DifferenceEstimator 38 courgette/difference_estimator.cc class DifferenceEstimator::Base { DifferenceEstimator 61 courgette/difference_estimator.cc class DifferenceEstimator::Subject { DifferenceEstimator 73 courgette/difference_estimator.cc DifferenceEstimator::DifferenceEstimator() {} DifferenceEstimator 75 courgette/difference_estimator.cc DifferenceEstimator::~DifferenceEstimator() {