SubValue<T> constructor

SubValue<T>({ required SubValueCreate<T> create, SubValueKeys? keys, SubValueUpdate<T>? update, SubValueDispose<T>? dispose, required SubValueBuild<T> builder, })

Creates, recreates, updates and disposes a Value T.

See also:

• SubValue.builder, which also passes BuildContext.

Implementation

SubValue({
  required SubValueCreate<T> create,
  SubValueKeys? keys,
  SubValueUpdate<T>? update,
  SubValueDispose<T>? dispose,
  required this.builder,
})  : create = ((context) => create()),
      keys = keys != null ? ((context) => keys) : null,
      update =
          update != null ? ((context, previous) => update(previous)) : null,
      dispose = dispose != null ? ((context, value) => dispose(value)) : null,
      super(key: null);