clojure.lang.PersistentVector.TransientVector.assoc C# (CSharp) Метод

            public ITransientAssociative assoc(object key, object val)
            {
                if (Util.IsIntegerType(key.GetType()))
                {
                    int i = Util.ConvertToInt(key);
                    return assocN(i, val);
                }
                throw new ArgumentException("Key must be integer");
            }