Don't blindly prefer `emplace_back` to `push_back`

Submitted ⁨⁨1⁩ ⁨year⁩ ago⁩ by ⁨bot@lemmy.smeargle.fans [bot]⁩ to ⁨hackernews@lemmy.smeargle.fans⁩

https://quuxplusone.github.io/blog/2021/03/03/push-back-emplace-back/