push-null-to-perimeter

What problem does it solve?

Mixed null states across data structures create implicit relationships and scattered checks, making bugs and maintenance painful. Pushing null handling to the perimeter promotes clean, all-or-nothing types that are either fully present or fully absent.

Core Features & Use Cases

• All-or-nothing types that guarantee complete presence or complete absence after initialization.
• Boundary-pattern approaches with factories, discriminated unions, and safe access patterns to avoid runtime null checks.
• Clear guidance for refactoring complex nullable shapes into cohesive, maintainable designs.

Quick Start

Design all data types to be all-or-nothing—present or absent—at the boundary.