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Don’t blindly prefer emplace_back to push_back

(quuxplusone.github.io)
178 points todsacerdoti | 3 comments | 04 Mar 21 08:02 UTC | HN request time: 0.001s | source
1. rq1 ◴[04 Mar 21 09:30 UTC] No.26340401[source]▶

  widgets.emplace_back(foo, bar, baz);
I honestly always thought that was the only way to use emplace_back.
replies(1): >>26340815 #
2. rocqua ◴[04 Mar 21 10:35 UTC] No.26340815[source]▶
I mean, if a copy constructor exists then the other version should obviously also work. But at the same time, it isn't quite how this was meant to be used.
replies(1): >>26341559 #
3. rq1 ◴[04 Mar 21 12:38 UTC] No.26341559[source]▶
Yup indeed. :)