I agree that the auto keyword should be used sparingly. Things you mention like the output of make_unique and make_shared are a good exception since it is very

I agree that the auto keyword should be used sparingly. Things you mention like the output of make_unique and make_shared are a good exception since it is very clear what the resulting type is. Also, one might use auto to store a lambda in a local variable because it does not have a type that you can type.