Please see the README on GitHub at https://github.com/andrewthad/non-empty-containers#readme.

Please see the README on GitHub at https://github.com/andrewthad/non-empty-containers#readme

non-empty-containers

non-empty-containers provides two new data structures, NonEmptyMap and NonEmptySet, by extending Haskell's built-in Map and Set data structures.

Both structures are guaranteed to contain at least one element.