What Rust Can Do That Other Languages Can't, In Six Short Lines http://robert.ocallahan.org/2017/02/what-rust-can-do-that-other-languages.html …
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Replying to @rocallahan
A std::shared_pointer doesn't necessarily have runtime overhead. The optimizer eliminating that overhead is a big part of Swift.
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Replying to @BRIAN_____
Sure, but magic optimizers make performance fragile. Change something and performance mysteriously falls off a cliff.
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Replying to @rocallahan
I doubt we disagree on any of this. Still, I leave the door open to being pleasantly proven wrong by the Swift team.
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Replying to @BRIAN_____ @rocallahan
In particular, Lattner suggested they're considering adding a "break the build if you would add runtime overhead to this" thing.
9:18 PM - 5 Feb 2017
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