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propellor spin

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Joey Hess 2015-01-25 15:08:40 -04:00
parent 73ad89d973
commit 5d8bd485cb
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doc/todo/RevertableProperty_with_NoInfo.mdwn
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@ -17,5 +17,13 @@ Since only 2 places in the propellor source code currently need to deal
with this, it doesn't currently seem worth making the change, unless a less
intrusive way can be found.
Hmm, if RevertableProperty were made a constructor in the Property GADT,
this would need to be done, and that would also allow for
Probably related would be to make RevertableProperty a constructor in the
Property GADT, which would allow more property combinators to work on
RevertableProperties. That would look like:
data Propety i where
...
RProp :: Property i1 -> Property i2 -> Property (CInfo i1 i2)
In this case, there's only one Info/NoInfo encompassing both sides, and
so ensureProperty could only be used on it if both sides were NoInfo.