## Uses of Class
org.apache.datasketches.hll.Union

Packages that use Union
org.apache.datasketches.hll: The DataSketches™ HLL sketch family package `HllSketch` and `Union` are the public facing classes of this high performance implementation of Phillipe Flajolet's HyperLogLog algorithm[1] but with significantly improved error behavior and important features that can be essential for large production systems that must handle massive data.

### Uses of Union in org.apache.datasketches.hll

Methods in org.apache.datasketches.hll that return Union
`static Union` Union.`heapify(byte[] byteArray)` Construct a union operator populated with the given byte array image of an HllSketch.
`static Union` Union.`heapify(org.apache.datasketches.memory.Memory mem)` Construct a union operator populated with the given Memory image of an HllSketch.
`static Union` Union.`writableWrap(org.apache.datasketches.memory.WritableMemory srcWmem)` Wraps the given WritableMemory, which must be a image of a valid updatable HLL_8 sketch, and may have data.