json<T> static method

Prf<T> json<T>(String key, { required T fromJson(Map<String, dynamic> json), required Map<String, dynamic> toJson(T object), T? defaultValue, })

Creates a new preference for a JSON-serializable object.

This factory method sets up a Prf instance with a JsonAdapter for converting between the object and its JSON representation.

• key is the key to store the preference under.
• fromJson converts a JSON map to an instance of type T.
• toJson converts an instance of type T to a JSON map.
• defaultValue is the value to use if no value exists for the key.

Implementation

static Prf<T> json<T>(
  String key, {
  required T Function(Map<String, dynamic> json) fromJson,
  required Map<String, dynamic> Function(T object) toJson,
  T? defaultValue,
}) {
  return Prf._withAdapter(
    key,
    adapter: JsonAdapter<T>(fromJson: fromJson, toJson: toJson),
    defaultValue: defaultValue,
  );
}