I saw this in some solidity code but don’t get what it is exactly:
(bool success, ) = msg.sender.call.value(amount)(""); require(success, "Transfer failed.");
what’s confusing me is the “(bool success, )” part.
It doesn’t look like the syntax of a variable and it doesn’t look like the syntax of a function. I get generally what it is being used FOR, but I don’t get why it is written that way or what you would even call this expression exactly.