Store addresses in bytes variable

Question

I need help with storing a bytes value.

contract StoreBytes {
    bytes public addresses;
    function addMe() external {
        // TODO Add msg.sender to addresses.
    }
}

What I want is that msg.sender is added to addresses, basically addresses to be a chain of addresses. Example: If 0x0000000000000000000000000000000000000000 calls addMe() and then 0x1230000000000000000000000000000000000000, addresses would look like: 0x00000000000000000000000000000000000000001230000000000000000000000000000000000000.

I don't know why I can't fix this :D.

I really appreciate your help.

Answer 1

Agree with Alex that what you're asking is a bit suspicious and there may be a better way to achieve whatever you're doing. But since this is a Q/A forum and not a product review...

try:

abi.encodePacked(addresses, msg.sender)