Traits

What problem does it solve?

Developers often need clear, reliable semantics for equality, hashing, and ordering when working with Effect-TS. This skill provides guidance on implementing Equal, Hash, Equivalence, and Order, ensuring consistent behavior across value objects and collections.

Core Features & Use Cases

• Equal and Hash integration: Use Data.Class to automatically derive equality and hash behavior for domain types.
• Custom equivalence and ordering: Compose custom equivalence relations and ordering strategies for complex data.
• Use Case: Create a value object like Point with deterministic equality and stable sorting in sets and maps.

Quick Start

Create a simple Point type using Data.Class and compare two instances for equality.