bnb_transfer_solidity

bnb_transfer_solidity.sol

/* event定義中的 keyword `indexed` 會被放在 topics當成參數做查詢, topics最多有四個, 第一個保留為 event的 hash值(識別用) */
event Transfer(address indexed from, address indexed to, uint256 value);

/* Send coins */
function transfer(address _to, uint256 _value) {
  if (_to == 0x0) throw;                               // Prevent transfer to 0x0 address. Use burn() instead
  if (_value <= 0) throw;
  if (balanceOf[msg.sender] < _value) throw;           // Check if the sender has enough
  if (balanceOf[_to] + _value < balanceOf[_to]) throw; // Check for overflows
    balanceOf[msg.sender] = SafeMath.safeSub(balanceOf[msg.sender], _value);              // Subtract from the sender
    balanceOf[_to] = SafeMath.safeAdd(balanceOf[_to], _value);                            // Add the same to the recipient
    Transfer(msg.sender, _to, _value);                 // Notify anyone listening that this transfer took place
  }
}