HashMap doesn't work with user defined key class
5608
Overriding the java equals() method - not working?
878
What issues should be considered when overriding equals and hashCode in Java?
61972
LinkedHashMap in .NET
19444
Changing HashMap keys during iteration
143691
Freemarker iterating over hashmap keys
68500
hashCode() for an array of objects for use in HashMap
68787
Why The constructor ArrayAdapter(new View.OnKeyListener(){}, int, String[]) is undefined
103930
How to ensure hashCode() is consistent with equals()?
153563
putExtra treeMap returns HashMap cannot be cast to TreeMap android
84165
Custom class NSObject not key value coding compliant
106080
Is the order guaranteed for the return of keys and values from a LinkedHashMap object?
117927
Does it make sense to make std::map key const?
56252
Map implementation with duplicate keys
40587
Why not allow an external interface to provide hashCode/equals for a HashMap?
76086
Why doesn't Java Map extend Collection?
104733
C++ unordered_map using a custom class type as the key
38789
can we check if a key exists in a map in vf page