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added a comment for the approveAndCall interface #38

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added a comment for the approveAndCall interface #38

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4 changes: 4 additions & 0 deletions contracts/MiniMeToken.sol
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,10 @@ pragma solidity ^0.4.18;
import "./Controlled.sol";
import "./TokenController.sol";

/// @dev The contract being approved must have `receiveApproval()` for
/// `approveAndCall()` to work; adding this contract is needed to encode the
/// `_data` corectly for execution (in older versions, the pointer was left
/// out)
contract ApproveAndCallFallBack {
function receiveApproval(address from, uint256 _amount, address _token, bytes _data) public;
}
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