Returns an iterator to the given object in a Multi-Index table.
Parameters
obj- A reference to the desired object
Returns
An iterator to the given object
Example
#include <eosiolib/eosio.hpp>
using namespace eosio;
using namespace std;
class addressbook: contract {
struct address {
uint64_t account_name;
string first_name;
string last_name;
string street;
string city;
string state;
uint32_t zip = 0;
uint64_t primary_key() const { return account_name; }
uint64_t by_zip() const { return zip; }
EOSLIB_SERIALIZE( address, (account_name)(first_name)(last_name)(street)(city)(state)(zip) )
};
public:
addressbook(account_name self):contract(self) {}
typedef eosio::multi_index< N(address), address, indexed_by< N(zip), const_mem_fun<address, uint64_t, &address::by_zip> > address_index;
void myaction() {
address_index addresses(_self, _self); // code, scope
// add to table, first argument is account to bill for storage
addresses.emplace(payer, [&](auto& address) {
address.account_name = N(dan);
address.first_name = "Daniel";
address.last_name = "Larimer";
address.street = "1 EOS Way";
address.city = "Blacksburg";
address.state = "VA";
address.zip = 93446;
});
addresses.emplace(payer, [&](auto& address) {
address.account_name = N(brendan);
address.first_name = "Brendan";
address.last_name = "Blumer";
address.street = "1 EOS Way";
address.city = "Hong Kong";
address.state = "HK";
address.zip = 93445;
});
auto user = addresses.get(N(dan));
auto itr = address.find(N(dan));
eosio_assert(iterator_to(user) == itr, "Invalid iterator");
}
}
EOSIO_ABI( addressbook, (myaction) )