Struct protobuf::ext::ExtFieldOptional

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pub struct ExtFieldOptional<M: Message, T: ProtobufType> {
    pub field_number: u32,
    pub phantom: PhantomData<(M, T)>,
}
Expand description

Optional ext field

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§field_number: u32

Extension field number

§phantom: PhantomData<(M, T)>

Marker

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impl<M: Message, T: ProtobufType> ExtFieldOptional<M, T>

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pub fn get(&self, m: &M) -> Option<T::Value>

Get a copy of value from a message.

Extension data is stored in UnknownFields.

Auto Trait Implementations§

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impl<M, T> RefUnwindSafe for ExtFieldOptional<M, T>where M: RefUnwindSafe, T: RefUnwindSafe,

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impl<M, T> Send for ExtFieldOptional<M, T>where T: Send,

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impl<M, T> Sync for ExtFieldOptional<M, T>where T: Sync,

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impl<M, T> Unpin for ExtFieldOptional<M, T>where M: Unpin, T: Unpin,

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impl<M, T> UnwindSafe for ExtFieldOptional<M, T>where M: UnwindSafe, T: UnwindSafe,

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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, 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, 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.