├── README.md
└── Str


/README.md:
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1 | # Structs


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/Str:
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 1 | // SPDX-License-Identifier: MIT
 2 | pragma solidity ^0.8.17;
 3 | 
 4 | /**
 5 |  * @title GarageManager
 6 |  * @dev Contract to manage a garage of cars for each user
 7 |  */
 8 | contract GarageManager {
 9 |     // Mapping to store the garage of cars for each user
10 |     mapping(address => Car[]) private garages;
11 | 
12 |     // Struct to represent a car
13 |     struct Car {
14 |         string make; // Make of the car
15 |         string model; // Model of the car
16 |         string color; // Color of the car
17 |         uint numberOfDoors; // Number of doors of the car
18 |     }
19 | 
20 |     // Custom error for handling invalid car index
21 |     error BadCarIndex(uint256 index);
22 | 
23 |     /**
24 |      * @dev Adds a new car to the caller's garage
25 |      * @param _make The make of the car
26 |      * @param _model The model of the car
27 |      * @param _color The color of the car
28 |      * @param _numberOfDoors The number of doors of the car
29 |      */
30 |     function addCar(string memory _make, string memory _model, string memory _color, uint _numberOfDoors) external {
31 |         // Push a new car struct with the provided details to the caller's garage
32 |         garages[msg.sender].push(Car(_make, _model, _color, _numberOfDoors));
33 |     }
34 | 
35 |     /**
36 |      * @dev Retrieves the caller's array of cars
37 |      * @return An array of `Car` structs
38 |      */
39 |     function getMyCars() external view returns (Car[] memory) {
40 |         // Return the array of cars stored in the caller's garage
41 |         return garages[msg.sender];
42 |     }
43 | 
44 |     /**
45 |      * @dev Retrieves a specific user's array of cars
46 |      * @param _user The address of the user
47 |      * @return An array of `Car` structs
48 |      */
49 |     function getUserCars(address _user) external view returns (Car[] memory) {
50 |         // Return the array of cars stored in the garage of the specified user
51 |         return garages[_user];
52 |     }
53 | 
54 |     /**
55 |      * @dev Updates a specific car in the caller's garage
56 |      * @param _index The index of the car in the garage array
57 |      * @param _make The new make of the car
58 |      * @param _model The new model of the car
59 |      * @param _color The new color of the car
60 |      * @param _numberOfDoors The new number of doors of the car
61 |      */
62 |     function updateCar(uint256 _index, string memory _make, string memory _model, string memory _color, uint _numberOfDoors) external {
63 |         // Check if the provided index is valid
64 |         if (_index >= garages[msg.sender].length) {
65 |             revert BadCarIndex({index: _index}); // Revert with custom error if the index is invalid
66 |         }
67 |         // Update the specified car with the new details
68 |         garages[msg.sender][_index] = Car(_make, _model, _color, _numberOfDoors);
69 |     }
70 | 
71 |     /**
72 |      * @dev Deletes all cars in the caller's garage
73 |      */
74 |     function resetMyGarage() external {
75 |         // Delete all cars from the caller's garage
76 |         delete garages[msg.sender];
77 |     }
78 | }
79 | 


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