getDouble static method
Reads a key
value of double type from Map.
If value/map is NULL or not double type return default value defaultDouble
Example:
getDouble(map,"price") // 27.32
Implementation
static double getDouble(Map<dynamic, dynamic>? map, String key) {
Map<dynamic, dynamic>? data = map;
data ??= <dynamic, dynamic>{};
return data.containsKey(key) ? FxString.toDouble(data[key]) : defaultDouble;
}