SFML 2 TcpSocket::Send parameter not const

[bloodust]

Why is the parameter not const in this function ?

Code: [Select]

Socket::Status TcpSocket::Send(Packet& packet)
Why is this member function not const? It does not modify the object and it returns const data.

Code: [Select]

const char* Packet::OnSend(std::size_t& size)

[Laurent]

It's not const so that derived Packet classes can implement in-place modifications, rather than being forced to copy their data on every call to Send().