Yes, I think auto for iterators is good but for return types it doesn't help any poor developer left to maintain your code in 20 years time (even 2 years). Dea

Yes, I think auto for iterators is good but for return types it doesn't help any poor developer left to maintain your code in 20 years time (even 2 years). Dealing with an extensive large and complex 5 million line C++ codebase at the moment where many of the original developers have left leaving zero documentation, design documents or specs, or even sensible comments, I truly increasingly cherish readability and understandability of any small portion of code without having to get a holistic overview; I should be able to understand what it's doing in isolation - auto as a return type or as a deduced return type doesn't help me see what something is doing from the calling site without having to wade through reams of other function calls or step into them; I think time will not be kind to it if overused.