Type Alias BitMask 

pub type BitMask<'s, 'b> = MaskedBitVec<'s, 'b, fn(u64, u64) -> u64>;

Type alias for masked bitvectors that implement a simple bitwise binary operation. The first lifetime is for the bit vector that is being masked, the second lifetime is for the mask.

Aliased Type

pub struct BitMask<'s, 'b> { /* private fields */ }