Method extract

Sming/Core/Data/ObjectMap.h:279–283

* @brief Get the value for a given key and remove it from the map, without destroying it * @param key * @retval V* * @note The returned object must be freed by the caller when no longer required */

	 * @note The returned object must be freed by the caller when no longer required
	 */
	V* extract(const K& key)
	{
		int i = indexOf(key);
		return (i < 0) ? nullptr : extractAt(i);
	}

	/**
	 * @brief Get the value at a given index and remove it from the map, without destroying it