└── SimpleStorage.sol


/SimpleStorage.sol:
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 1 | // SPDX-License-Identifier: MIT
 2 | 
 3 | pragma solidity >=0.6.0 <0.9.0;
 4 | 
 5 | contract SimpleStorage {
 6 | 
 7 |     uint256 favoriteNumber;
 8 | 
 9 |     // This is a comment!
10 |     struct People {
11 |         uint256 favoriteNumber;
12 |         string name;
13 |     }
14 | 
15 |     People[] public people;
16 |     mapping(string => uint256) public nameToFavoriteNumber;
17 | 
18 |     function store(uint256 _favoriteNumber) public {
19 |         favoriteNumber = _favoriteNumber;
20 |     }
21 |     
22 |     function retrieve() public view returns (uint256){
23 |         return favoriteNumber;
24 |     }
25 | 
26 |     function addPerson(string memory _name, uint256 _favoriteNumber) public {
27 |         people.push(People(_favoriteNumber, _name));
28 |         nameToFavoriteNumber[_name] = _favoriteNumber;
29 |     }
30 | }
31 | 
32 | 


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