std/equatable

Import with import std/equatable.

Exports

Interfaces

• Equatable

interface Equatable

interface Equatable {
    fn equal?(a: self, b: self): Bool
}

Protocol for structural equality between two values of the same type.

Equatable.equal?(a, b) returns True iff a and b are equal under the implementor’s notion of equality. The == operator desugars to Equatable.equal?(...) for any type that impl this interface; != desugars to its negation.

All four primitive types — Int, Float, Bool, String — implement Equatable using the underlying primitive equality. To implement it for a custom type:

pub struct Point {
  x: Int
  y: Int
}

impl Equatable for Point {
  fn equal?(a: Point, b: Point): Bool { a.x == b.x and a.y == b.y }
}

derive Equatable synthesizes pairwise field equality for structs, variant-then-payload comparison for enums, and inner-value delegation for distinct types.