Simplified Number Parser

Description Given a string containing only a minus sign (-) and a decimal point (.), write a function to parse and calculate the number represented by this string. Input A string s with a maximum length of 1000, guaranteed to be valid and only contains minus signs and decimal points. Output A float representing the parsed numeric value. Example Input: "-123.45" Output: -123.45 Input: "0.007" Output: 0.007 Constraints The minus sign and decimal point do not repeat. The string contains only one minus sign and it must be at the start of the string, or no minus sign at all. Example Input "-123.45"