Method clear

src/data/info_parser.cc:4–8

namespace PS {

void InfoParser::clear() {
  for (int i = 0; i < kSlotIDmax; ++i) slot_info_[i].Clear();
  info_.Clear();
  num_ex_ = 0;
}

bool InfoParser::add(const Example& ex) {
  for (int i = 0; i < ex.slot_size(); ++i) {