# Tally - Tally -- difference of tallies

## Synopsis

• Operator: -
• Usage:
x - y
• Inputs:
• x,
• y,
• Outputs:
• , the difference of the two tallies

## Description

The count associated to an item i in the result is the difference of the counts in x and in y if it's positive, otherwise, zero.
 i1 : tally {a,a,b,c} - tally {c,d,d} o1 = Tally{a => 2} b => 1 o1 : Tally