提问人：manman 提问时间：2/2/2023 更新时间：2/2/2023 访问量：38
我该如何解决这个合约问题？只有 2 个功能
how can i solve this contract problem? only 2 functions
问：
我需要一个接收函数的合约，以将分数添加到关联钱包中已经存在的分数（如果存在）或以其他方式创建一个新分数（分数和地址），之后我需要一个函数来检索所有地址及其分数。如果可能的话，一个已经向你发送排名的函数，否则只有所有带有分数的地址都可以
contract ScoreTracker {
mapping(address => uint) public scores;
function addScore(address _wallet, uint _score) public {
if (scores[_wallet] == 0) {
scores[_wallet] = _score;
} else {
scores[_wallet] += _score;
}
}
function getScore(address _wallet) public view returns (uint) {
return scores[_wallet];
}
}
function getAllScores() public view returns (address[] memory, uint256[] memory) {
address[] memory addresses = new address[](scores.length);
uint256[] memory scoresList = new uint256[](scores.length);
uint256 counter = 0;
for (address; scores) {
addresses[counter] = a;
scoresList[counter] = scores[a];
counter++;
}
return (addresses, scoresList);
}
我已经尽力了。但不知道我该怎么做
答：
0赞
johnny 5
2/2/2023
#1
你需要一些东西。
Solidity 无法枚举映射，因此您需要创建钱包到索引的映射。您还需要将其递增 1，以便判断是否已添加钱包。
mapping(address => uint) public walletIndexIncrementedMap;
WalletScores[] scores;
struct WalletScores {
adddress wallet;
uint256 score;
}
function getOrAddWalletScore(address _wallet, uint256 score) public {
uint256 incrementedIndex = walletIndexIncrementedMap[_wallet];
if(0 == incrementedIndex) {
WalletScore storage walletScore = scores.push();
incrementedIndex = scores.length;
walletIndexIncrementedMap[_wallet] = incrementedIndex;
walletScore.wallet = _wallet;
walletScore.score = score;
return;
}
WalletScore storage walletScore = scores[incrementedIndex - 1];
walletScore.score += score;
}
function getAllScores() public returns (WalletScores[] memory walletScores)
{
return scores;
}
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