सॉलिडिटी से अन्य अनुबंधों के साथ इंटरैक्ट करें

1pragma solidity 0.5.17;
2
3contract Counter {
4
5    uint256 private _count;
6    address private _owner;
7    address private _factory;
8
9
10     modifier onlyOwner(address caller) {
11        require(caller == _owner, "आप अनुबंध के मालिक नहीं हैं");
12        _;
13    }
14
15    modifier onlyFactory() {
16        require(msg.sender == _factory, "आपको फ़ैक्टरी का उपयोग करने की आवश्यकता है");
17        _;
18    }
19
20     constructor(address owner) public {
21        _owner = owner;
22        _factory = msg.sender;
23    }
24
25     function getCount() public view returns (uint256) {
26        return _count;
27    }
28
29    function increment(address caller) public onlyFactory onlyOwner(caller) {
30        _count++;
31    }
32
33}
सभी दिखाएँकॉपी करें

1mapping(address => Counter) _counters;
कॉपी करें

1  function createCounter() public {
2      require (_counters[msg.sender] == Counter(0));
3      _counters[msg.sender] = new Counter(msg.sender);
4  }
कॉपी करें

1function getCount(address account) public view returns (uint256) {
2    require (_counters[account] != Counter(0));
3    return (_counters[account].getCount());
4}
5
6function getMyCount() public view returns (uint256) {
7    return (getCount(msg.sender));
8}
कॉपी करें

1function increment() public {
2      require (_counters[msg.sender] != Counter(0));
3      Counter(_counters[msg.sender]).increment(msg.sender);
4  }
कॉपी करें

1pragma solidity 0.5.17;
2
3contract Counter {
4
5    uint256 private _count;
6    address private _owner;
7    address private _factory;
8
9
10     modifier onlyOwner(address caller) {
11        require(caller == _owner, "आप अनुबंध के मालिक नहीं हैं");
12        _;
13    }
14
15    modifier onlyFactory() {
16        require(msg.sender == _factory, "आपको फ़ैक्टरी का उपयोग करने की आवश्यकता है");
17        _;
18    }
19
20     constructor(address owner) public {
21        _owner = owner;
22        _factory = msg.sender;
23    }
24
25     function getCount() public view returns (uint256) {
26        return _count;
27    }
28
29    function increment(address caller) public onlyFactory onlyOwner(caller) {
30        _count++;
31    }
32
33}
34
35contract CounterFactory {
36
37    mapping(address => Counter) _counters;
38
39    function createCounter() public {
40        require (_counters[msg.sender] == Counter(0));
41        _counters[msg.sender] = new Counter(msg.sender);
42    }
43
44    function increment() public {
45        require (_counters[msg.sender] != Counter(0));
46        Counter(_counters[msg.sender]).increment(msg.sender);
47    }
48
49    function getCount(address account) public view returns (uint256) {
50        require (_counters[account] != Counter(0));
51        return (_counters[account].getCount());
52    }
53
54    function getMyCount() public view returns (uint256) {
55        return (getCount(msg.sender));
56    }
57
58}
सभी दिखाएँकॉपी करें