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pragma solidity ^0.4.18; | |
contract Ownable { | |
address public owner; | |
function Ownable() public { | |
owner = msg.sender; | |
} | |
modifier onlyOwner() { | |
require(msg.sender == owner); | |
_; | |
} | |
function transferOwnership(address newOwner) public onlyOwner { | |
require(newOwner != address(0)); | |
owner = newOwner; | |
} | |
} |
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