putDouble abstract method
Stores a 64-bit floating-point value under the key, replacing any existing value.
key Key to set.
value Value to store.
Example:
// Store double values
_userStorage!.putDouble("user_location_lat", 55.7558);
_userStorage!.putDouble("user_location_lng", 37.6176);
print("Stored double values");
Implementation
void putDouble(String key, double value);