Current section
Files
Jump to
Current section
Files
lib/hologram/commons/bitstring_utils.ex
defmodule Hologram.Commons.BitstringUtils do
@moduledoc false
@doc """
Converts a list of bits into a corresponding bitstring.
"""
@spec from_bit_list(list(1 | 0)) :: bitstring
def from_bit_list(list) do
value =
list
|> Enum.join()
|> String.to_integer(2)
size = Enum.count(list)
<<value::size(size)>>
end
@doc """
Given a bitstring returns its corresponding list of bits (starting with the most significant bit at index 0).
## Examples
iex> to_bit_list(<<25>>)
[1, 1, 0, 0, 1]
"""
@spec to_bit_list(bitstring) :: list(integer)
def to_bit_list(bitstring) do
for <<bit::1 <- bitstring>>, do: bit
end
end