Struct Unused

#[repr(transparent)]
pub struct Unused;

Expand description

Empty type marker, which can be used by a Prelim trait implementations when no integrated value should be returned after prelim type has been integrated as a result of insertion.

Trait Implementations§

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impl TryFrom<ItemPtr> for Unused

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type Error = ItemPtr

The type returned in the event of a conversion error.

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fn try_from(_: ItemPtr) -> Result<Unused, <Unused as TryFrom<ItemPtr>>::Error>

Performs the conversion.

Auto Trait Implementations§

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impl UnwindSafe for Unused

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> CompatExt for T

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fn compat(self) -> Compat<T>

Applies the [Compat] adapter by value. Read more

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fn compat_ref(&self) -> Compat<&T>

Applies the [Compat] adapter by shared reference. Read more

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fn compat_mut(&mut self) -> Compat<&mut T>

Applies the [Compat] adapter by mutable reference. Read more

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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impl<T, U> Into for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> IntoEither for T

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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 more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

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

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