Enum FilterSelection 

pub(crate) enum FilterSelection<'a> {
    None,
    All {
        len: usize,
    },
    Slices(FilterIterator<Copied<Iter<'a, (usize, usize)>>, SlicesIterator<'a>>),
    Indices(FilterIterator<Copied<Iter<'a, usize>>, IndexIterator<'a>>),
}

Borrowed description of which rows a FilterPredicate selects.

This is used for filtering multiple arrays with the same predicate without having to clone the predicate’s internal data structures (e.g. the list of indices or slices).

Variants

None

No rows are selected

All

All len rows are selected

Fields

len: usize

Slices(FilterIterator<Copied<Iter<'a, (usize, usize)>>, SlicesIterator<'a>>)

Iterator of (start, end) slices, each a run of contiguous selected rows

Indices(FilterIterator<Copied<Iter<'a, usize>>, IndexIterator<'a>>)

Iterator of the indices of the selected rows