quantityFromJson static method

double? quantityFromJson(
  1. dynamic data
)

Returns a double from a JSON-encoded int or double

Implementation

static double? quantityFromJson(dynamic data) {
  if (data == null || data is double) {
    return data;
  }
  if (data is int) {
    return data.toDouble();
  }
  try {
    return double.parse(data);
  } catch (e) {
    return null;
  }
}