Map whose keys are compared using eq
64929
Map of with object references as keys?
152654
Comparing references in Java
94524
Test of equality (equals and hash code method)
131933
On the usage of Java equality operator
134254
Hash key as array to obtain the minimum and maximum numbers if a columns values are equal
15235
Check if a given key already exists in a dictionary
148944
How do you determine if two HashSets are equal (by value, not by reference)?
153758
How to use filter, map, and reduce in Python 3
91868
HashMap should be unsorted but still sorts according to key
97224
Implementing the equals method in java
29095
Concise way to compare against multiple values
51586
Using two (or more) objects as a HashMap key
33215
create a map with keys = fields names and values = query result
108487
What basic operations on a Map are permitted while iterating over it?
140663
Map and Reduce in .NET
68770
How can I find the keys of an object?
7023
Java time-based map/cache with expiring keys