Enum frame_support::traits::SameOrOther
source · pub enum SameOrOther<A, B> {
None,
Same(A),
Other(B),
}
Expand description
Return type used when we need to return one of two items, each of the opposite direction or
sign, with one (Same
) being of the same type as the self
or primary argument of the function
that returned it.
Variants
None
No item.
Same(A)
An item of the same type as the Self
on which the return function was called.
Other(B)
An item of the opposite type to the Self
on which the return function was called.
Implementations
sourceimpl<A, B> SameOrOther<A, B>
impl<A, B> SameOrOther<A, B>
sourcepub fn try_same(self) -> Result<A, Self>
pub fn try_same(self) -> Result<A, Self>
Returns Ok
with the inner value of Same
if self
is that, otherwise returns Err
with
self
.
sourcepub fn try_other(self) -> Result<B, Self>
pub fn try_other(self) -> Result<B, Self>
Returns Ok
with the inner value of Other
if self
is that, otherwise returns Err
with
self
.
sourcepub fn try_none(self) -> Result<(), Self>
pub fn try_none(self) -> Result<(), Self>
Returns Ok
if self
is None
, otherwise returns Err
with self
.
pub fn same(self) -> Result<A, B>where
A: Default,
pub fn other(self) -> Result<B, A>where
B: Default,
Trait Implementations
Auto Trait Implementations
impl<A, B> RefUnwindSafe for SameOrOther<A, B>where
A: RefUnwindSafe,
B: RefUnwindSafe,
impl<A, B> Send for SameOrOther<A, B>where
A: Send,
B: Send,
impl<A, B> Sync for SameOrOther<A, B>where
A: Sync,
B: Sync,
impl<A, B> Unpin for SameOrOther<A, B>where
A: Unpin,
B: Unpin,
impl<A, B> UnwindSafe for SameOrOther<A, B>where
A: UnwindSafe,
B: UnwindSafe,
Blanket Implementations
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> CheckedConversion for T
impl<T> CheckedConversion for T
sourcefn checked_from<T>(t: T) -> Option<Self>where
Self: TryFrom<T>,
fn checked_from<T>(t: T) -> Option<Self>where
Self: TryFrom<T>,
sourcefn checked_into<T>(self) -> Option<T>where
Self: TryInto<T>,
fn checked_into<T>(self) -> Option<T>where
Self: TryInto<T>,
impl<T> Downcast for Twhere
T: Any,
impl<T> Downcast for Twhere
T: Any,
fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>
fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>
Convert
Box<dyn Trait>
(where Trait: Downcast
) to Box<dyn Any>
. Box<dyn Any>
can
then be further downcast
into Box<ConcreteType>
where ConcreteType
implements Trait
. Read morefn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
Convert
Rc<Trait>
(where Trait: Downcast
) to Rc<Any>
. Rc<Any>
can then be
further downcast
into Rc<ConcreteType>
where ConcreteType
implements Trait
. Read morefn as_any(&self) -> &(dyn Any + 'static)
fn as_any(&self) -> &(dyn Any + 'static)
Convert
&Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &Any
’s vtable from &Trait
’s. Read morefn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
Convert
&mut Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &mut Any
’s vtable from &mut Trait
’s. Read moresourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
sourcefn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
sourceimpl<T, Outer> IsWrappedBy<Outer> for Twhere
Outer: AsRef<T> + AsMut<T> + From<T>,
T: From<Outer>,
impl<T, Outer> IsWrappedBy<Outer> for Twhere
Outer: AsRef<T> + AsMut<T> + From<T>,
T: From<Outer>,
impl<T> Pointable for T
impl<T> Pointable for T
sourceimpl<T> SaturatedConversion for T
impl<T> SaturatedConversion for T
sourcefn saturated_from<T>(t: T) -> Selfwhere
Self: UniqueSaturatedFrom<T>,
fn saturated_from<T>(t: T) -> Selfwhere
Self: UniqueSaturatedFrom<T>,
sourcefn 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 moresourceimpl<S, T> UncheckedInto<T> for Swhere
T: UncheckedFrom<S>,
impl<S, T> UncheckedInto<T> for Swhere
T: UncheckedFrom<S>,
sourcefn unchecked_into(self) -> T
fn unchecked_into(self) -> T
The counterpart to
unchecked_from
.sourceimpl<T, S> UniqueSaturatedInto<T> for Swhere
T: Bounded,
S: TryInto<T>,
impl<T, S> UniqueSaturatedInto<T> for Swhere
T: Bounded,
S: TryInto<T>,
sourcefn unique_saturated_into(self) -> T
fn unique_saturated_into(self) -> T
Consume self to return an equivalent value of
T
.