Code Style in Effect

Overview

Effect's idiomatic style centers on three core principles:

1. Functional Programming Only - No imperative logic (loops, mutation, conditionals)
2. Schema-First Data Modeling - Define ALL data structures as Effect Schemas
3. Match-First Control Flow - Define ALL conditional logic using Effect Match

Additional patterns include:

• Branded types - Nominal typing for primitives (built into Schema)
• Dual APIs - Both data-first and data-last
• Generator syntax - Effect.gen for readability
• Project organization - Layers, services, domains

Core Principles