asDouble method

double asDouble(String key, { double def = 0, })

Implementation

double asDouble(String key, {double def = 0}) {
  final value = this[key];
  if (value == null) {
    return def;
  }
  if (value is double) {
    return value;
  }
  try {
    String value0 = value.toString();
    if (value0.isEmpty) {
      return 0;
    }
    final double result = double.parse(value0);
    return result;
  } catch (e) {
    _print('json 解析异常,异常值,期望double值:"$key":$value');
  }
  return 0.0;
}