pub struct Pid(_);
Expand description
Packet Identifier.
For packets with QoS::AtLeastOne
or QoS::ExactlyOnce
delivery.
#[derive(Default)]
struct Session {
pid: Pid,
}
impl Session {
pub fn next_pid(&mut self) -> Pid {
self.pid = self.pid + 1;
self.pid
}
}
let mut sess = Session::default();
assert_eq!(2, sess.next_pid().get());
assert_eq!(Pid::try_from(3).unwrap(), sess.next_pid());
The spec (MQTT-2.3.1-1, MQTT-2.2.1-3) disallows a pid of 0.
Implementations
Trait Implementations
sourceimpl Ord for Pid
impl Ord for Pid
1.21.0 · sourcefn max(self, other: Self) -> Self
fn max(self, other: Self) -> Self
Compares and returns the maximum of two values. Read more
1.21.0 · sourcefn min(self, other: Self) -> Self
fn min(self, other: Self) -> Self
Compares and returns the minimum of two values. Read more
1.50.0 · sourcefn clamp(self, min: Self, max: Self) -> Selfwhere
Self: PartialOrd<Self>,
fn clamp(self, min: Self, max: Self) -> Selfwhere
Self: PartialOrd<Self>,
Restrict a value to a certain interval. Read more
sourceimpl PartialOrd<Pid> for Pid
impl PartialOrd<Pid> for Pid
sourcefn partial_cmp(&self, other: &Pid) -> Option<Ordering>
fn partial_cmp(&self, other: &Pid) -> Option<Ordering>
1.0.0 · sourcefn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
This method tests less than or equal to (for
self
and other
) and is used by the <=
operator. Read moreimpl Copy for Pid
impl Eq for Pid
impl StructuralEq for Pid
impl StructuralPartialEq for Pid
Auto Trait Implementations
impl RefUnwindSafe for Pid
impl Send for Pid
impl Sync for Pid
impl Unpin for Pid
impl UnwindSafe for Pid
Blanket Implementations
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more