{
  "context": "This criteria evaluates how effectively an engineer uses frozendict's copy-on-write modification methods (set, delete, setdefault) to implement a functional-style configuration update system. The focus is on proper usage of these immutable transformation methods rather than general programming practices.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "Uses frozendict",
      "description": "Configuration is stored using frozendict instances, not regular Python dicts or other data structures",
      "max_score": 15
    },
    {
      "name": "Uses set() method",
      "description": "Uses frozendict's set(key, value) method to create new configurations with updated or added keys",
      "max_score": 25
    },
    {
      "name": "Uses delete() method",
      "description": "Uses frozendict's delete(key) method to create new configurations with keys removed",
      "max_score": 25
    },
    {
      "name": "Uses setdefault() method",
      "description": "Uses frozendict's setdefault(key, default) method to conditionally add keys with default values",
      "max_score": 25
    },
    {
      "name": "Preserves immutability",
      "description": "Implementation demonstrates that original configurations remain unchanged after operations, validating the copy-on-write behavior",
      "max_score": 10
    }
  ]
}