pub struct LazyData<T> { /* private fields */ }
Expand description
A lazy extractor for thread-local data.
Using LazyData
as an extractor will not initialize the data; get
must be used.
Constructs a new LazyData
extractor with the given initialization function.
Initialization functions must return a future that resolves to T
.
Returns reference to result of lazy T
value, initializing if necessary.
Performs copy-assignment from
source
.
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Formats the value using the given formatter.
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The associated error which can be returned.
Create a Self
from request parts asynchronously.
Create a
Self
from request head asynchronously.
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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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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.