pub enum Position<T> {
First(T),
Middle(T),
Last(T),
Only(T),
}Expand description
A value yielded by WithPosition.
Indicates the position of this element in the iterator results.
See .with_position() for more information.
Variants§
First(T)
This is the first element.
Middle(T)
This is neither the first nor the last element.
Last(T)
This is the last element.
Only(T)
This is the only element.
Implementations§
Source§impl<T> Position<T>
impl<T> Position<T>
Sourcepub fn into_inner(self) -> T
pub fn into_inner(self) -> T
Return the inner value.
Trait Implementations§
Source§impl<T> PartialEq for Position<T>where
T: PartialEq,
impl<T> PartialEq for Position<T>where
T: PartialEq,
impl<T> Copy for Position<T>where
T: Copy,
impl<T> StructuralPartialEq for Position<T>
Auto Trait Implementations§
impl<T> Freeze for Position<T>where
T: Freeze,
impl<T> RefUnwindSafe for Position<T>where
T: RefUnwindSafe,
impl<T> Send for Position<T>where
T: Send,
impl<T> Sync for Position<T>where
T: Sync,
impl<T> Unpin for Position<T>where
T: Unpin,
impl<T> UnsafeUnpin for Position<T>where
T: UnsafeUnpin,
impl<T> UnwindSafe for Position<T>where
T: UnwindSafe,
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> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
Source§impl<T> Downcast for Twhere
T: Any,
impl<T> Downcast for Twhere
T: Any,
Source§fn into_any(self: Box<T>) -> Box<dyn Any>
fn into_any(self: Box<T>) -> Box<dyn Any>
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.Source§fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
Convert
Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be
further downcast into Rc<ConcreteType> where ConcreteType implements Trait.Source§fn 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
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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.Source§impl<T> DowncastSync for T
impl<T> DowncastSync for T
Source§impl<A> DynCastExt for A
impl<A> DynCastExt for A
Source§fn dyn_cast<T>(
self,
) -> Result<<A as DynCastExtHelper<T>>::Target, <A as DynCastExtHelper<T>>::Source>where
A: DynCastExtHelper<T>,
T: ?Sized,
fn dyn_cast<T>(
self,
) -> Result<<A as DynCastExtHelper<T>>::Target, <A as DynCastExtHelper<T>>::Source>where
A: DynCastExtHelper<T>,
T: ?Sized,
Use this to cast from one trait object type to another. Read more
Source§fn dyn_upcast<T>(self) -> <A as DynCastExtAdvHelper<T, T>>::Target
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Source§fn dyn_cast_adv<F, T>(
self,
) -> Result<<A as DynCastExtAdvHelper<F, T>>::Target, <A as DynCastExtAdvHelper<F, T>>::Source>
fn dyn_cast_adv<F, T>( self, ) -> Result<<A as DynCastExtAdvHelper<F, T>>::Target, <A as DynCastExtAdvHelper<F, T>>::Source>
Source§fn dyn_cast_with_config<C>(
self,
) -> Result<<A as DynCastExtAdvHelper<<C as DynCastConfig>::Source, <C as DynCastConfig>::Target>>::Target, <A as DynCastExtAdvHelper<<C as DynCastConfig>::Source, <C as DynCastConfig>::Target>>::Source>where
C: DynCastConfig,
A: DynCastExtAdvHelper<<C as DynCastConfig>::Source, <C as DynCastConfig>::Target>,
fn dyn_cast_with_config<C>(
self,
) -> Result<<A as DynCastExtAdvHelper<<C as DynCastConfig>::Source, <C as DynCastConfig>::Target>>::Target, <A as DynCastExtAdvHelper<<C as DynCastConfig>::Source, <C as DynCastConfig>::Target>>::Source>where
C: DynCastConfig,
A: DynCastExtAdvHelper<<C as DynCastConfig>::Source, <C as DynCastConfig>::Target>,
Use this to cast from one trait object type to another. With this method
the type parameter is a config type that uniquely specifies which cast
should be preformed. Read more
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 more