Add new `DisjointSet#isEmpty()` predicate class method (#3)

klaudiosinani / dsforest

Disjoint-set forests for ES6

MIT License

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Closed klaudiosinani closed 5 years ago

klaudiosinani commented 5 years ago

The PR introduces the following new nullary predicate method:

Determines whether the foreset contains any elements, thus any disjoint sets, returning true or false as appropriate.

Also, the corresponding TypeScript ambient declarations are included in the PR.