Add ordering for Multihash and MultihashRef #50
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rklaehn
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@rklaehn Could you please rebase this change? |
This is just lexicographical byte ordering, which should be very fast in case of multihashes since they usually differ within the first 8 byte word. Ordering is useful to have if you e.g. want to output a set of multihashes in a deterministic way for debugging/testing purposes. Also, many possible storage engines work using lexicographical byte ordering.
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no need for an explicit instance
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@vmx Done. I also let rust derive the PartialOrd for the MultihashRef, since it is perfectly capable of figuring that out on its own... |
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This is just lexicographical byte ordering, which should be very fast
in case of multihashes since they usually differ within the first 8 byte
word.
Ordering is useful to have if you e.g. want to output a set of multihashes
in a deterministic way for debugging/testing purposes. Also, many possible storage engines work using lexicographical byte ordering. And it allows you to use ordering based collections like BTreeSet with multihashes.
This is based on #47 , so should be reviewed once
that is merged.