Struct ExpressionRawPointer 

pub struct ExpressionRawPointer(pub Rc<Expression>);

Wrap a reference of an expression as a raw pointer to get trivialize comparison and hashing. Tries to reproduce the effect of id(x) from Python world.

Tuple Fields

0: Rc<Expression>

Trait Implementations

impl CachedMapper<ExpressionRawPointer, u64> for HashCacher

fn query_cache(&self, key: &ExpressionRawPointer) -> Option<&u64>

fn add_to_cache(&mut self, key: ExpressionRawPointer, val: u64)

impl Hash for ExpressionRawPointer

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ExpressionRawPointer

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

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for ExpressionRawPointer