Struct Subspace :: sus :: iter :: IterRefCounter

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struct IterRefCounter final
{ ... };

Reference counting outstanding iterators (and view types since they need to be able to produce iterators) in order to catch iterator invalidation and prevent them from being used afterward. Mutating the collection should check that the count is empty. This is much like a RefCell in Rust, using runtime verfication that modification does not occur while there are outstanding references.

Static Methods

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static auto empty_for_view() -> IterRefCounter
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static auto for_owner() -> IterRefCounter

Methods

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auto count_from_owner() const -> sus::usize

Only valid to be called on owning collections such as Vec.

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auto take_for_owner() & -> IterRefCounter

Resets self to no ref counts, returning a new IterRefCounter containing the old ref counts.

Only valid to be called on owning collections such as Vec.

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auto take_for_view() & -> IterRefCounter

Resets self to no pointer to a ref count, returning a new IterRefCounter containing the old pointetr.

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auto to_iter_from_owner() const -> IterRef

Only valid to be called on owning collections such as Vec.

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auto to_iter_from_view() const -> IterRef

Only valid to be called on non-owning views such as Slice.

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auto to_view_from_owner() const -> IterRefCounter

Only valid to be called on owning collections such as Vec.

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auto to_view_from_view() const -> IterRefCounter

Only valid to be called on non-owning views such as Slice.