peekIndexed()

Peek at each element of the stream along with its zero-based index

Implementation Notes

Signature

peekIndexed(BiConsumer<Long, INPUT> peekingFunction)

peekingFunction - A non-null consumer to receive each element and its zero-based index.

Examples

Map with index

Stream
    .of("A", "B", "C", "D")
    .gather(
        Gatherers4j.peekIndexed(
            (index, element) -> System.out.println("Element " + element + " at index " + index)
        )
     )
     .toList();

// Returns: [A B C D]
// Prints:
//   Element A at index 0
//   Element B at index 1
//   Element C at index 2
//   Element D at index 3