fromJson static method

MetricTimeSeries? fromJson(
  1. dynamic value
)

Returns a new MetricTimeSeries instance and imports its values from value if it's a Map, null otherwise.

Implementation

// ignore: prefer_constructors_over_static_methods
static MetricTimeSeries? fromJson(dynamic value) {
  if (value is Map) {
    final json = value.cast<String, dynamic>();

    // Ensure that the map contains the required keys.
    // Note 1: the values aren't checked for validity beyond being non-null.
    // Note 2: this code is stripped in release mode!
    assert(() {
      return true;
    }());

    return MetricTimeSeries(
      dataPoints: json[r'data_points'] is List
          ? (json[r'data_points'] as List)
              .map((e) =>
                  e == null ? const <double>[] : (e as List).cast<double>())
              .toList()
          : const [],
    );
  }
  return null;
}