OptRef

Enum OptRef

pub enum OptRef<'a, T> {
    Borrowed(&'a T),
    Owned(T),
}

Expand description

Represents either an owned or borrowed T. Useful to pass T or &'a T to a function when used as Into<OptRef<'a, T>>.

It is defined in this crate, so the From trait can be implemented for foreigin types.

Variants§

Borrowed(&'a T)

Owned(T)

Implementations§

impl<'a, T: Clone> OptRef<'a, T>

pub fn to_owned(self) -> T

Trait Implementations§

impl<T> Deref for OptRef<'_, T>

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &T

Dereferences the value.

impl<'a, P: Paint> From<&'a P> for OptRef<'a, P>

fn from(value: &'a P) -> Self

Converts to this type from the input type.

impl<'a, P: Default> From<&'a ParagraphStyle<P>> for OptRef<'a, ParagraphStyle<P>>

fn from(value: &'a ParagraphStyle<P>) -> Self

Converts to this type from the input type.

impl<'a> From<&'a RoundingRadii> for OptRef<'a, RoundingRadii>

fn from(value: &'a RoundingRadii) -> Self

Converts to this type from the input type.

impl<'a, P: Paint> From<&str> for OptRef<'a, P>

fn from(value: &str) -> Self

Converts to this type from the input type.

impl<'a, P: Paint> From<[f32; 3]> for OptRef<'a, P>

fn from(value: [f32; 3]) -> Self

Converts to this type from the input type.

impl<'a, P: Paint> From<[f32; 4]> for OptRef<'a, P>

fn from(value: [f32; 4]) -> Self

Converts to this type from the input type.

impl<'a, P: Default, S: Into<String>, P2: Into<Owned<P>>> From<(S, f32, P2)> for OptRef<'a, ParagraphStyle<P>>

fn from(value: (S, f32, P2)) -> Self

Converts to this type from the input type.

impl<'a> From<(f32, f32)> for OptRef<'a, RoundingRadii>

fn from(value: (f32, f32)) -> Self

Converts to this type from the input type.

impl<'a, P: Paint> From<(f32, f32, f32)> for OptRef<'a, P>

fn from(value: (f32, f32, f32)) -> Self

Converts to this type from the input type.

impl<'a, P: Paint> From<(f32, f32, f32, f32)> for OptRef<'a, P>

fn from(value: (f32, f32, f32, f32)) -> Self

Converts to this type from the input type.

impl<'a, P: Paint> From<ColorSource<<P as Paint>::Texture, <P as Paint>::ColorSourceFragment>> for OptRef<'a, P>

fn from(value: ColorSource<P::Texture, P::ColorSourceFragment>) -> Self

Converts to this type from the input type.

impl<'a, P: Paint> From<P> for OptRef<'a, P>

fn from(value: P) -> Self

Converts to this type from the input type.

impl<'a, P: Default> From<ParagraphStyle<P>> for OptRef<'a, ParagraphStyle<P>>

fn from(value: ParagraphStyle<P>) -> Self

Converts to this type from the input type.

impl<'a> From<RoundingRadii> for OptRef<'a, RoundingRadii>

fn from(value: RoundingRadii) -> Self

Converts to this type from the input type.

impl<'a> From<f32> for OptRef<'a, RoundingRadii>

fn from(value: f32) -> Self

Converts to this type from the input type.

impl<'a, P: Paint> From<u32> for OptRef<'a, P>

fn from(value: u32) -> Self

Converts to this type from the input type.

Auto Trait Implementations§

impl<'a, T> Freeze for OptRef<'a, T>
where T: Freeze,

impl<'a, T> RefUnwindSafe for OptRef<'a, T>
where T: RefUnwindSafe,

impl<'a, T> Send for OptRef<'a, T>
where T: Send + Sync,

impl<'a, T> Sync for OptRef<'a, T>
where T: Sync,

impl<'a, T> Unpin for OptRef<'a, T>
where T: Unpin,

impl<'a, T> UnwindSafe for OptRef<'a, T>
where T: UnwindSafe + RefUnwindSafe,

Blanket Implementations§

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

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

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

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

fn into(self) -> U

Calls U::from(self).

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

impl<P, T> Receiver for P
where P: Deref<Target = T> + ?Sized, T: ?Sized,

type Target = T

🔬This is a nightly-only experimental API. (arbitrary_self_types)

The target type on which the method may be called.

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

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.