How to implement a getter to return a TMap, but not allowing modification and not doing any copy of it

Development Programming & Scripting C++
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1

Hi!

This is part of Game Instance Subsystem class declaration:


TMap<int32, TSharedRef<FMyStruct>> GetMyData();

private:
    TMap<int32, TSharedRef<FMyStruct>> MyData;

I want to allow read the variable MyData, but without modifying it and without making any copy. How can I do it?

Maybe, this way:

const TMap<int32, TSharedRef<FMyStruct>>& GetMyData();

Or as an output parameter.

Thanks!

2

Yes, you would return a const& parameter. You would also mark your function as const so that clients with a const pointer could call it. so the full signature would be:

const TMap< >& GetMyData() const;