Enum Operator

pub enum Operator {
    Eq,
    NotEq,
    Gt,
    Gte,
    Lt,
    Lte,
    And,
    Or,
    Add,
}

Equalities, inequalities, and boolean operations over possibly null values.

For the equalities and inequalities, if either side is null, the result is null. The Boolean operators obey Kleene (three-valued) logic.

Variants

Eq

NotEq

Gt

Gte

Lt

Lte

And

Or

Add

The sum of the arguments.

Errs at runtime if the sum would overflow or underflow.

The result is null at any index that either input is null.

Implementations

impl Operator

pub fn inverse(self) -> Option<Self>

pub fn logical_inverse(self) -> Option<Self>

pub fn swap(self) -> Self

Change the sides of the operator, where changing lhs and rhs won’t change the result of the operation

pub fn maybe_cmp_operator(self) -> Option<Operator>

Trait Implementations

impl Clone for Operator

fn clone(&self) -> Operator

Returns a duplicate of the value.

const fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Operator

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for Operator

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<Operator> for Operator

fn from(cmp_operator: Operator) -> Self

Converts to this type from the input type.

impl Hash for Operator

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 Operator

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

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

const 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 PartialOrd for Operator

fn partial_cmp(&self, other: &Operator) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for Operator

impl Eq for Operator

impl StructuralPartialEq for Operator