Struct `NoSubscriber`

struct NoSubscriber(_)

A no-op Subscriber.

NoSubscriber implements the Subscriber trait by never being enabled, never being interested in any callsite, and dropping all spans and events.

Implementations

`impl NoSubscriber`

const fn new() -> Self: Returns a new NoSubscriber.

`impl Clone for NoSubscriber`

fn clone(self: &Self) -> NoSubscriber

`impl Copy for NoSubscriber`

`impl Debug for NoSubscriber`

fn fmt(self: &Self, f: &mut Formatter<'_>) -> Result

`impl Default for NoSubscriber`

fn default() -> NoSubscriber

`impl Freeze for NoSubscriber`

`impl RefUnwindSafe for NoSubscriber`

`impl Send for NoSubscriber`

`impl Subscriber for NoSubscriber`

fn register_callsite(self: &Self, _: &'static Metadata<'static>) -> Interest
fn new_span(self: &Self, _: &Attributes<'_>) -> Id
fn event(self: &Self, _event: &Event<'_>)
fn record(self: &Self, _span: &Id, _values: &Record<'_>)
fn record_follows_from(self: &Self, _span: &Id, _follows: &Id)
fn enabled(self: &Self, _metadata: &Metadata<'_>) -> bool
fn enter(self: &Self, _span: &Id)
fn exit(self: &Self, _span: &Id)

`impl Sync for NoSubscriber`

`impl Unpin for NoSubscriber`

`impl UnsafeUnpin for NoSubscriber`

`impl UnwindSafe for NoSubscriber`

`impl<T> Any for NoSubscriber`

fn type_id(self: &Self) -> TypeId

`impl<T> Borrow for NoSubscriber`

fn borrow(self: &Self) -> &T

`impl<T> BorrowMut for NoSubscriber`

fn borrow_mut(self: &mut Self) -> &mut T

`impl<T> CloneToUninit for NoSubscriber`

unsafe fn clone_to_uninit(self: &Self, dest: *mut u8)

`impl<T> From for NoSubscriber`

fn from(t: T) -> T: Returns the argument unchanged.

`impl<T> ToOwned for NoSubscriber`

fn to_owned(self: &Self) -> T
fn clone_into(self: &Self, target: &mut T)

`impl<T, U> Into for NoSubscriber`

fn into(self: Self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

`impl<T, U> TryFrom for NoSubscriber`

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

`impl<T, U> TryInto for NoSubscriber`

fn try_into(self: Self) -> Result<U, <U as TryFrom<T>>::Error>