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ew-keyword-exercise.sol
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ew-keyword-exercise.sol
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https://docs.base.org/base-camp/docs/new-keyword/new-keyword-exercise/
Deploy Contract, switch to AdressBookFactory, deploy also, copy this contract ID
CODE:
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/access/Ownable.sol";
contract AddressBook is Ownable {
struct Contact {
uint id;
string firstName;
string lastName;
uint[] phoneNumbers;
}
Contact[] private contacts;
mapping(uint => uint) private idToIndex;
uint private nextId = 1;
event ContactAdded(uint indexed id, string firstName, string lastName, uint[] phoneNumbers);
event ContactDeleted(uint indexed id);
constructor(address initialOwner) Ownable(initialOwner) {}
function addContact(string calldata firstName, string calldata lastName, uint[] calldata phoneNumbers) external onlyOwner {
contacts.push(Contact(nextId, firstName, lastName, phoneNumbers));
idToIndex[nextId] = contacts.length - 1;
emit ContactAdded(nextId, firstName, lastName, phoneNumbers);
nextId++;
}
function deleteContact(uint id) external onlyOwner {
uint index = idToIndex[id];
require(index < contacts.length && contacts[index].id == id, "ContactNotFound");
emit ContactDeleted(id);
if (index < contacts.length - 1) {
contacts[index] = contacts[contacts.length - 1];
idToIndex[contacts[index].id] = index;
}
contacts.pop();
delete idToIndex[id];
}
function getContact(uint id) external view returns (Contact memory) {
uint index = idToIndex[id];
require(index < contacts.length && contacts[index].id == id, "ContactNotFound");
return contacts[index];
}
function getAllContacts() external view returns (Contact[] memory) {
return contacts;
}
}
contract AddressBookFactory {
event AddressBookDeployed(address indexed owner, address indexed addressBook);
function deploy() external returns (address) {
AddressBook newAddressBook = new AddressBook(msg.sender);
emit AddressBookDeployed(msg.sender, address(newAddressBook));
return address(newAddressBook);
}
}