-
Notifications
You must be signed in to change notification settings - Fork 0
/
OverrideEquals.cs
78 lines (53 loc) · 1.59 KB
/
OverrideEquals.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
namespace OverrideEquals
{
public class Program
{
public static void Main()
{
int i = 10;
int j = 10;
System.Console.WriteLine(i == j); // true
System.Console.WriteLine(i.Equals(j)); // true
Customer C1 = new Customer();
C1.FirstName = "Simon";
C1.LastName = "Tan";
Customer C2 = C1;
System.Console.WriteLine(C1 == C2); // true
System.Console.WriteLine(C1.Equals(C2)); // true
Customer C3 = new Customer();
C3.FirstName = "Simon";
C3.LastName = "Tan";
System.Console.WriteLine(C1 == C3); // false
System.Console.WriteLine(C1.Equals(C3)); // true (after overriding ) (false before)
// Reference Equality doesnt equal Value Equality
}
}
public enum Direction
{
East = 1,
West = 2,
North = 3,
South = 4
}
public class Customer
{
public string FirstName { get; set; }
public string LastName { get; set; }
public override bool Equals(object obj)
{
if (obj == null)
{
return false;
}
if (!(obj is Customer))
{
return false;
}
return this.FirstName == ((Customer)obj).FirstName && this.LastName == ((Customer)obj).LastName;
}
public override int GetHashCode()
{
return this.FirstName.GetHashCode() ^ this.LastName.GetHashCode();
}
}
}