Available on crate feature rt
and tokio_unstable
only.
Expand description
An opaque ID that uniquely identifies a task relative to all other currently
running tasks.
- Task IDs are unique relative to other currently running tasks. When a
task completes, the same ID may be used for another task.
- Task IDs are not sequential, and do not indicate the order in which
tasks are spawned, what runtime a task is spawned on, or any other data.
Note: This is an unstable API. The public API of this type
may break in 1.x releases. See the documentation on unstable
features for details.
Performs copy-assignment from
source
.
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Formats the value using the given formatter.
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Formats the value using the given formatter.
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This method tests for self
and other
values to be equal, and is used
by ==
.
This method tests for !=
. The default implementation is almost always
sufficient, and should not be overridden without very good reason.
Immutably borrows from an owned value.
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Mutably borrows from an owned value.
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Returns the argument unchanged.
Instruments this type with the provided
Span
, returning an
Instrumented
wrapper.
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Calls U::from(self)
.
That is, this conversion is whatever the implementation of
From<T> for U
chooses to do.
The resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning.
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Uses borrowed data to replace owned data, usually by cloning.
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Converts the given value to a
String
.
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The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.