Documentation forAppOptics

Function: subtract(set[2])

Takes a set of precisely 2 series. Uses the first (set[0]) as the minuend and the second (set[1]) as the subtrahend to generate a difference series (i.e. set[0] - set[1]) as the return value.

      sum(s("foo",{"@host": "prod.web*"})),
      sum(s("bar",{"@host": "prod.web*"}))

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