Enum std::task::Poll [−][src]
pub enum Poll<T> {
Ready(T),
Pending,
}🔬 This is a nightly-only experimental API. (futures_api #50547)
futures in libcore are unstable
Indicates whether a value is available or if the current task has been scheduled to receive a wakeup instead.
Variants
Ready(T)🔬 This is a nightly-only experimental API. (futures_api #50547)
futures in libcore are unstable
Represents that a value is immediately ready.
Pending🔬 This is a nightly-only experimental API. (futures_api #50547)
futures in libcore are unstable
Represents that a value is not ready yet.
When a function returns Pending, the function must also
ensure that the current task is scheduled to be awoken when
progress can be made.
Methods
impl<T> Poll<T>[src]
impl<T> Poll<T>pub fn map<U, F>(self, f: F) -> Poll<U> where
F: FnOnce(T) -> U, [src]
pub fn map<U, F>(self, f: F) -> Poll<U> where
F: FnOnce(T) -> U, 🔬 This is a nightly-only experimental API. (futures_api #50547)
futures in libcore are unstable
Change the ready value of this Poll with the closure provided
pub fn is_ready(&self) -> bool[src]
pub fn is_ready(&self) -> bool🔬 This is a nightly-only experimental API. (futures_api #50547)
futures in libcore are unstable
Returns whether this is Poll::Ready
pub fn is_pending(&self) -> bool[src]
pub fn is_pending(&self) -> bool🔬 This is a nightly-only experimental API. (futures_api #50547)
futures in libcore are unstable
Returns whether this is Poll::Pending
impl<T, E> Poll<Result<T, E>>[src]
impl<T, E> Poll<Result<T, E>>pub fn map_ok<U, F>(self, f: F) -> Poll<Result<U, E>> where
F: FnOnce(T) -> U, [src]
pub fn map_ok<U, F>(self, f: F) -> Poll<Result<U, E>> where
F: FnOnce(T) -> U, 🔬 This is a nightly-only experimental API. (futures_api #50547)
futures in libcore are unstable
Change the success value of this Poll with the closure provided
pub fn map_err<U, F>(self, f: F) -> Poll<Result<T, U>> where
F: FnOnce(E) -> U, [src]
pub fn map_err<U, F>(self, f: F) -> Poll<Result<T, U>> where
F: FnOnce(E) -> U, 🔬 This is a nightly-only experimental API. (futures_api #50547)
futures in libcore are unstable
Change the error value of this Poll with the closure provided
Trait Implementations
impl<T> Hash for Poll<T> where
T: Hash, [src]
impl<T> Hash for Poll<T> where
T: Hash, fn hash<__HT>(&self, state: &mut __HT) where
__HT: Hasher, [src]
fn hash<__HT>(&self, state: &mut __HT) where
__HT: Hasher, Feeds this value into the given [Hasher]. Read more
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher, 1.3.0[src]
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher, Feeds a slice of this type into the given [Hasher]. Read more
impl<T> From<T> for Poll<T>[src]
impl<T> From<T> for Poll<T>impl<T> Clone for Poll<T> where
T: Clone, [src]
impl<T> Clone for Poll<T> where
T: Clone, fn clone(&self) -> Poll<T>[src]
fn clone(&self) -> Poll<T>Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)1.0.0[src]
fn clone_from(&mut self, source: &Self)Performs copy-assignment from source. Read more
impl<T> Debug for Poll<T> where
T: Debug, [src]
impl<T> Debug for Poll<T> where
T: Debug, fn fmt(&self, f: &mut Formatter) -> Result<(), Error>[src]
fn fmt(&self, f: &mut Formatter) -> Result<(), Error>Formats the value using the given formatter. Read more
impl<T> PartialOrd<Poll<T>> for Poll<T> where
T: PartialOrd<T>, [src]
impl<T> PartialOrd<Poll<T>> for Poll<T> where
T: PartialOrd<T>, fn partial_cmp(&self, other: &Poll<T>) -> Option<Ordering>[src]
fn partial_cmp(&self, other: &Poll<T>) -> Option<Ordering>This method returns an ordering between self and other values if one exists. Read more
fn lt(&self, other: &Poll<T>) -> bool[src]
fn lt(&self, other: &Poll<T>) -> boolThis method tests less than (for self and other) and is used by the < operator. Read more
fn le(&self, other: &Poll<T>) -> bool[src]
fn le(&self, other: &Poll<T>) -> boolThis method tests less than or equal to (for self and other) and is used by the <= operator. Read more
fn gt(&self, other: &Poll<T>) -> bool[src]
fn gt(&self, other: &Poll<T>) -> boolThis method tests greater than (for self and other) and is used by the > operator. Read more
fn ge(&self, other: &Poll<T>) -> bool[src]
fn ge(&self, other: &Poll<T>) -> boolThis method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
impl<T> Ord for Poll<T> where
T: Ord, [src]
impl<T> Ord for Poll<T> where
T: Ord, fn cmp(&self, other: &Poll<T>) -> Ordering[src]
fn cmp(&self, other: &Poll<T>) -> OrderingThis method returns an Ordering between self and other. Read more
fn max(self, other: Self) -> Self1.21.0[src]
fn max(self, other: Self) -> SelfCompares and returns the maximum of two values. Read more
fn min(self, other: Self) -> Self1.21.0[src]
fn min(self, other: Self) -> SelfCompares and returns the minimum of two values. Read more
impl<T> Eq for Poll<T> where
T: Eq, [src]
impl<T> Eq for Poll<T> where
T: Eq, impl<T> PartialEq<Poll<T>> for Poll<T> where
T: PartialEq<T>, [src]
impl<T> PartialEq<Poll<T>> for Poll<T> where
T: PartialEq<T>, fn eq(&self, other: &Poll<T>) -> bool[src]
fn eq(&self, other: &Poll<T>) -> boolThis method tests for self and other values to be equal, and is used by ==. Read more
fn ne(&self, other: &Poll<T>) -> bool[src]
fn ne(&self, other: &Poll<T>) -> boolThis method tests for !=.
impl<T> Copy for Poll<T> where
T: Copy, [src]
impl<T> Copy for Poll<T> where
T: Copy, impl<T, E> Try for Poll<Result<T, E>>[src]
impl<T, E> Try for Poll<Result<T, E>>type Ok = Poll<T>
The type of this value when viewed as successful.
type Error = E
The type of this value when viewed as failed.
fn into_result(
self
) -> Result<<Poll<Result<T, E>> as Try>::Ok, <Poll<Result<T, E>> as Try>::Error>[src]
fn into_result(
self
) -> Result<<Poll<Result<T, E>> as Try>::Ok, <Poll<Result<T, E>> as Try>::Error>Applies the "?" operator. A return of Ok(t) means that the execution should continue normally, and the result of ? is the value t. A return of Err(e) means that execution should branch to the innermost enclosing catch, or return from the function. Read more
fn from_error(e: <Poll<Result<T, E>> as Try>::Error) -> Poll<Result<T, E>>[src]
fn from_error(e: <Poll<Result<T, E>> as Try>::Error) -> Poll<Result<T, E>>Wrap an error value to construct the composite result. For example, Result::Err(x) and Result::from_error(x) are equivalent. Read more
fn from_ok(x: <Poll<Result<T, E>> as Try>::Ok) -> Poll<Result<T, E>>[src]
fn from_ok(x: <Poll<Result<T, E>> as Try>::Ok) -> Poll<Result<T, E>>Wrap an OK value to construct the composite result. For example, Result::Ok(x) and Result::from_ok(x) are equivalent. Read more
impl<T, E> Try for Poll<Option<Result<T, E>>>[src]
impl<T, E> Try for Poll<Option<Result<T, E>>>type Ok = Poll<Option<T>>
The type of this value when viewed as successful.
type Error = E
The type of this value when viewed as failed.
fn into_result(
self
) -> Result<<Poll<Option<Result<T, E>>> as Try>::Ok, <Poll<Option<Result<T, E>>> as Try>::Error>[src]
fn into_result(
self
) -> Result<<Poll<Option<Result<T, E>>> as Try>::Ok, <Poll<Option<Result<T, E>>> as Try>::Error>Applies the "?" operator. A return of Ok(t) means that the execution should continue normally, and the result of ? is the value t. A return of Err(e) means that execution should branch to the innermost enclosing catch, or return from the function. Read more
fn from_error(
e: <Poll<Option<Result<T, E>>> as Try>::Error
) -> Poll<Option<Result<T, E>>>[src]
fn from_error(
e: <Poll<Option<Result<T, E>>> as Try>::Error
) -> Poll<Option<Result<T, E>>>Wrap an error value to construct the composite result. For example, Result::Err(x) and Result::from_error(x) are equivalent. Read more
fn from_ok(
x: <Poll<Option<Result<T, E>>> as Try>::Ok
) -> Poll<Option<Result<T, E>>>[src]
fn from_ok(
x: <Poll<Option<Result<T, E>>> as Try>::Ok
) -> Poll<Option<Result<T, E>>>Wrap an OK value to construct the composite result. For example, Result::Ok(x) and Result::from_ok(x) are equivalent. Read more