pub enum StorageEntryModifier {
Optional,
Default,
}
Expand description
Modifier for a storage entry that indicates how the entry behaves when not set.
Variants§
Optional
If the entry doesn’t exist, it’s reported as None
.
Default
If the entry doesn’t exist, the default value is returned.
Trait Implementations§
Source§impl Clone for StorageEntryModifier
impl Clone for StorageEntryModifier
Source§fn clone(&self) -> StorageEntryModifier
fn clone(&self) -> StorageEntryModifier
Returns a duplicate of the value. Read more
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moreSource§impl From<&StorageEntryModifier> for StorageEntryModifier
impl From<&StorageEntryModifier> for StorageEntryModifier
Source§fn from(modifier: &StorageEntryModifier) -> Self
fn from(modifier: &StorageEntryModifier) -> Self
Converts to this type from the input type.
Source§impl From<&StorageEntryModifier> for StorageEntryModifier
impl From<&StorageEntryModifier> for StorageEntryModifier
Source§fn from(modifier: &StorageEntryModifier) -> Self
fn from(modifier: &StorageEntryModifier) -> Self
Converts to this type from the input type.
Source§impl From<&StorageEntryModifier> for StorageEntryModifier
impl From<&StorageEntryModifier> for StorageEntryModifier
Source§fn from(modifier: &StorageEntryModifier) -> Self
fn from(modifier: &StorageEntryModifier) -> Self
Converts to this type from the input type.
Auto Trait Implementations§
impl Freeze for StorageEntryModifier
impl RefUnwindSafe for StorageEntryModifier
impl Send for StorageEntryModifier
impl Sync for StorageEntryModifier
impl Unpin for StorageEntryModifier
impl UnwindSafe for StorageEntryModifier
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§impl<T> CheckedConversion for T
impl<T> CheckedConversion for T
Source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
Source§impl<T> Instrument for T
impl<T> Instrument for T
Source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
Source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
Source§impl<T> IntoEither for T
impl<T> IntoEither for T
Source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moreSource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moreSource§impl<Src, Dest> IntoTuple<Dest> for Srcwhere
Dest: FromTuple<Src>,
impl<Src, Dest> IntoTuple<Dest> for Srcwhere
Dest: FromTuple<Src>,
fn into_tuple(self) -> Dest
Source§impl<T, Outer> IsWrappedBy<Outer> for T
impl<T, Outer> IsWrappedBy<Outer> for T
Source§impl<T> SaturatedConversion for T
impl<T> SaturatedConversion for T
Source§fn saturated_from<T>(t: T) -> Selfwhere
Self: UniqueSaturatedFrom<T>,
fn saturated_from<T>(t: T) -> Selfwhere
Self: UniqueSaturatedFrom<T>,
Source§fn saturated_into<T>(self) -> Twhere
Self: UniqueSaturatedInto<T>,
fn saturated_into<T>(self) -> Twhere
Self: UniqueSaturatedInto<T>,
Consume self to return an equivalent value of
T
. Read moreSource§impl<S, T> UncheckedInto<T> for Swhere
T: UncheckedFrom<S>,
impl<S, T> UncheckedInto<T> for Swhere
T: UncheckedFrom<S>,
Source§fn unchecked_into(self) -> T
fn unchecked_into(self) -> T
The counterpart to
unchecked_from
.Source§impl<T, S> UniqueSaturatedInto<T> for S
impl<T, S> UniqueSaturatedInto<T> for S
Source§fn unique_saturated_into(self) -> T
fn unique_saturated_into(self) -> T
Consume self to return an equivalent value of
T
.