Function asking for data from another Function, With different Modules or either within same modules, Data is copied or referenced?

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Variables in elixir are referenced and are immutable until they are asked to mutate.

Message Passing b/w processes : message/data is copied.

When we create a Module and use a Genserver , there are callbacks, and there are Function inside that module

Message Passing b/w processes : message/data is copied. When we create a Module and use a Genserver , there are callbacks which operate on message queue of that genserver. What happens to the methods inside modules how their data is dealt, and Function calls between Function of process , but they are not dependent on message queue??

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Functions (they’re not called methods) on modules are executed in whichever process calls them. For GenServer callbacks is just expected that they’re called by a related GenServer process, but there’s nothing enforcing that.

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Thanks I corrected it,