```
contract A {
function a() public view{
}
}
```
```
contract B {
function functionNameCall(address addr) public view{
A(addr).a();
}
function rawCall(address addr) public view{
bytes4 SELECTOR = bytes4(keccak256(bytes("a()")));
(bool success, bytes memory returned...
...um.org/编译好合约，然后部署到测试网的时候， 想去etherscan验证合约，abi直接从remix复制来，验证的时候，总是提示这个错误：
Error! Invalid constructor arguments provided. Please verify that they are in ABI-encoded format
> ![|690x315, 75%](https://img.l...