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operator - method
- Duration other
Subtracts other from this Duration and returns the difference as a new Duration object.
Implementation
Duration operator -(Duration other) {
  return Duration._microseconds(_duration - other._duration);
}© 2012 the Dart project authors
Licensed under the BSD 3-Clause "New" or "Revised" License.
 https://api.dart.dev/stable/2.18.5/dart-core/Duration/operator_minus.html