Create a Sketch Map sketch from a sequence of pairs.
Create a Sketch Map sketch out of a single key/value pair.
Calculates the approximate frequency for any key.
Returns a sorted list of heavy hitter key/value tuples.
override this if there is a faster way to do this sum than reduceLeftOption on plus
override this if there is a faster way to do this sum than reduceLeftOption on plus
A zero Sketch Map is one with zero elements.
A zero Sketch Map is one with zero elements.
Responsible for creating instances of SketchMap.