receiver.payable

Question

松露v5.0.5 (核心: 5.0.5)坚固度v0.5.0 (solc-js) Node v10.15.1

pragma solidity v0.5.0;


contract ApprovalContracts { 

  address public sender;   
  address public receiver; 
  address public approver = 0xc7780C9521C2C2abED69f0D65BEbF9794C55ae94;  

  function deposit(address _receiver) external payable {  

    require(msg.value >0); 
    sender = msg.sender; 
    receiver = _receiver;
  }

  function viewApprover() external pure returns(address) { 
    return(approver);
  }

  function approve() external { 
    require(msg.sender == approver); 
    receiver.payable(address(this).balance);
  }

}

receiver.payable(address(this).balance)；<-新版本中不存在传输

我一直有一个错误，那就是应付点数。

ParserError:预期标识符，但得到“应付” receiver.payable(地址(此).balance)；

不知道我做错了什么。

Answer 1

我在Remix中对此进行了修改，以确保解决方案能够编译。

当前的问题是Solity0.5.0引入了一种新类型address payable，并从address中删除了传输和发送方法。若要处理payable地址，请将变量转换为address payable。

这里：address payable public receiver;

也在这里：function deposit(address payable _receiver) external payable {

看起来，receiver.payable是一个试图解决错误的猜测。你可能想：

receiver.transfer(address(this).balance);

编译器对语用中的v并不满意。当它编译时，如下所示：

pragma solidity 0.5.0;

contract ApprovalContracts { 

  address public sender;   
  address payable public receiver; 
  address public approver = 0xc7780C9521C2C2abED69f0D65BEbF9794C55ae94;  

  function deposit(address payable _receiver) external payable {  

    require(msg.value >0); 
    sender = msg.sender; 
    receiver = _receiver;
  }

  function viewApprover() external view returns(address) { 
    return approver;
  }

  function approve() external { 
    require(msg.sender == approver); 
    receiver.transfer(address(this).balance);
  }

}

希望能帮上忙。