Function count

count<T>(source, options?): number
Returns a promise that represents how many elements in the specified iterable sequence satisfy a condition otherwise, the number of items in the sequence.
Type Parameters
- T
  
  The type of elements in the source collection.
Parameters
- source: Iterable<T>
  
  An iterable sequence that contains elements to be counted.
- Optional options: OptionalFindOptions<T>
  
  The options for a predicate for filtering and thisArg for binding.
Returns number
The number of matching elements for the given condition if provided, otherwise the number of elements in the sequence.
- Defined in iterable/count.ts:13

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