# Method Calendar.TimeRanges.TimeRange()->subtract()

Method subtract

  ``TimeRange` subtract(`TimeRange` `what`)`

Description

  This subtracts a period of time from another;

      >- the past          the future -<
      |-------called-------|
           |-------other--------|
      <---->  <- called->subtract(other)

      |-------called-------|
           |---third---|
      <---->           <---> <- called->subtract(third)