An insertion-order-preserving set.

This package provides OSet, an insertion-order-preserving set, with type class instances for Foldable and Data as well as wrappers, OSetL and OSetR, with left- and right-biased instances of Semigroup and Monoid respectively.

oset

An insertion-order-preserving set

• Mostly API-compatible with OSetordered-containers
• Adds class instance for Data
• Adds class instances for Semigroup and Monoid via OSetL and OSetR wrappers

Incompatibilities with OSet from ordered-containers

• fromList is renamed fromListL
• fromListR is introduced by analogy with fromListL

Documentation

View documentation on Hackage

Licence

MIT License.