zipper_algebra: support more zippers#37
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marcin-rzeznicki wants to merge 1 commit intomasterfrom
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A small PR that just extends
ZipperAlgebraExt(z.join()syntax ) andSomeMutRefZ(zipper_join_n!(...)and(z1, z2,...).join) support to more zippers. Concretely,ZipperAlgebraExtis 'implemented' forReadZipperOwnedandPrefixZipper.SomeMutRefZnow coversPrefixZipperforReadZipperUntrackedandReadZipperTracked.Note: There are some limitations:
SomeMutRefZcannot supportReadZipperOwnedbecause it forcesV: 'staticwhich we don't want; it also cannot support arbitraryPrefixZipperbecause it can't be expressed without GADTs (or, at least I don't know how)