From Dictionary<int,List<Tuple<string,object>>> to Dictionary<int,List<Tuple<string,object,AnEnum>>> with LINQ

Question

Let's say I have a Dictionary<int,List<Tuple<string,object>>> d . How could I create with LINQ, from d , a Dictionary<int,List<Tuple<string,object,AnEnum>>> d' (where AnEnum is an enum ) such that each AnEnum from Tuple<string,object,AnEnum> is determined by conditions on the <Tuple<string,object> ?

Remark. It's indeed quite a nested structure. Just to explain : in my world there are products that are caracterized by id's ( int 's), and that have fields (named with string 's) whose values are either numeric of string 's -- hence the object in the Tuple 's. I have an api that to a list of id's List<int> and a list of fields List<string> associates a Dictionary<int,List<Tuple<string,object>>> . According to the values of certains fields, I can know which "type" of product I am dealing with, type that I flag with an enum .

Answer 1

Umm maybe something like this:

d.ToDictionary(pair => pair.Key, 
               pair => pair.Value.Select(tuple => 
                              tuple.Create(tuple.Item1,
                                           tuple.Item2,                                                                                                     
                                           ConvertToEnum(tuple))).ToArray());