int main6() { #if 0 // read in the name from a user, which we want to search cout << " enter name"; string name; cin>> name; // change 'findMatchingAddress' to 'find' // notice that the lambda function uses the the variable 'name' // global_address_book.findMatchingAddresses ( [&] (const string& addr) { return addr.find( name ) != string::npos; } ); global_address_book.find ( [&] (const string& addr) { return addr.find( name ) != string::npos; } ); // error: ‘class AddressBook’ has no member named ‘find’ // global_address_book.find( [&] (const string& addr) { return addr.length() >= min_len; } ); // ^ int min_len = 0; cout << " enter min_len"; cin >> min_len; // change 'findMatchingAddress' to 'find' global_address_book.find( [&] (const string& addr) { return addr.length() >= min_len; } ); // error: ‘class AddressBook’ has no member named ‘find’ // global_address_book.find( [&] (const string& addr) { return addr.length() >= min_len; } ); // ^ cout << "\n"; #endif return 0; } // main6
vector<string> findAddressesFromOrgs () { // change 'findMatchingAddress' to 'find' // return global_address_book.findMatchingAddresses return global_address_book.find ( // we're declaring a lambda here; the [] signals the start [] (const string& addr) { return addr.find( ".org" ) != string::npos; } ); }