Trait RowSet 

pub trait RowSet: Send + Sync {
    // Required methods
    fn len(&self) -> usize;
    fn is_full(&self) -> bool;
    fn iter(&self) -> RowIdIter<'_>;
    fn intersect(&self, other: &Self) -> Self
       where Self: Sized;
    fn union(&self, other: &Self) -> Self
       where Self: Sized;
    fn difference(&self, other: &Self) -> Self
       where Self: Sized;

    // Provided method
    fn is_empty(&self) -> bool { ... }
}

Abstract set of row identifiers that supports basic set algebra.

Required Methods

fn len(&self) -> usize

Returns the number of rows tracked by the set.

fn is_full(&self) -> bool

Returns true when the set represents the whole universe of rows.

fn iter(&self) -> RowIdIter<'_>

Returns an iterator over row identifiers.

fn intersect(&self, other: &Self) -> Self

where Self: Sized,

Returns the intersection between this set and other.

fn union(&self, other: &Self) -> Self

where Self: Sized,

Returns the union between this set and other.

fn difference(&self, other: &Self) -> Self

where Self: Sized,

Returns the relative complement (self \ other).

Provided Methods

fn is_empty(&self) -> bool

Returns true when the set is empty.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl RowSet for BitmapRowSet