some best practices

best_practices.md

• Pattern match.
• Keep consistent level of abstraction per function.
• Don't mix pure functions with IO functions. Segregate.
• Build upon ubiquituous domain language.
• Define Interfaces for service layer around infrastructure and application.
• Partial function composition == Dependency Injection. But it is not a preferred functional pattern.
• Don't YAGNI
• If you find yourself passing parameters and adding conditional..the abstraction is incorrect.
• Build upon these foundational low-level architectural design patterns:
  • Value objects, Business Domains, Service Layers
  • Ports and adapters
  • Concurrent & Isolated Processes.
  • Moular functional composition
  • Segregated Command-Query State
  • Enforce immutable contracts