Function arrow::buffer::bitwise_unary_op_helper

pub fn bitwise_unary_op_helper<F>(
    left: &Buffer, 
    offset_in_bits: usize, 
    len_in_bits: usize, 
    op: F
) -> Buffer where
    F: Fn(u64) -> u64, 

Apply a bitwise operation op to one input and return the result as a Buffer. The input is treated as a bitmap, meaning that offset and length are specified in number of bits.