pub enum MutateStorageError<T, E> {
    ConcurrentModification(T),
    ValueFunctionFailed(E),
}
Expand description

Possible errors when mutating a storage value.

Variants§

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ConcurrentModification(T)

The underlying db failed to update due to a concurrent modification. Contains the new value that was not stored.

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ValueFunctionFailed(E)

The function given to us to create the value to be stored failed. May be used to signal that having looked at the existing value, they don’t want to mutate it.

Trait Implementations§

Formats the value using the given formatter. Read more
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.

Auto Trait Implementations§

Blanket Implementations§

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Compare self to key and return true if they are equal.

Returns the argument unchanged.

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Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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Get a mutable reference to the inner from the outer.

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Convert from a value of T into an equivalent instance of Self. Read more
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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.
The counterpart to unchecked_from.
Consume self to return an equivalent value of T.
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