4 ms·
Why would you ever use or see the latter? Fabricated examples aren't helpful.
by shaklee3 7y ago
Why would you ever use or see the latter? Fabricated examples aren't helpful.
- deleted 7y ago[deleted]
- saagarjha 7y agoNot sure why this was downvoted, decltype was introduced with C++11 alongside of auto for declarations: the example given isn't accurate of reality. A better one might be a function returning auto vs returning decltype(some expression).
- detaro 7y agoWhich specific example is choosen doesn't seem all that relevant for the point of "there's these two similar but not identical things people have to/might not understand the difference of"
- saagarjha 7y agoPicking an example that never occurs is not relevant, because nobody needs to learn the thing that never comes up in practice.
- deleted 7y ago[deleted]
- detaro 7y agoBut as you show with your other example, the difference between auto and decltype does come up in practice, even if the example is not a typical one.
- comex 7y agoYou wouldn't... ...instead you'd use "decltype(auto) v = <expr>", which is equivalent. And people certainly use decltype(auto), or else it wouldn't have been added to the language, 3 years after regular auto.