pub struct Key<T> { /* private fields */ }
Expand description
Partially constructed context (missing value) for Result<T>
.
Save off a key for a context that will be added to builder
.
Finish creating context and add it to Result<T>
.
Finish creating context and add it to Result<T>
.
Immutably borrows from an owned value.
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Mutably borrows from an owned value.
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Returns the argument unchanged.
Calls U::from(self)
.
That is, this conversion is whatever the implementation of
From<T> for U
chooses to do.
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.