-GHIT::GHIT(string root, string postfix, string group): HIT(root, postfix) {
+GHIT::GHIT(const string& root, const string& postfix, const string& group):
+ HIT(root, postfix) {
#ifdef DEBUG
cerr << "In GHIT::GHIT(root = '" << root << "', postfix = '" << postfix
<< "', group = '" << group << "');" << endl;
#ifdef DEBUG
cerr << "In GHIT::GHIT(root = '" << root << "', postfix = '" << postfix
<< "', group = '" << group << "');" << endl;