# Uses of Class
org.apache.lucene.util.packed.PackedInts.Reader

Packages that use PackedInts.Reader
Package
Description
org.apache.lucene.util.packed
Packed integer arrays and streams.

- ## Uses of PackedInts.Reader in org.apache.lucene.util.packed

  Subclasses of PackedInts.Reader in org.apache.lucene.util.packed
  Modifier and Type
  Class
  Description
  `class`
  `GrowableWriter`
  Implements `PackedInts.Mutable`, but grows the bit count of the underlying packed ints on-demand.
  `static class`
  `PackedInts.Mutable`
  A packed integer array that can be modified.
  `static final class`
  `PackedInts.NullReader`
  A `PackedInts.Reader` which has all its values equal to 0 (bitsPerValue = 0).
  Methods in org.apache.lucene.util.packed with parameters of type PackedInts.Reader
  Modifier and Type
  Method
  Description
  `static void`
  PackedInts.`copy(PackedInts.Reader src, int srcPos, PackedInts.Mutable dest, int destPos, int len, int mem)`
  Copy `src[srcPos:srcPos+len]` into `dest[destPos:destPos+len]` using at most `mem` bytes.