Method DeleteDeadSamples

deps/tesseract/classify/trainingsampleset.cpp:572–577

Deletes all samples with zero features marked by KillSample.

// Deletes all samples with zero features marked by KillSample.
void TrainingSampleSet::DeleteDeadSamples() {
  samples_.compact(
      NewPermanentTessCallback(this, &TrainingSampleSet::DeleteableSample));
  num_raw_samples_ = samples_.size();
  // Samples must be re-organized now we have deleted a few.
}

// Callback function returns true if the given sample is to be deleted, due
// to having a negative classid.