Enum cglue::option::COption

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#[repr(C)]
pub enum COption<T> { None, Some(T), }
Expand description

FFI-safe Option.

This type is not really meant for general use, but rather as a last-resort conversion for type wrapping.

Typical workflow would include temporarily converting into/from COption.

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None

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Some(T)

Implementations§

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impl<T> COption<T>

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pub fn is_some(&self) -> bool

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pub fn unwrap(self) -> T

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pub fn as_ref(&self) -> Option<&T>

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pub fn as_mut(&mut self) -> Option<&mut T>

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pub fn take(&mut self) -> Option<T>

Trait Implementations§

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impl<T: Clone> Clone for COption<T>

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fn clone(&self) -> COption<T>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<T> Default for COption<T>

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl<T> From<COption<T>> for Option<T>

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fn from(opt: COption<T>) -> Self

Converts to this type from the input type.
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impl<T> From<Option<T>> for COption<T>

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fn from(opt: Option<T>) -> Self

Converts to this type from the input type.
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impl<T: Copy> Copy for COption<T>

Auto Trait Implementations§

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impl<T> RefUnwindSafe for COption<T>where T: RefUnwindSafe,

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impl<T> Send for COption<T>where T: Send,

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impl<T> Sync for COption<T>where T: Sync,

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impl<T> Unpin for COption<T>where T: Unpin,

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impl<T> UnwindSafe for COption<T>where T: UnwindSafe,

Blanket Implementations§

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impl<T> Any for Twhere 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 Twhere 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 Twhere 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> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, F> From2<T> for Fwhere T: Into<F>,

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fn from2(other: T) -> F

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impl<T, U> Into<U> for Twhere 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> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere 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 Twhere 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.
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impl<T> ContextBounds for Twhere T: 'static + Clone + Send + Sync,

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impl<T> GenericTypeBounds for T