## org.apache.lucene.util.packed
Interface PackedInts.Mutable

All Superinterfaces:
  PackedInts.Reader

All Known Implementing Classes:
  GrowableWriter

Enclosing class:
  PackedInts

    public static interface PackedInts.Mutable

extends PackedInts.Reader

A packed integer array that can be modified.

NOTE: This API is for internal purposes only and might change in incompatible ways in the next release.

Method Summary
`void` `clear()` Sets all values to 0.
`void` `fill(int fromIndex, int toIndex, long val)` Fill the mutable from `fromIndex` (inclusive) to `toIndex` (exclusive) with `val`.
`void` `save(DataOutput out)` Save this mutable into `out`.
`void` `set(int index, long value)` Set the value at the given index in the array.
`int` `set(int index, long[] arr, int off, int len)` Bulk set: set at least one and at most `len` longs starting at `off` in `arr` into this mutable, starting at `index`.

Methods inherited from interface org.apache.lucene.util.packed.PackedInts.Reader
`get, get, getArray, getBitsPerValue, hasArray, ramBytesUsed, size`

Method Detail

### set

    void set(int index,
             long value)

  Set the value at the given index in the array.

  Parameters:
    `index` - where the value should be positioned.
    `value` - a value conforming to the constraints set by the array.

### set

    int set(int index,
            long[] arr,
            int off,
            int len)

  Bulk set: set at least one and at most `len` longs starting at `off` in `arr` into this mutable, starting at `index`. Returns the actual number of values that have been set.

### fill

    void fill(int fromIndex,
              int toIndex,
              long val)

  Fill the mutable from `fromIndex` (inclusive) to `toIndex` (exclusive) with `val`.

### clear

    void clear()

  Sets all values to 0.

### save

    void save(DataOutput out)
              throws IOException

  Save this mutable into `out`. Instantiating a reader from the generated data will return a reader with the same number of bits per value.

  Throws:
    `IOException`

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