83e226204d
This PR introduces polymorphic slices in their most basic form. They come with a notation similar to the new range notation. `Subarray` is now also a slice and can produce an iterator now. It is intended to migrate more operations of `Subarray` to the `Slice` wrapper type to make them available for slices of other types, too. The PR also moves the `filterMap` combinators into `Init` because they are used internally to implement iterators on array slices. |
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