Overriding Equals/GetHashCode for class in order to use hashset Contains/ExceptWith/UnionWith
12387
What is "Best Practice" For Comparing Two Instances of a Reference Type?
137403
How to best implement Equals for custom types?
21146
Using Statement with Generics: using ISet = System.Collections.Generic.ISet
54156
Elegant ways to support equivalence ("equality") in Python classes
94524
Test of equality (equals and hash code method)
12039
How to find an object with specific field values in a std::set?
3018
Any reason to prefer getClass() over instanceof when generating .equals()?
109626
Is there a built-in method to compare collections?
21883
Difference between HashSet and HashMap?
99777
Bug in List.contains for Id data type?
101173
Testing string equality using hashCode()
22284
How do I create a hash in Ruby that compares strings, ignoring case?
108111
Use Objects.hash() or own hashCode() implementation?
130868
rewrite access to collection to avoid "double" finding
33323
Covering if-else conditions in a Testclass
31650
How do I determine if a class extends another class in Java?
109876
In the msdn guidance on Equals override, why the cast to object in the null check?