Struct HyperLogLogV2 

pub struct HyperLogLogV2 { /* private fields */ }

HyperLogLog cardinality estimator with 2^b registers.

Implementations

impl HyperLogLogV2

pub fn new(b: u8) -> Self

Create a new HLL with b bits of precision (b in 4..=16).

pub fn add(&mut self, item: u64)

Add an element to the estimator.

pub fn count(&self) -> u64

Estimate the cardinality.

pub fn precision(&self) -> u8

Precision bits.

pub fn num_registers(&self) -> usize

Number of registers.

pub fn merge(&mut self, other: &HyperLogLogV2)

Merge another HLL into this one (must have same precision).