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October 29, 2018 23:51
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tdl coin
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pragma solidity ^0.4.25; | |
import "./ERC20.sol"; | |
contract Token is ERC20 { | |
mapping (address => uint256) balances; | |
mapping (address => mapping (address => uint256)) allowed; | |
uint256 public totalSupply; | |
function transfer(address _to, uint256 _value) returns (bool success) { | |
if (balances[msg.sender] >= _value && _value > 0) { | |
balances[msg.sender] -= _value; | |
balances[_to] += _value; | |
Transfer(msg.sender, _to, _value); | |
return true; | |
} else { return false; } | |
} | |
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) { | |
if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && _value > 0) { | |
balances[_to] += _value; | |
balances[_from] -= _value; | |
allowed[_from][msg.sender] -= _value; | |
Transfer(_from, _to, _value); | |
return true; | |
} else { return false; } | |
} | |
function balanceOf(address _owner) constant returns (uint256 balance) { | |
return balances[_owner]; | |
} | |
function approve(address _spender, uint256 _value) returns (bool success) { | |
allowed[msg.sender][_spender] = _value; | |
Approval(msg.sender, _spender, _value); | |
return true; | |
} | |
function allowance(address _owner, address _spender) constant returns (uint256 remaining) { | |
return allowed[_owner][_spender]; | |
} // end of Token contract | |
} | |
contract TDLCoin is Token { | |
function () { | |
//if ether is sent to this address, send it back. | |
throw; | |
} | |
string public name; | |
uint8 public decimals; | |
string public symbol; | |
constructor( ) { | |
// should have the same name as the contract name | |
balances[msg.sender] = 1000; // creator gets all initial tokens | |
totalSupply = 1000; // total supply of token | |
name = "TDLCoin"; // name of token | |
decimals = 0; // amount of decimals | |
symbol = "TDL"; // symbol of token | |
} | |
/* Approves and then calls the receiving contract */ | |
function approveAndCall(address _spender, uint256 _value, bytes _extraData) returns (bool success) { | |
allowed[msg.sender][_spender] = _value; | |
Approval(msg.sender, _spender, _value); | |
if(!_spender.call(bytes4(bytes32(sha3("receiveApproval(address,uint256,address,bytes)"))), msg.sender, _value, this, _extraData)) { throw; } | |
return true; | |
} | |
} | |
[ | |
{ | |
"constant": true, | |
"inputs": [], | |
"name": "name", | |
"outputs": [ | |
{ | |
"name": "", | |
"type": "string" | |
} | |
], | |
"payable": false, | |
"stateMutability": "view", | |
"type": "function" | |
}, | |
{ | |
"constant": false, | |
"inputs": [ | |
{ | |
"name": "_spender", | |
"type": "address" | |
}, | |
{ | |
"name": "_value", | |
"type": "uint256" | |
} | |
], | |
"name": "approve", | |
"outputs": [ | |
{ | |
"name": "success", | |
"type": "bool" | |
} | |
], | |
"payable": false, | |
"stateMutability": "nonpayable", | |
"type": "function" | |
}, | |
{ | |
"constant": true, | |
"inputs": [], | |
"name": "totalSupply", | |
"outputs": [ | |
{ | |
"name": "", | |
"type": "uint256" | |
} | |
], | |
"payable": false, | |
"stateMutability": "view", | |
"type": "function" | |
}, | |
{ | |
"constant": false, | |
"inputs": [ | |
{ | |
"name": "_from", | |
"type": "address" | |
}, | |
{ | |
"name": "_to", | |
"type": "address" | |
}, | |
{ | |
"name": "_value", | |
"type": "uint256" | |
} | |
], | |
"name": "transferFrom", | |
"outputs": [ | |
{ | |
"name": "success", | |
"type": "bool" | |
} | |
], | |
"payable": false, | |
"stateMutability": "nonpayable", | |
"type": "function" | |
}, | |
{ | |
"constant": true, | |
"inputs": [], | |
"name": "decimals", | |
"outputs": [ | |
{ | |
"name": "", | |
"type": "uint8" | |
} | |
], | |
"payable": false, | |
"stateMutability": "view", | |
"type": "function" | |
}, | |
{ | |
"constant": true, | |
"inputs": [ | |
{ | |
"name": "_owner", | |
"type": "address" | |
} | |
], | |
"name": "balanceOf", | |
"outputs": [ | |
{ | |
"name": "balance", | |
"type": "uint256" | |
} | |
], | |
"payable": false, | |
"stateMutability": "view", | |
"type": "function" | |
}, | |
{ | |
"constant": true, | |
"inputs": [], | |
"name": "symbol", | |
"outputs": [ | |
{ | |
"name": "", | |
"type": "string" | |
} | |
], | |
"payable": false, | |
"stateMutability": "view", | |
"type": "function" | |
}, | |
{ | |
"constant": false, | |
"inputs": [ | |
{ | |
"name": "_to", | |
"type": "address" | |
}, | |
{ | |
"name": "_value", | |
"type": "uint256" | |
} | |
], | |
"name": "transfer", | |
"outputs": [ | |
{ | |
"name": "success", | |
"type": "bool" | |
} | |
], | |
"payable": false, | |
"stateMutability": "nonpayable", | |
"type": "function" | |
}, | |
{ | |
"constant": false, | |
"inputs": [ | |
{ | |
"name": "_spender", | |
"type": "address" | |
}, | |
{ | |
"name": "_value", | |
"type": "uint256" | |
}, | |
{ | |
"name": "_extraData", | |
"type": "bytes" | |
} | |
], | |
"name": "approveAndCall", | |
"outputs": [ | |
{ | |
"name": "success", | |
"type": "bool" | |
} | |
], | |
"payable": false, | |
"stateMutability": "nonpayable", | |
"type": "function" | |
}, | |
{ | |
"constant": true, | |
"inputs": [ | |
{ | |
"name": "_owner", | |
"type": "address" | |
}, | |
{ | |
"name": "_spender", | |
"type": "address" | |
} | |
], | |
"name": "allowance", | |
"outputs": [ | |
{ | |
"name": "remaining", | |
"type": "uint256" | |
} | |
], | |
"payable": false, | |
"stateMutability": "view", | |
"type": "function" | |
}, | |
{ | |
"inputs": [], | |
"payable": false, | |
"stateMutability": "nonpayable", | |
"type": "constructor" | |
}, | |
{ | |
"payable": false, | |
"stateMutability": "nonpayable", | |
"type": "fallback" | |
}, | |
{ | |
"anonymous": false, | |
"inputs": [ | |
{ | |
"indexed": true, | |
"name": "_from", | |
"type": "address" | |
}, | |
{ | |
"indexed": true, | |
"name": "_to", | |
"type": "address" | |
}, | |
{ | |
"indexed": false, | |
"name": "_value", | |
"type": "uint256" | |
} | |
], | |
"name": "Transfer", | |
"type": "event" | |
}, | |
{ | |
"anonymous": false, | |
"inputs": [ | |
{ | |
"indexed": true, | |
"name": "_owner", | |
"type": "address" | |
}, | |
{ | |
"indexed": true, | |
"name": "_spender", | |
"type": "address" | |
}, | |
{ | |
"indexed": false, | |
"name": "_value", | |
"type": "uint256" | |
} | |
], | |
"name": "Approval", | |
"type": "event" | |
} | |
] | |
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