jsonFoldArray<T, E> function
JsonBuilder<T>
jsonFoldArray<T, E>(
- JsonBuilder<
E> elementBuilder, - T initialValue(),
- T combine(
- T previus,
- E elementValue
Builds a value from a JSON array.
Builds a value for each element using elementBuilder
,
then folds those into a single value using initialValue
and combine
, just like Iterable.fold.
Implementation
JsonBuilder<T> jsonFoldArray<T, E>(
JsonBuilder<E> elementBuilder,
T Function() initialValue,
T Function(T previus, E elementValue) combine) =>
(JsonReader reader) {
reader.expectArray();
var result = initialValue();
while (reader.hasNext()) {
var element = elementBuilder(reader);
result = combine(result, element);
}
return result;
};