public void TestingSequences()
{
Employee p1 = new Employee()
{
Id = 1
};
Employee p2 = new Employee()
{
Id = 1
};
// Equals will return true for two objects that reference the same objects.
Console.WriteLine("p1 equals p1 -> {0}", p1.Equals(p1));
// It will not return true if the objects have the same values
// but have different references (are differenct objects)
Console.WriteLine("p1 equals p2 -> {0}", p1.Equals(p2));
Console.WriteLine();
var listOneP1 = new List <Employee> {
p1
};
var listTwoP1 = new List <Employee> {
p1
};
// SequenceEqual will return true for two sequences that reference the same objects.
// (There is only one instance of p1)
Console.WriteLine("listOneP1 equals listTwoP1 -> {0}", listOneP1.SequenceEqual(listTwoP1));
var listThreeP2 = new List <Employee> {
p2
};
// It will not return true if the objects have the same values but have different references
Console.WriteLine("listOneP1 equals listThreeP2 -> {0}", listOneP1.SequenceEqual(listThreeP2));
Console.WriteLine();
// unless... you implement IEquatable<T> and specify which properties to compare
Stop stop1 = new Stop {
StopID = 1
};
Stop stop2 = new Stop {
StopID = 1
};
var listOneStop1 = new List <Stop> {
stop1
};
var listTwoStop2 = new List <Stop> {
stop2
};
Console.WriteLine("listOneStop1 equals listTwoStop2 -> {0}", listOneStop1.SequenceEqual(listTwoStop2));
Console.WriteLine();
// fyi, constructor populates collection with some stops
var stops1 = new Stops();
var stops2 = new Stops();
// this will be true because Stop implements IEquatable<T>
Console.WriteLine("stops1 equals stops2 -> {0}", stops1.SequenceEqual(stops2));
Console.WriteLine();
//var s1 = "tony";
//var s2 = "tony";
//Console.WriteLine("s1 equals s2 -> {0}", s1.Equals(s2));
}
