Struct polar_core::filter::Relation
source · [−]pub struct Relation(_, _, _);
Expand description
A named logical extension of a data set. Corresponds to a “join” in relational algebra, but we leave out the details about columns (the host knows how to do it).
Fields represent “from”, “through” and “to”.
For example, Relation(“Foo”, “bar”, “Bar”) represents a Relation
from the Foo
type to the Bar
type, accessed using the bar
field
on Foo
.
Trait Implementations
impl Eq for Relation
impl StructuralEq for Relation
impl StructuralPartialEq for Relation
Auto Trait Implementations
impl RefUnwindSafe for Relation
impl Send for Relation
impl Sync for Relation
impl Unpin for Relation
impl UnwindSafe for Relation
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcefn clone_into(&self, target: &mut T)
fn clone_into(&self, target: &mut T)
🔬 This is a nightly-only experimental API. (
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more