| add_json_format | Adds the json formatting option to the passed url request. | 
| add_path_part | Adds a path part to the given url | 
| create_request | Creates a request with the given path parts. The json format... | 
| dot-goldprice_base_url | Returns the base url for the gold price endpoint. | 
| dot-rates_base_url | Returns the base url for the rates endpoint. | 
| dot-send_gold_endpoint_request | Sends a request and parses the gold price endpoint response. | 
| dot-send_rates_endpoint_request | Sends a request and parses the rates endpoint response. | 
| dot-send_tables_endpoint_request | Sends a request and parses the tables endpoint response. | 
| dot-tables_base_url | Returns the base url for the tables endpoint. | 
| get_current_exchangerate | Retrieves the current exchange rate for the given currency. | 
| get_current_exchangerate_table | Retrieves the current exchange rate table. | 
| get_current_goldprice | Retrieves the current gold price. | 
| get_exchangerate_from | Retrieves the exchange rate from a specific date. | 
| get_exchangerate_from_interval | Retrieves the exchange rates from a specific interval. | 
| get_exchangerate_table_from | Retrieves the exchange rate table from a specific date. | 
| get_exchangerate_tables_from_interval | Retrieves the exchange rate tables from a specific interval. | 
| get_goldprice_from | Retrieves the gold price from a specific date. | 
| get_goldprice_from_interval | Retrieves the gold prices from a specific interval. | 
| get_last_n_exchangerates | Retrieves the last n exchange rates. | 
| get_last_n_exchangerate_tables | Retrieves the last n exchange rate tables. | 
| get_last_n_goldprices | Retrieves the last n gold prices. | 
| get_todays_exchangerate | Retrieves the exchange rate that was published today. | 
| get_todays_exchangerate_table | Retrieves the exchange rate table that was published today. | 
| get_todays_goldprice | Retrieves the gold price that was published today. | 
| is_count | Checks if an object is a positive integer. | 
| is_date | Checks if an object is a date object. | 
| is_integer | Checks if an object is an integer. | 
| is_nbp_api_response | Checks whether the given object is of the class... | 
| nbp_api_base_url | Returns the base url of the nbp api. | 
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