Function countDistinct

countDistinct<T>(itr: Iterable<T>, map?: (item: T) => any): number
Count the number of distinct entries i the specified array, optionally provide a map function that returns the value making an object unique.
Type Parameters
- T
Parameters
- itr: Iterable<T>
  iterable object or array
- Optionalmap: (item: T) => any
  unique key fn
Returns number
- Defined in packages/util/src/collection.ts:63