parseDouble static method

double? parseDouble(
  1. dynamic value, [
  2. double? defaultValue,
  3. bool acceptNullValueDefaultValue = false
])

Implementation

static double? parseDouble(dynamic value,
    [double? defaultValue, bool acceptNullValueDefaultValue = false]) {
  if (value is double) {
    return value;
  } else if (value is num) {
    return value.toDouble();
  } else if (value is String) {
    return double.tryParse(value) ?? defaultValue;
  } else if (defaultValue != null || acceptNullValueDefaultValue == true) {
    return defaultValue;
  } else {
    throw Exception('Not a double !');
  }
}