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Slanterns 2024-06-16 06:31:37 +08:00
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library/core/src/error.rs
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@ -928,7 +928,7 @@ impl<'a, I: MaybeSizedType<'a>> Type<'a> for Ref<I> {
/// An `Option` with a type tag `I`.
///
/// Since this struct implements `Erased`, the type can be erased to make a dynamically typed
/// option. The type can be checked dynamically using `Erased::tag_id` and since this is statically
/// option. The type can be checked dynamically using `Tagged::tag_id` and since this is statically
/// checked for the concrete type, there is some degree of type safety.
#[repr(transparent)]
pub(crate) struct TaggedOption<'a, I: tags::Type<'a>>(pub Option<I::Reified>);