# Module collections

Expand description

Data structures useful for font work.

## Modules§

int_set
  A fast, efficient, sparse, & ordered unsigned integer (u32) bit set which is invertible.

## Structs§

IntSet
  A fast & efficient invertible ordered set for small (up to 32-bit) unsigned integer types.
RangeSet
  A set of disjoint ranges over numeric types.
U32Set
  A fast, efficient, sparse, & ordered `u32` set.