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need help i created a map of unique_ptr std::map<std::unique_ptr<class

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need help i created a map of unique_ptr std::map<std::unique_ptr<class

Gopal

5yAsked Mar 9, 2021, 10:45 AM1.7k

need help i created a map of unique_ptr std::map, std::unique_ptr> now while iterating for( auto& [key, val] : mymap) key is const std::unique_ptr and val is std::unique_ptr i don't know its the right way of doing this, i need key as non const ptr

8 Replies

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Gopal5y ago
actually, while writing the ast, all the nodes are unique_ptr, and i am confused with it, need a hash map node, for that i created hash node ast class with std::map hashmap, now for evaluation, i have a eval(unique_ptr); for that i need to do eval(move(key));
Rajanikant Hawaldar5y ago
Why does your map even has unique_ptr as a key to begin with? If you have a unique_ptr you can already get the data that it points to
Gopal5y ago
i mean pop out pairs one by one, as i need to move(key) i might need to change the ds to stack or vector,for that
Rajanikant Hawaldar5y ago
Out of where? Elaborate
Gopal5y ago
can i extract out any pair ?
Rajanikant Hawaldar5y ago
Although you can remove an element and insert a new one
Gopal5y ago
got it, i guess vector work then ?
Rajanikant Hawaldar5y ago
One shall not change the key