Enum ScalarExpr

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pub enum ScalarExpr<F> {
    Column(F),
    Literal(Literal),
    Binary {
        left: Box<ScalarExpr<F>>,
        op: BinaryOp,
        right: Box<ScalarExpr<F>>,
    },
}

Expand description

Arithmetic scalar expression that can reference multiple fields.

Variants§

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Column(F)

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Literal(Literal)

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Binary

Fields

§left: Box<ScalarExpr<F>>

§op: BinaryOp

§right: Box<ScalarExpr<F>>

Implementations§

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pub fn binary( left: ScalarExpr<F>, op: BinaryOp, right: ScalarExpr<F>, ) -> ScalarExpr<F>

Trait Implementations§

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impl<F> Clone for ScalarExpr<F>
where F: Clone,

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fn clone(&self) -> ScalarExpr<F>

Returns a duplicate 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<F> Debug for ScalarExpr<F>
where F: Debug,

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<F> Freeze for ScalarExpr<F>
where F: Freeze,

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impl<F> RefUnwindSafe for ScalarExpr<F>
where F: RefUnwindSafe,

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impl<F> Send for ScalarExpr<F>
where F: Send,

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impl<F> Sync for ScalarExpr<F>
where F: Sync,

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impl<F> Unpin for ScalarExpr<F>
where F: Unpin,

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impl<F> UnwindSafe for ScalarExpr<F>
where F: 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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

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

Performs copy-assignment from self to dest. 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 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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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