Re: DEPRECATED foldWithKey "Use foldrWithKey instead"

Am 08.12.2010 16:09, schrieb Johan Tibell:

On Wed, Dec 8, 2010 at 3:52 PM, Christian Maeder wrote:

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Could someone (maybe the person who introduced it) simply delete it in the next version (or make a library proposal)?

We added it after a library proposal. The warning was there in the docs already in 0.3. If you prefer a different design, write a library proposal.

Come on, it'll take ages to get this warning out again (or the other points fixed). Meanwhile I already switch off all warnings-deprecations.

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A matching "foldrWithKey" (and foldlWithKey) is missing in Data.IntMap. and folding without keys is also only given via "fold" in Data.Map.

That suggests we should add foldrWithKey and foldlWithKey to IntMap, not remove them from Data.Map. Same goes for the without-key fold in Data.Map.

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Data.Set contains toList and toAscList and the former is rightly not deprecated. (A function toDescList is missing though in Data.Set.)

"Rightly"? You mean: you prefer to have both.

Yes, if I use toList I indicate that I don't care about the order.

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Furthermore, Data.Map.foldrWithKey is not part of the container package that came with ghc-6.10.4.

Why does that matter? It's been in the two latest major version of containers.

ghc-6.10.4 is my production compiler for power-pc and sparc, due to problems with ghc-6.12.3 and ghc-7

Johan