├── readme.md
└── Contract-1-Todo-App
    ├── readme.md
    └── todoContract.sol


/readme.md:
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1 | # Solidity Smart Contract
2 | 
3 | ## Contract No: 1 ( Todo-App-Smart-Contract )
4 | 


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/Contract-1-Todo-App/readme.md:
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 1 | # TodoList Smart Contract
 2 | 
 3 | This is a sample smart contract written in Solidity language for a simple todo list. It allows you to create tasks and mark them as completed.
 4 | 
 5 | ## Functions
 6 | 
 7 | ### `createTask(string memory _content)`
 8 | 
 9 | This function creates a new task with the given content and adds it to the todo list.
10 | 
11 | ### `toggleCompleted(uint _id)`
12 | 
13 | This function toggles the completed status of a task with the given ID.
14 | 
15 | ## Events
16 | 
17 | ### `TaskCreated(uint id, string content, bool completed)`
18 | 
19 | This event is emitted when a new task is created.
20 | 
21 | ### `TaskCompleted(uint id, bool completed)`
22 | 
23 | This event is emitted when the completed status of a task is toggled.
24 | 
25 | ## License
26 | 
27 | This smart contract is licensed under the MIT License.
28 | 
29 | <hr>
30 | 
31 | made with &#128151; by "Mubashir Alam".
32 | 


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/Contract-1-Todo-App/todoContract.sol:
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 1 | // SPDX-License-Identifier: MIT
 2 | pragma solidity ^0.8.0;
 3 | 
 4 | contract TodoList {
 5 |     uint public taskCount = 0;
 6 | 
 7 |     struct Task {
 8 |         uint id;
 9 |         string content;
10 |         bool completed;
11 |     }
12 | 
13 |     mapping(uint => Task) public tasks;
14 | 
15 |     event TaskCreated(uint id, string content, bool completed);
16 |     event TaskCompleted(uint id, bool completed);
17 | 
18 |     constructor() {
19 |         createTask("Example task");
20 |     }
21 | 
22 |     function createTask(string memory _content) public {
23 |         taskCount ++;
24 |         tasks[taskCount] = Task(taskCount, _content, false);
25 |         emit TaskCreated(taskCount, _content, false);
26 |     }
27 |     function toggleCompleted(uint _id) public {
28 |         Task memory _task = tasks[_id];
29 |         _task.completed = !_task.completed;
30 |         tasks[_id] = _task;
31 |         emit TaskCompleted(_id, _task.completed);
32 |     }
33 | 
34 | }


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