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Allow Option<Id<T>> to use the null pointer optimization #2

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SSheldon opened this issue Nov 7, 2015 · 0 comments
Open

Allow Option<Id<T>> to use the null pointer optimization #2

SSheldon opened this issue Nov 7, 2015 · 0 comments

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@SSheldon
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SSheldon commented Nov 7, 2015

Since Ids will never be null, the representation of Option<Id<T>> can take advantage of this to be the same size as an Id<T>.

Doing this requires the NonZero struct, which is being stabilized with rust-lang/rust#27730.
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