LINQ笔记-AsParallel()、SelectMany()、SequenceEqual()、Zip()

personList.AsParallel().Sum(p => p.CompanyID);

Dictionary<int, List<string>> dict = new Dictionary<int, List<string>>();
IEnumerable<string> values = dict.SelectMany(d => d.Value); 

var list2 = teachers.SelectMany(teacher => teacher.Students);

List<int> intList1 = new List<int>() { 1, 2, 3 };
List<int> intList2 = new List<int>() { 2,1,3};            
Console.WriteLine(intList1.SequenceEqual(intList2));//false

 IEnumerable<int> result = intList1.Zip(intList2, (i, j) => {
                return i + j;
            });