Trait MeetSemiLattice

pub trait MeetSemiLattice: Eq {
    // Required method
    fn meet(&mut self, other: &Self) -> bool;
}

A partially ordered set that has a greatest lower bound for any pair of elements in the set.

Dataflow analyses only require that their domains implement JoinSemiLattice, not MeetSemiLattice. However, types that will be used as dataflow domains should implement both so that they can be used with Dual.

Required Methods

fn meet(&mut self, other: &Self) -> bool

Computes the greatest lower bound of two elements, storing the result in self and returning true if self has changed.

The lattice meet operator is abbreviated as ∧.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl MeetSemiLattice for bool

fn meet(&mut self, other: &Self) -> bool

impl<I: Idx, T: MeetSemiLattice> MeetSemiLattice for IndexVec<I, T>

fn meet(&mut self, other: &Self) -> bool

impl<T: Idx> MeetSemiLattice for BitSet<T>

fn meet(&mut self, other: &Self) -> bool

impl<T: Idx> MeetSemiLattice for ChunkedBitSet<T>

fn meet(&mut self, other: &Self) -> bool

Implementors

impl<T: JoinSemiLattice> MeetSemiLattice for Dual<T>

impl<T: Clone + Eq> MeetSemiLattice for FlatSet<T>