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Merge pull request #151 from AragonOne/clarity

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Add clarifying comment to standard token transfer from function
This commit is contained in:
Manuel Aráoz
2017-03-01 17:16:15 -03:00
committed by GitHub
parent 8cd58303f9 b9257a1092
commit 5e50090da0
1 changed files with 4 additions and 1 deletions
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5
contracts/token/StandardToken.sol
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@ -26,7 +26,10 @@ contract StandardToken is ERC20, SafeMath {
function transferFrom(address _from, address _to, uint _value) returns (bool success) {
var _allowance = allowed[_from][msg.sender];
// Check is not needed because safeSub(_allowance, _value) will already throw if this condition is not met
// if (_value > _allowance) throw;
balances[_to] = safeAdd(balances[_to], _value);
balances[_from] = safeSub(balances[_from], _value);
allowed[_from][msg.sender] = safeSub(_allowance, _value);