Function get_fd_mut

crates/stdlib/src/select.rs:415–417

(fds: &mut [pollfd], fd: i32)

        }

        fn get_fd_mut(fds: &mut [pollfd], fd: i32) -> Option<&mut pollfd> {
            search(fds, fd).ok().map(move |i| &mut fds[i])
        }

        fn remove_fd(fds: &mut Vec<pollfd>, fd: i32) -> Option<pollfd> {
            search(fds, fd).ok().map(|i| fds.remove(i))