vis-kid

pragma solidity 0.5.12;

contract Struct {
    struct Todo {
        string text;
        bool completed;
    }

    Todo[] public todos;

vis-kid

pragma solidity 0.5.11;

contract Enum {
    enum Status {
        Pending,
        Shipped, 
        Accepted,
        Rejected,
        Canceled
    }

vis-kid

pragma solidity 0.8.11;

contract Persons {

    uint public peopleCounter;

    struct Person {
        string firstName;
        string lastName;
        address PersonAddress;

vis-kid

pragma solidity 0.5.11;

contract Mapping {
    mapping(address => uint) public myMap;

    function setMapping(address _address, uint _number) external {
        myMap[_address] = _number;
    }

    function getMapping(address _address) external view returns (uint) {

vis-kid

pragma solidity 0.5.11;

contract Loop {
    uint public counter;
    function loop(uint number) public {
      for (uint i = 0; i < number; i ++) {
          counter += 1;
      }
    }
}

vis-kid

pragma solidity 0.5.11;

contract Errors {
    uint public balance;
    uint public constant MAXAMOUNT = 2 ** 256 -1;

    function deposit(uint _amount) external {
        uint oldBalance = balance;
        uint newBalance = balance + _amount;
        require(newBalance >= balance, "Error");

vis-kid

pragma solidity 0.5.11;

contract A {
    string public name;

    constructor(string memory _name) public {
        name = _name;
    }
}

vis-kid

pragma solidity 0.5.11;

contract A {

  event Log(string message);

  function foo() public {
      emit Log("Contract A.foo was called");
  }

vis-kid

pragma solidity 0.8.11;

contract A {
  string public name;
  constructor(string memory _name) {
      name = _name;
  } 

}

vis-kid

pragma solidity 0.8.11;

contract Constructor {
    uint public a;
    string public b;
    address public owner;
    uint public createdAt; 

    constructor(uint _a, string memory _b) {
        a = _a;