Juwonlo

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

contract SimpleStorage {
    uint256 public storedData;

    event ValueChanged(uint256 newValue);

    constructor(uint256 _initialValue) {

Juwonlo

// SPDX-License-Identifier: GPL-3.0

pragma solidity ^0.5.9;

import "@0x/contracts-erc20/contracts/src/ERC20Token.sol";

/**
 * @title SampleERC20
 * @dev Create a sample ERC20 standard token