alexroan · April 3, 2020 12:16
diff --git a/BasicSafeMath.sol b/BasicSafeMath.sol
 pragma solidity ^0.5.5;

 import "@openzeppelin/contracts/math/SafeMath.sol";

 contract BasicSafeMath {

  using SafeMath for uint;
  
  function doSomeMath(uint _a, uint _b) public returns (uint) {
    return _a.sub(_b);
  }
 }
	pragma solidity ^0.5.5;

	import "@openzeppelin/contracts/math/SafeMath.sol";

	contract BasicSafeMath {

	using SafeMath for uint;

	function doSomeMath(uint _a, uint _b) public returns (uint) {
	return _a.sub(_b);
	}
	}