The Frequency
trait represents types that keep track of the
observed counts of items. The BTreeMapFrequency
type
is a frequency counter backed by a BTreeMap
.
Usage
Add frequency
and frequency-btreemap
to your Cargo.toml
:
[dependencies]
frequency = "^1.0.0"
frequency-btreemap = "^1.0.0"
Import both Frequency
and
BTreeMapFrequency
:
extern crate frequency;
extern crate frequency_btreemap;
use frequency::Frequency;
use frequency_btreemap::BTreeMapFrequency;