Enum BinaryOp 

pub enum BinaryOp {
    Eq,
    Less,
    LessEq,
    Add,
    Sub,
    Mul,
    In,
    Contains,
    ContainsAll,
    ContainsAny,
    GetTag,
    HasTag,
}

Built-in operators with exactly two arguments

Variants

Eq

Equality

Works on arguments of any type, ie “total equality”. If you compare things of different types, Eq will return false, rather than error.

Less

<

Arguments must have Long type

LessEq

<=

Arguments must have Long type

Add

Integer addition

Arguments must have Long type

Sub

Integer subtraction

Arguments must have Long type

Mul

Integer multiplication

Arguments must have Long type

In

Hierarchy membership. Specifically, is the first arg a member of the second.

First argument must have Entity type. Second argument must either have Entity type, or Set type where the set elements all have Entity type. If it’s a set, the semantics is “is the first argument in any element of the given set”

Contains

Set membership.

First argument must have Set type.

ContainsAll

ContainsAll test for sets. Specifically, if the first set contains the second arg.

Arguments must have Set type

ContainsAny

ContainsAny test for sets (is the intersection empty?)

Arguments must have Set type

GetTag

Get a tag of an entity.

First argument must have Entity type, second argument must have String type.

HasTag

Does the given expr have the given tag?

First argument must have Entity type, second argument must have String type.

Trait Implementations

impl Clone for BinaryOp

fn clone(&self) -> BinaryOp

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BinaryOp

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

Formats the value using the given formatter.

impl Display for BinaryOp

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

Formats the value using the given formatter.

impl Hash for BinaryOp

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 BinaryOp

fn eq(&self, other: &BinaryOp) -> 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 Copy for BinaryOp

impl Eq for BinaryOp

impl StructuralPartialEq for BinaryOp