This is pretty much a technical mission.
You have raw HTTP cookies. Your mission is to extract the value of a specific cookie by its name.
Input: Two arguments. Both are strings. The first one is the string of raw cookies, and the second one is the name of the cookie we are looking for.
Output: A string. Extracted value.
get_cookie('theme=light; sessionToken=abc123', 'theme') == 'light' get_cookie('_ga=GA1.2.447610749.1465220820; _gat=1; ffo=true', 'ffo') == 'true'