Package it.unimi.dsi.big.webgraph

Interface LazyLongIterator

All Known Subinterfaces:
ArcLabelledNodeIterator.LabelledArcIterator, LazyLongSkippableIterator
All Known Implementing Classes:
AbstractLazyLongIterator, BitStreamArcLabelledImmutableGraph.BitStreamLabelledArcIterator, EFGraph.EliasFanoSuccessorReader, LongIntervalSequenceIterator, MaskedLongIterator, MergedLongIterator
public interface LazyLongIterator
A lazy iterator over longs.

An instance of this class represent a (skippable) iterator over longs. The iterator is exhausted when an implementation-dependent special marker is returned. This fully lazy architecture halves the number of method calls w.r.t. Java's eager iterators.

  • Method Summary

    Modifier and Type
    Method
    Description
    long
    nextLong()
    The next long returned by this iterator, or the special marker if this iterator is exhausted.
    long
    skip(long n)
    Skips a given number of elements.

  • Method Details

    • nextLong

      long nextLong()
      The next long returned by this iterator, or the special marker if this iterator is exhausted.
      Returns:
      next long returned by this iterator, or the special marker if this iterator is exhausted.

    • skip

      long skip(long n)
      Skips a given number of elements.
      Parameters:
      n - the number of elements to skip.
      Returns:
      the number of elements actually skipped (which might be less than n if this iterator is exhausted).