MaybeBoxed

kas_theme

Enum MaybeBoxed 

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pub enum MaybeBoxed<'a, B: 'a + ?Sized> {
    Borrowed(&'a B),
    Boxed(Box<B>),
}
Expand description

An optionally-owning (boxed) reference

This is related but not identical to Cow.

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Borrowed(&'a B)

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Boxed(Box<B>)

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impl<T: ?Sized> AsRef<T> for MaybeBoxed<'_, T>

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fn as_ref(&self) -> &T

Converts this type into a shared reference of the (usually inferred) input type.

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impl<'a, B> Freeze for MaybeBoxed<'a, B>
where B: ?Sized,

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impl<'a, B> RefUnwindSafe for MaybeBoxed<'a, B>
where B: RefUnwindSafe + ?Sized,

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impl<'a, B> Send for MaybeBoxed<'a, B>
where B: Sync + Send + ?Sized,

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impl<'a, B> Sync for MaybeBoxed<'a, B>
where B: Sync + ?Sized,

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impl<'a, B> Unpin for MaybeBoxed<'a, B>
where B: ?Sized,

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impl<'a, B> UnwindSafe for MaybeBoxed<'a, B>
where B: RefUnwindSafe + UnwindSafe + ?Sized,

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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<S, T> Cast<T> for S
where T: Conv<S>,

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fn cast(self) -> T

Cast from Self to T Read more
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fn try_cast(self) -> Result<T, Error>

Try converting from Self to T Read more
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impl<S, T> CastApprox<T> for S
where T: ConvApprox<S>,

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fn try_cast_approx(self) -> Result<T, Error>

Try approximate conversion from Self to T Read more
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fn cast_approx(self) -> T

Cast approximately from Self to T Read more
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impl<S, T> CastFloat<T> for S
where T: ConvFloat<S>,

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fn cast_trunc(self) -> T

Cast to integer, truncating Read more
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fn cast_nearest(self) -> T

Cast to the nearest integer Read more
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fn cast_floor(self) -> T

Cast the floor to an integer Read more
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fn cast_ceil(self) -> T

Cast the ceiling to an integer Read more
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fn try_cast_trunc(self) -> Result<T, Error>

Try converting to integer with truncation Read more
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fn try_cast_nearest(self) -> Result<T, Error>

Try converting to the nearest integer Read more
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fn try_cast_floor(self) -> Result<T, Error>

Try converting the floor to an integer Read more
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fn try_cast_ceil(self) -> Result<T, Error>

Try convert the ceiling to an integer 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, U> Into<U> 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, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.