fn contains(&self, fd: FileDesc) -> bool {
        let fd: usize = fd.into();
        if fd < self.origin.len() {
            self.origin[fd]
        } else {
            false
        }
    }
/// Check to see whether `fd` is in original `FdSet`
/// Fd should be less than nfds
Check to see whether `fd` is in original `FdSet`
Fd should be less than nfds
Check to see whether ` fd ` is in original ` FdSet ` Fd should be less than nfds
fn contains(&self, fd: FileDesc) -> bool {
        let fd: usize = fd.into();
        if fd < self.origin.len() {
            self.origin[fd]
        } else {
            false
        }
    }
fn contains ( & self , fd : FileDesc ) -> bool { let fd : usize = fd . into ( ) ; if fd < self . origin . len ( ) { self . origin [ fd ] } else { false } }
Check to see whether `fd` is in original `FdSet`
Fd should be less than nfds
Check to see whether ` fd ` is in original ` FdSet ` Fd should be less than nfds
&self
fd
FileDesc
&self
fd
FileDesc