[−][src]Struct abi_stable::external_types::crossbeam_channel::RReceiver
channels
only.The receiver end of a channel, which can be either bounded or unbounded.
Examples
use abi_stable::external_types::crossbeam_channel as mpmc; let (tx,rx)=mpmc::unbounded::<&'static str>(); let join_guard=std::thread::spawn(move||{ assert_eq!(rx.recv().unwrap(),"PING"); assert_eq!(rx.recv().unwrap(),"PING"); assert_eq!(rx.recv().unwrap(),"PING"); assert_eq!(rx.recv().unwrap(),"PING"); assert!( rx.try_recv().unwrap_err().is_empty() ); }); for _ in 0..4{ tx.send("PING").unwrap(); } join_guard.join().unwrap(); assert!( tx.send("").is_err() );
Implementations
impl<T> RReceiver<T>
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pub fn recv(&self) -> Result<T, RecvError>
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Blocks until a value is either received,or the the other end is disconnected.
If the channel queue is empty,this will block to receive a value.
This will return an error if the channel is disconnected.
Example
use abi_stable::external_types::crossbeam_channel as mpmc; let (tx,rx)=mpmc::bounded::<&'static str>(3); tx.send("J__e H____y").unwrap(); assert_eq!( rx.recv().unwrap(), "J__e H____y" ); drop(tx); assert!( rx.recv().is_err() );
pub fn try_recv(&self) -> Result<T, TryRecvError>
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Immediately receives a value,or returns with an error.
An error will be returned in these 2 conditions:
-
the channel is empty.
-
the channel has been disconnected.
If the channel has a capacity of 0,it will only receive a value if
the other end is calling send
.
Example
use abi_stable::external_types::crossbeam_channel as mpmc; let (tx,rx)=mpmc::bounded::<&'static str>(3); assert!( rx.try_recv().is_err() ); tx.send("D__e S_____r").unwrap(); assert_eq!( rx.try_recv().unwrap(), "D__e S_____r" ); drop(tx); assert!( rx.try_recv().is_err() );
pub fn recv_timeout(&self, timeout: Duration) -> Result<T, RecvTimeoutError>
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Blocks until a timeout to receive a value.
An error will be returned in these 2 conditions:
-
A value could not be received before the timeout.
-
the channel has been disconnected.
If the channel has a capacity of 0,it will only receive a value if
the other end calls send
before the timeout.
Example
use abi_stable::external_types::crossbeam_channel as mpmc; use std::time::Duration; let (tx,rx)=mpmc::bounded::<&'static str>(3); let timeout=Duration::from_millis(1); assert!( rx.recv_timeout(timeout).unwrap_err().is_timeout() ); tx.send("D__e S_____r").unwrap(); assert_eq!( rx.recv_timeout(timeout).unwrap(), "D__e S_____r" ); drop(tx); assert!( rx.recv_timeout(timeout).unwrap_err().is_disconnected() );
pub fn is_empty(&self) -> bool
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Returns true if there are no values in the channel queue.
Example
use abi_stable::external_types::crossbeam_channel as mpmc; let (tx,rx)=mpmc::bounded::<()>(1); assert!( rx.is_empty() ); tx.send(()).unwrap(); assert!( !rx.is_empty() ); rx.recv().unwrap(); assert!( rx.is_empty() );
pub fn is_full(&self) -> bool
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Returns true if the channel queue is full.
This always returns true for channels constructed with bounded(0)
.
Example
use abi_stable::external_types::crossbeam_channel as mpmc; let (tx,rx)=mpmc::bounded::<()>(2); assert!( !rx.is_full() ); tx.send(()).unwrap(); assert!( !rx.is_full() ); tx.send(()).unwrap(); assert!( rx.is_full() ); rx.recv().unwrap(); assert!( !rx.is_full() );
pub fn len(&self) -> usize
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Returns the amount of values in the channel queue.
Example
use abi_stable::external_types::crossbeam_channel as mpmc; let (tx,rx)=mpmc::bounded::<()>(2); assert_eq!(rx.len(),0); tx.send(()).unwrap(); assert_eq!(rx.len(),1); tx.send(()).unwrap(); assert_eq!(rx.len(),2); rx.recv().unwrap(); assert_eq!(rx.len(),1);
pub fn capacity(&self) -> Option<usize>
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Returns the amount of values the channel queue can hold.
This returns None if the channel is unbounded.
Example
use abi_stable::external_types::crossbeam_channel as mpmc; { let (tx,rx)=mpmc::bounded::<()>(2); assert_eq!(rx.capacity(),Some(2)); } { let (tx,rx)=mpmc::unbounded::<()>(); assert_eq!(rx.capacity(),None); }
pub fn iter(&self) -> RIter<'_, T>ⓘ
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Creates an Iterator that receives values from the channel.
Example
use abi_stable::external_types::crossbeam_channel as mpmc; use std::thread; let (tx,rx)=mpmc::bounded::<usize>(1); thread::spawn(move||{ for i in 0..1000 { tx.send(i).unwrap(); } }); for (i,n) in rx.iter().enumerate() { assert_eq!(i,n); }
Trait Implementations
impl<T> Clone for RReceiver<T>
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pub fn clone(&self) -> Self
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Clones this channel end,getting another handle into the channel.
Note that this allocates an RBox<_>.
pub fn clone_from(&mut self, source: &Self)
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impl<T> Debug for RReceiver<T>
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impl<T> From<Receiver<T>> for RReceiver<T>
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impl<T> GetStaticEquivalent_ for RReceiver<T> where
T: __StableAbi,
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T: __StableAbi,
type StaticEquivalent = _static_RReceiver<__GetStaticEquivalent<T>>
impl<'a, T> IntoIterator for &'a RReceiver<T>
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type Item = T
The type of the elements being iterated over.
type IntoIter = RIter<'a, T>
Which kind of iterator are we turning this into?
pub fn into_iter(self) -> RIter<'a, T>ⓘ
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Creates an Iterator that receives values from the channel.
impl<T> IntoIterator for RReceiver<T>
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type Item = T
The type of the elements being iterated over.
type IntoIter = RIntoIter<T>
Which kind of iterator are we turning this into?
pub fn into_iter(self) -> RIntoIter<T>ⓘ
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Creates an Iterator that receives values from the channel.
impl<T: Send> Send for RReceiver<T>
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impl<T> StableAbi for RReceiver<T> where
T: __StableAbi,
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T: __StableAbi,
type IsNonZeroType = False
Whether this type has a single invalid bit-pattern. Read more
pub const LAYOUT: &'static TypeLayout
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pub const ABI_CONSTS: AbiConsts
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impl<T: Send> Sync for RReceiver<T>
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Auto Trait Implementations
impl<T> RefUnwindSafe for RReceiver<T> where
T: RefUnwindSafe,
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T: RefUnwindSafe,
impl<T> Unpin for RReceiver<T>
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impl<T> UnwindSafe for RReceiver<T> where
T: RefUnwindSafe + UnwindSafe,
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T: RefUnwindSafe + UnwindSafe,
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<'a, T> BorrowOwned<'a> for T where
T: 'a + Clone,
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T: 'a + Clone,
type ROwned = T
The owned type, stored in RCow::Owned
type RBorrowed = &'a T
The borrowed type, stored in RCow::Borrowed
pub fn r_borrow(
&'a <T as BorrowOwned<'a>>::ROwned
) -> <T as BorrowOwned<'a>>::RBorrowed
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&'a <T as BorrowOwned<'a>>::ROwned
) -> <T as BorrowOwned<'a>>::RBorrowed
pub fn r_to_owned(
<T as BorrowOwned<'a>>::RBorrowed
) -> <T as BorrowOwned<'a>>::ROwned
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<T as BorrowOwned<'a>>::RBorrowed
) -> <T as BorrowOwned<'a>>::ROwned
pub fn deref_borrowed(&<T as BorrowOwned<'a>>::RBorrowed) -> &T
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pub fn deref_owned(&<T as BorrowOwned<'a>>::ROwned) -> &T
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pub fn from_cow_borrow(&'a T) -> <T as BorrowOwned<'a>>::RBorrowed
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pub fn from_cow_owned(<T as ToOwned>::Owned) -> <T as BorrowOwned<'a>>::ROwned
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pub fn into_cow_borrow(<T as BorrowOwned<'a>>::RBorrowed) -> &'a T
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pub fn into_cow_owned(<T as BorrowOwned<'a>>::ROwned) -> <T as ToOwned>::Owned
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impl<T> From<T> for T
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impl<T> GetWithMetadata for T
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type ForSelf = WithMetadata_<T, T>
This is always WithMetadata_<Self, Self>
impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> SelfOps for T where
T: ?Sized,
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T: ?Sized,
pub const T: PhantomData<fn() -> Self>
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pub const T_D: PhantomData<Self>
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pub fn assert_ty(self, _other: PhantomData<fn() -> Self>) -> Self
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pub fn assert_ty_ref(&self, _other: PhantomData<fn() -> Self>) -> &Self
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pub fn assert_ty_mut(&mut self, _other: PhantomData<fn() -> Self>) -> &mut Self
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pub fn ty_(&self) -> PhantomData<fn() -> Self>
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pub fn ty_d(&self) -> PhantomData<Self>
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pub fn ty_inv(&self) -> PhantomData<fn(Self) -> Self>
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pub fn ty_inv_ref(&self) -> PhantomData<Cell<&Self>>
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pub fn eq_id(&self, other: &Self) -> bool
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pub fn piped<F, U>(self, f: F) -> U where
F: FnOnce(Self) -> U,
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F: FnOnce(Self) -> U,
pub fn piped_ref<'a, F, U>(&'a self, f: F) -> U where
F: FnOnce(&'a Self) -> U,
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F: FnOnce(&'a Self) -> U,
pub fn piped_mut<'a, F, U>(&'a mut self, f: F) -> U where
F: FnOnce(&'a mut Self) -> U,
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F: FnOnce(&'a mut Self) -> U,
pub fn mutated<F>(self, f: F) -> Self where
F: FnOnce(&mut Self),
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F: FnOnce(&mut Self),
pub fn observe<F>(self, f: F) -> Self where
F: FnOnce(&Self),
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F: FnOnce(&Self),
pub fn into_<T>(self, PhantomData<fn() -> T>) -> T where
Self: Into<T>,
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Self: Into<T>,
pub fn as_ref_<T>(&self) -> &T where
Self: AsRef<T>,
T: ?Sized,
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Self: AsRef<T>,
T: ?Sized,
pub fn as_mut_<T>(&mut self) -> &mut T where
Self: AsMut<T>,
T: ?Sized,
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Self: AsMut<T>,
T: ?Sized,
pub fn drop_(self)
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impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn clone_into(&self, target: &mut T)
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impl<This> TransmuteElement for This where
This: ?Sized,
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This: ?Sized,
pub unsafe fn transmute_element<T>(self) -> Self::TransmutedPtr where
Self: CanTransmuteElement<T>,
Self::Target: Sized,
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Self: CanTransmuteElement<T>,
Self::Target: Sized,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The error type returned when the conversion fails.
pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> TypeIdentity for T where
T: ?Sized,
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T: ?Sized,
type Type = T
The same type as Self. Read more
pub fn into_type_val(self) -> Self::Type where
Self::Type: Sized,
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Self::Type: Sized,
pub fn into_type_ref(&self) -> &Self::Type
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pub fn into_type_mut(&mut self) -> &mut Self::Type
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pub fn into_type_box(self: Box<Self, Global>) -> Box<Self::Type, Global>
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pub fn into_type_arc(this: Arc<Self>) -> Arc<Self::Type>
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pub fn into_type_rc(this: Rc<Self>) -> Rc<Self::Type>
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pub fn from_type_val(this: Self::Type) -> Self where
Self::Type: Sized,
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Self::Type: Sized,