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Elixir: 与えられた数値の指定されたビットの値を読み出す
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| import Bitwise | |
| @doc """ | |
| 与えられた数値の指定されたビットの値を読み出す | |
| ### Example | |
| ``` | |
| iex> bit_at(42, 3) | |
| true | |
| ``` | |
| """ | |
| @spec bit_at(non_neg_integer, non_neg_integer) :: boolean | |
| def bit_at(uint8, at) when (uint8 &&& 1 <<< at) == 0, do: false | |
| def bit_at(_, _), do: true |
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