Unordered amp=hash function for custom class

#1

What is the need of hash function and why we created a hashfunction class instead if creating a hash function simply inside student class?

#2

Hey @shubhangis248

Compiler has zero idea about user defined datatype , so it is always our responsibility to teach compiler how to hash it or how to compare them etc.

And that is why we are writing code for the same and passing it as an argument to the map,
now map will use this logic for hashing and comparision.

This is syntax/rules u have to follow

#3

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