julia

8c2bcf67 - Implement Base.fd() for TCPSocket, UDPSocket, and TCPServer (#53721)

Implement Base.fd() for TCPSocket, UDPSocket, and TCPServer (#53721) This is quite handy if you want to pass off the file descriptor to a C library. I also added a warning to the `fd()` docstring to warn folks about duplicating the file descriptor first.