attribute_derive::from_partial

Struct Partial

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pub struct Partial<T>(pub T);
Expand description

Utility struct to avoid duplicate trait definition when using Self<A> for <Self<B> as BaseAttribute>::Partial.

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§0: T

Trait Implementations§

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impl<T: FromPartial<P>, P> FromPartial<Partial<FlagOrValue<P>>> for FlagOrValue<T>

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fn from(partial: Partial<FlagOrValue<P>>) -> Result<Self>

Creates Self from T. Read more
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fn from_option( partial: Option<Partial<FlagOrValue<P>>>, _: &str, ) -> Result<Self>

Creates Self from optional T. Read more
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fn join( first: Option<SpannedValue<Partial<FlagOrValue<P>>>>, second: SpannedValue<Partial<FlagOrValue<P>>>, specified_twice_error: &str, ) -> Result<Option<SpannedValue<Partial<FlagOrValue<P>>>>>

Defines how two arguments for the same parameter should be handled. Read more
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impl<T: FromPartial<P>, P> FromPartial<Partial<Option<P>>> for Option<T>

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fn from(partial: Partial<Option<P>>) -> Result<Self>

Creates Self from T. Read more
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fn from_option(partial: Option<T>, error_missing: &str) -> Result<Self>

Creates Self from optional T. Read more
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fn join( first: Option<SpannedValue<T>>, second: SpannedValue<T>, specified_twice_error: &str, ) -> Result<Option<SpannedValue<T>>>

Defines how two arguments for the same parameter should be handled. Read more
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impl<T: FromPartial<P>, P> FromPartial<Partial<Vec<P>>> for Vec<T>

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fn from(partial: Partial<Vec<P>>) -> Result<Self>

Creates Self from T. Read more
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fn join( first: Option<SpannedValue<Partial<Vec<P>>>>, second: SpannedValue<Partial<Vec<P>>>, _: &str, ) -> Result<Option<SpannedValue<Partial<Vec<P>>>>>

Defines how two arguments for the same parameter should be handled. Read more
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fn from_option(partial: Option<T>, error_missing: &str) -> Result<Self>

Creates Self from optional T. Read more

Auto Trait Implementations§

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impl<T> Freeze for Partial<T>
where T: Freeze,

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

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

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

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

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

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> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FromPartial<T> for T

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fn from(partial: T) -> Result<T, Error>

Creates Self from T. Read more
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fn from_option(partial: Option<T>, error_missing: &str) -> Result<Self>

Creates Self from optional T. Read more
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fn join( first: Option<SpannedValue<T>>, second: SpannedValue<T>, specified_twice_error: &str, ) -> Result<Option<SpannedValue<T>>>

Defines how two arguments for the same parameter should be handled. Read more
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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.