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TryRecvError

rama::futures::channel::mpsc

Enum TryRecvError 

pub enum TryRecvError {
    Empty,
    Closed,
}
Expand description

Error returned by Receiver::try_recv or UnboundedReceiver::try_recv.

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Empty

The channel is empty but not closed.

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Closed

The channel is empty and closed.

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impl TryRecvError

pub fn is_empty(&self) -> bool

Returns true if the channel is empty but not closed.

pub fn is_closed(&self) -> bool

Returns true if the channel is empty and closed.

Trait Implementations§

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impl Clone for TryRecvError

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fn clone(&self) -> TryRecvError

Returns a duplicate of the value. Read more
1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for TryRecvError

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

Formats the value using the given formatter. Read more
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impl Display for TryRecvError

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

Formats the value using the given formatter. Read more
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impl Error for TryRecvError

1.30.0 · Source§

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any. Read more
1.0.0 · Source§

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()
Read more
1.0.0 · Source§

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
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fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type-based access to context intended for error reports. Read more
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impl PartialEq for TryRecvError

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fn eq(&self, other: &TryRecvError) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Copy for TryRecvError

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impl Eq for TryRecvError

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impl StructuralPartialEq for TryRecvError

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<'a, T, E> AsTaggedExplicit<'a, E> for T
where T: 'a,

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fn explicit(self, class: Class, tag: u32) -> TaggedParser<'a, Explicit, Self, E>

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impl<'a, T, E> AsTaggedImplicit<'a, E> for T
where T: 'a,

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fn implicit( self, class: Class, constructed: bool, tag: u32, ) -> TaggedParser<'a, Implicit, Self, E>

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Error> ErrorExt for Error
where Error: Into<Box<dyn Error + Send + Sync>>,

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fn into_box_error(self) -> Box<dyn Error + Send + Sync>

Return self as BoxError without additional context.
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fn into_opaque_error(self) -> OpaqueError

Return self as OpaqueError without additional context. Read more
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fn context<M>(self, value: M) -> Box<dyn Error + Send + Sync>
where M: Debug + Display + Send + Sync + 'static,

Wrap the error in a context.
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fn context_hex<M>(self, value: M) -> Box<dyn Error + Send + Sync>
where M: Debug + Send + Sync + 'static,

Wrap the error in a context, using fmt::LowerHex as fmt::Debug and [fmt::Display].
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fn context_debug<M>(self, value: M) -> Box<dyn Error + Send + Sync>
where M: Debug + Send + Sync + 'static,

Wrap the error in a context, using fmt::Debug as [fmt::Display].
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fn context_field<M>( self, key: &'static str, value: M, ) -> Box<dyn Error + Send + Sync>
where M: Debug + Display + Send + Sync + 'static,

Wrap the error in a keyed context.
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fn context_str_field<M>( self, key: &'static str, value: M, ) -> Box<dyn Error + Send + Sync>
where M: Into<String>,

Same as Self::context_field but using a string-like value, this is useful in case you need to pass a string slice which is borrowed and thus cannot be passed as part of ’static error.
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fn context_hex_field<M>( self, key: &'static str, value: M, ) -> Box<dyn Error + Send + Sync>
where M: Debug + Send + Sync + 'static,

Wrap the error in a keyed context, using fmt::LowerHex as fmt::Debug and [fmt::Display].
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fn context_debug_field<M>( self, key: &'static str, value: M, ) -> Box<dyn Error + Send + Sync>
where M: Debug + Send + Sync + 'static,

Wrap the error in a keyed context, using fmt::Debug as [fmt::Display].
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fn with_context<C, F>(self, cb: F) -> Box<dyn Error + Send + Sync>
where C: Debug + Display + Send + Sync + 'static, F: FnOnce() -> C,

Lazily wrap the error with a context.
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fn with_context_hex<C, F>(self, cb: F) -> Box<dyn Error + Send + Sync>
where C: Debug + Send + Sync + 'static, F: FnOnce() -> C,

Lazily wrap the error with a context, using fmt::LowerHex as fmt::Debug and [fmt::Display].
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fn with_context_debug<C, F>(self, cb: F) -> Box<dyn Error + Send + Sync>
where C: Debug + Send + Sync + 'static, F: FnOnce() -> C,

Lazily wrap the error with a context, using fmt::Debug as [fmt::Display].
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fn with_context_field<C, F>( self, key: &'static str, cb: F, ) -> Box<dyn Error + Send + Sync>
where C: Debug + Display + Send + Sync + 'static, F: FnOnce() -> C,

Lazily wrap the error with keyed context.
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fn with_context_str_field<C, F>( self, key: &'static str, cb: F, ) -> Box<dyn Error + Send + Sync>
where C: Into<String>, F: FnOnce() -> C,

Same as Self::with_context_field but using a string-like value, this is useful in case you need to pass a string slice which is borrowed and thus cannot be passed as part of ’static error.
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fn with_context_hex_field<C, F>( self, key: &'static str, cb: F, ) -> Box<dyn Error + Send + Sync>
where C: Debug + Send + Sync + 'static, F: FnOnce() -> C,

Lazily wrap the error with keyed context using fmt::LowerHex as fmt::Debug and [fmt::Display].
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fn with_context_debug_field<C, F>( self, key: &'static str, cb: F, ) -> Box<dyn Error + Send + Sync>
where C: Debug + Send + Sync + 'static, F: FnOnce() -> C,

Lazily wrap the error with keyed context using fmt::Debug as [fmt::Display].
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fn backtrace(self) -> Box<dyn Error + Send + Sync>

Add a Backtrace to the error.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FromRef<T> for T
where T: Clone,

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fn from_ref(input: &T) -> T

Converts to this type from a reference to the input type.
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impl<T> FutureExt for T

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fn with_context(self, otel_cx: Context) -> WithContext<Self> ⓘ

Attaches the provided Context to this type, returning a WithContext wrapper. Read more
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fn with_current_context(self) -> WithContext<Self> ⓘ

Attaches the current Context to this type, returning a WithContext wrapper. Read more
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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

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

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Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_request(self) -> Request<T>

Wrap the input message T in a rama_grpc::Request
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fn named_layer<S>(&self, service: S) -> Layered<<L as Layer<S>>::Service, S>
where L: Layer<S>,

Applies the layer to a service and wraps it in Layered.
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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> PolicyExt for T
where T: ?Sized,

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fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow only if self and other return Action::Follow. Read more
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where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow if either self or other returns Action::Follow. Read more
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where U: From<T>,

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fn rama_from(value: T) -> U

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where U: RamaFrom<T, CrateMarker>,

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fn rama_into(self) -> U

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where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

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where U: RamaTryFrom<T, CrateMarker>,

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type Error = <U as RamaTryFrom<T, CrateMarker>>::Error

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Should always be Self
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where T: Clone,

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The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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fn to_smolstr(&self) -> SmolStr

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fn to_string(&self) -> String

Converts the given value to a String. Read more
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fn try_to_string(&self) -> Result<String, TryReserveError>

ToString::to_string, but without panic on OOM.

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where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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Performs the conversion.
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where U: TryFrom<T>,

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where T: Any + Send + Sync + Debug + 'static,