C++ asterisk asterisk operator

Question

I have never seen this operation done before in any languages, since this is a symbol google makes it hard to search.

What does ** mean ?

sf::TcpSocket& client = **it;

Answer 1

It's dereferencing a pointer to a pointer, in order to get to the original sf:TcpSocket.

It's just two * operators in a row.

In this case, you could also write:

// Given sf::TcpSocket **it;
sf::TcpSocket *tmp = *it; // Dereference once
sf::TcpSocket& client = *tmp;