(address, mask)

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Specs

apply_mask(binary(), binary()) :: binary()

Bitwise ANDs two address binaries, returning the result.

Examples

iex> NetAddr.apply_mask <<192,0,2,1>>, <<255,255,255,0>>
<<192, 0, 2, 0>>

iex> NetAddr.apply_mask <<192,0,2,1>>, <<14,249,150,22>>
<<0,0,2,0>>