Method contains

crates/stdlib/src/select.rs:159–161

(&mut self, fd: RawFd)

    }

    pub fn contains(&mut self, fd: RawFd) -> bool {
        unsafe { platform::FD_ISSET(fd, self.0.as_mut_ptr()) }
    }

    pub fn clear(&mut self) {
        unsafe { platform::FD_ZERO(self.0.as_mut_ptr()) };