Function spy

spy<T, TAhead>(ahead?): ((arg: T) => [Tuple<IterSource<T>, TAhead>, IterableIterator<IterSource<T>>])
Returns a 2 length tuple containing the head of the input iterator and a new iterator containing the same values as iterator.
Type Parameters
- T extends IteratorOrIterable<unknown>
- TAhead extends number = 1
Parameters
- Optionalahead: TAhead
Returns ((arg: T) => [Tuple<IterSource<T>, TAhead>, IterableIterator<IterSource<T>>])
- - (arg): [Tuple<IterSource<T>, TAhead>, IterableIterator<IterSource<T>>]
  - Parameters
    - arg: T
    Returns [Tuple<IterSource<T>, TAhead>, IterableIterator<IterSource<T>>]
- Defined in spy.ts:10
spy<T, TAhead>(iterator, ahead?): [Tuple<IterSource<T>, TAhead>, IterableIterator<IterSource<T>>]
Type Parameters
- T extends IteratorOrIterable<unknown>
- TAhead extends number = 1
Parameters
- iterator: T
- Optionalahead: TAhead
Returns [Tuple<IterSource<T>, TAhead>, IterableIterator<IterSource<T>>]
- Defined in spy.ts:13