tag_vec

Enum Expression

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pub enum Expression<'a, Q>
where
    Q: ?Sized + Hash + Eq + 'a,
{
    And(Box<Expression<'a, Q>>, Box<Expression<'a, Q>>),
    Or(Box<Expression<'a, Q>>, Box<Expression<'a, Q>>),
    Not(Box<Expression<'a, Q>>),
    Tag(&'a Q),
}
Expand description

A definition of a query

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And(Box<Expression<'a, Q>>, Box<Expression<'a, Q>>)

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Or(Box<Expression<'a, Q>>, Box<Expression<'a, Q>>)

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Not(Box<Expression<'a, Q>>)

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Tag(&'a Q)

Auto Trait Implementations§

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impl<'a, Q> Freeze for Expression<'a, Q>
where Q: ?Sized,

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impl<'a, Q> RefUnwindSafe for Expression<'a, Q>
where Q: RefUnwindSafe + ?Sized,

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impl<'a, Q> Send for Expression<'a, Q>
where Q: Sync + ?Sized,

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impl<'a, Q> Sync for Expression<'a, Q>
where Q: Sync + ?Sized,

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impl<'a, Q> Unpin for Expression<'a, Q>
where Q: ?Sized,

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impl<'a, Q> UnwindSafe for Expression<'a, Q>
where Q: RefUnwindSafe + ?Sized,

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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, 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.