发布时间: 2024-03-28 22:48:00
refer to: https://medium.com/coinmonks/exploring-the-differences-between-payable-and-non-payable-functions-in-solidity-an-in-depth-d031c6ae577b
两个参数都需要调用方支付手续费(不是view, 方法)
payable: 接收 msg.value作为参数 例如转账ETH
nonpayable : 不接收msg.value 例如调用某个合约(过程是向该合约发送0ETH)