Add support for converting from VL getters and folds #430
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phadej
reviewed
Jun 25, 2021
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| -- | Build a 'Fold' from the van Laarhoven representation. | ||
| foldVL :: FoldVL s a -> Fold s a | ||
| foldVL o = O.foldVL $ \f -> runTraversed . getConst #. o (Const #. Traversed #. f) |
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This looks great. But how to rename foldVL we already have. I don't have any ideas.
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foldVL from Optics.Fold used to be named mkFold. How about that?
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@phadej this is what you wanted in #427.
A small problem here is that
foldVLfromoptics-vlis not the same thing asfoldVLfromoptics-core.