alt Hacker NewsI agree that auto should be used as little as possible. There are good uses, though. It is okay to use when the type is trivially inferred from the code. What is auto in "auto ptr = std::make_shared<MyNiceType>();". Everybody who knows any C++ knows. Also, lambdas do not have a type that can be written down, so it is okay to use auto for them.
I also prefer not to use auto when getting iterators from STL containers. Often I use a typedef for most STL containers that I use. The one can write MyNiceContainerType::iterator.
Pre LLM agents, a trick that I used was to type in
auto var = FunctionCall(...);
Then, in the IDE, hover over auto to show what the actual type is, and then replace auto with that type. Useful when the type is complicated, or is in some nested namespace.