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ColumnDataIterState

hexane

Struct ColumnDataIterState 

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pub struct ColumnDataIterState<C: ColumnCursor> { /* private fields */ }
Expand description

Serializable snapshot of a ColumnDataIter position.

Created by ColumnDataIter::suspend and restored by try_resume. Resumption returns PackError::InvalidResume if the source ColumnData was mutated after the snapshot was taken.

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impl<C: ColumnCursor> ColumnDataIterState<C>

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pub fn try_resume<'a>( &self, column: &'a ColumnData<C>, ) -> Result<ColumnDataIter<'a, C>, PackError>

Attempts to restore the iterator position in column.

Returns PackError::InvalidResume if column was mutated since ColumnDataIter::suspend.

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