Contract Source Code:
pragma solidity ^0.8.18;
///SPDX-License-Identifier: MIT
///HODL the HODL
import "MEME.sol";
contract HODL is MEME {
uint256 public totalSupply;
uint256 constant private MAX_UINT256 = 2**256 - 1;
mapping (address => uint256) public balances;
mapping (address => mapping (address => uint256)) public allowed;
string public name;
uint8 public decimals;
string public symbol;
constructor (
uint256 _initialAmount,
string memory _tokenName,
uint8 _decimalUnits,
string memory _tokenSymbol
) public {
balances[msg.sender] = _initialAmount;
totalSupply = _initialAmount;
name = _tokenName;
decimals = _decimalUnits;
symbol = _tokenSymbol;
}
function transfer(address _to, uint256 _value) override public returns (bool success) {
require(balances[msg.sender] >= _value);
balances[msg.sender] -= _value;
balances[_to] += _value;
emit Transfer(msg.sender, _to, _value); //solhint-disable-line indent, no-unused-vars
return true;
}
function transferFrom(address _from, address _to, uint256 _value) override public returns (bool success) {
uint256 allowance = allowed[_from][msg.sender];
require(balances[_from] >= _value && allowance >= _value);
balances[_to] += _value;
balances[_from] -= _value;
if (allowance < MAX_UINT256) {
allowed[_from][msg.sender] -= _value;
}
emit Transfer(_from, _to, _value); //solhint-disable-line indent, no-unused-vars
return true;
}
function balanceOf(address _owner) override public view returns (uint256 balance) {
return balances[_owner];
}
function approve(address _spender, uint256 _value) override public returns (bool success) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value); //solhint-disable-line indent, no-unused-vars
return true;
}
function allowance(address _owner, address _spender) override public view returns (uint256 remaining) {
return allowed[_owner][_spender];
}
}
pragma solidity ^0.8.18;
///SPDX-License-Identifier: MIT
///HODL the HODL
interface MEME {
function balanceOf(address _owner) external view returns (uint256 balance);
function transfer(address _to, uint256 _value) external returns (bool success);
function transferFrom(address _from, address _to, uint256 _value) external returns (bool success);
function approve(address _spender, uint256 _value) external returns (bool success);
function allowance(address _owner, address _spender) external view returns (uint256 remaining);
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
}