New in Rust this week: A new package manager, "move" is gone, "impl Trait for Type" is now required, new fail! macro, 3-9% perf improvement.
@robarnold It's inferred now. Types in which a copy would be more expensive than a move are never copied by default anymore.
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@pcwalton how is the expense determined? -
@robarnold "Requires a malloc to copy" is the basic idea.
End of conversation
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