Lesson 3: "send" and "transfer" are only available for objects of type "address payable", not "address".

[MartinSoka]

Hi all,
I'm following the tutorial with the latest compiler version 0.8.7. I get the following compiler error while implementing the withdraw function.

TypeError: "send" and "transfer" are only available for objects of type "address payable", not "address".
msg.sender.transfer(address(this).balance);

This was not needed with 0.6.x. Any ideas where can i find the compiler release notes/key changes where its described that i need to type cast the address ?

[cromewar]

Hello @MartinSoka the reason is because in solidity 0.8.x the payable identifier is not added automatically so the solution is this:
msg.sender.transfer(payable(address(this).balance)
Give it a try ;)

[MartinSoka]

Hey, thx for the reply.

Actually i used the following
payable (msg.sender).transfer(address(this).balance);
which worked on the end (not 100% sure if it was the correct approach tho). I also tried your suggestion but that one is not compiling (0.8.7).

But my question was more about the compiler change notes/docs, if i see other inconsistency in the future.

[cromewar]

I'm glad is solved now ;)