[Haskell-cafe] Module name space question
Hi, I recently asked about what interfaces to implement for a new data type. Following the rule that the last 10% of work take the second 90% of time, some other questions have come up. If anyone wants to look at the code in question: http://www.chr-breitkopf.de/comp/IntervalMap Some time ago, I was looking for a data structure to search in sets of possibly overlapping intervals, and found only Data.SegmentTree, which did not fit my needs (nice term for I did not understand the type signatures). So I started to roll my own IntervalMap implementation. But yesterday I used Hayoo instead of Hoogle for the first time, and found Data.IntervalMap.FingerTree. This has an Interface that I _do_ understand, and, while slightly different from my aims (depite the name, it seems more like a multi-map and does not offer lookup of specific keys), it raises some tasks/questions: Tasks: Benchmark against my implementation, and maybe scrap own if it performs worse. And questions: 1. Why doesn't Hoogle find this? 2. Module name space pollution I would have been so bold to name my module Data.IntervalMap. Now, since even Ross Patterson uses a submodule name instead, what is the accepted practice? If I decide to release my class after all, what should be the name? Data.IntervalMap.RedBlackTree ? Or even Data.IntervalMap.MyDomaindNameOrSomething. An I even have a module Data.IntervalMap.Interval, so if Ross had decided to put his Interval type into a separate module, even FingerTree vs RedBlackTree would not have prevented a name clash. 3. Are there more wothwile operations on this data structure? Data.IntervalMap.FingerTree has 'dominators', which I missed. A function to extract the interval with the largest endpoint might be useful, too. Any more ideas? TIA, Chris ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Module name space question
From: Christoph Breitkopf chbreitk...@googlemail.com Hi, I recently asked about what interfaces to implement for a new data type. Following the rule that the last 10% of work take the second 90% of time, some other questions have come up. If anyone wants to look at the code in question: http://www.chr-breitkopf.de/comp/IntervalMap Some time ago, I was looking for a data structure to search in sets of possibly overlapping intervals, and found only Data.SegmentTree, which did not fit my needs (nice term for I did not understand the type signatures). I can't answer any of your specific questions, although I've published a related structure in the splaytree package (http://hackage.haskell.org/package/splaytree). The interface is minimal, although it suits my needs and I'd be happy to extend it if someone else found it worthwhile. The difference between my data structure (which I've called a RangeSet) and a standard IntervalSet is that overlapping ranges are combined, and if part of a range is deleted, the affected range is modified and possibly split e.g. let set1 = singleton $ range 0 5 set2 = insert (range 2 5) set1 after this, set2 has one node representing the range 0-7. Staying on topic, my package puts everything under `Data.SplayTree.xxx`, which is different from the fingertree package organization. AFAICT the selection of one convention over the other is fairly arbitrary, although more packages seem to use the one second-level hierarchy structure (e.g. bytestring, text, containers). John L. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Module name space question
I don't know why Hoogle didn't find one of the packages. I've often wondered about this related question: * Is there a place to browse the union of all namespaces in all hackage packages? This would show the global Haskell/Hackage namespace as it currently stands and I think would be useful for a number of different purposes. -Ryan On Mon, Dec 12, 2011 at 8:10 AM, Yitzchak Gale g...@sefer.org wrote: Christoph Breitkopf wrote: If anyone wants to look at the code in question: http://www.chr-breitkopf.de/comp/IntervalMap Looks interesting, thanks! 3. Are there more wothwile operations on this data structure? Have a look at ranged sets: http://hackage.haskell.org/package/Ranged-sets Perhaps that will inspire you with some more ideas. Regards, Yitz ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Module name space question
On 12/12/11 9:32 AM, Ryan Newton wrote: I don't know why Hoogle didn't find one of the packages. I've often wondered about this related question: * Is there a place to browse the union of all namespaces in all hackage packages? There is, and it's awesome: http://folk.ntnu.no/hammar/explore-hackage/ Though it can be a bit slow to load, so try not to hammer the server too hard :) -- Live well, ~wren ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Module name space question
You can try the Haskell Browser in the Eclipse plug-in. 2011/12/12 wren ng thornton w...@freegeek.org On 12/12/11 9:32 AM, Ryan Newton wrote: I don't know why Hoogle didn't find one of the packages. I've often wondered about this related question: * Is there a place to browse the union of all namespaces in all hackage packages? There is, and it's awesome: http://folk.ntnu.no/hammar/**explore-hackage/http://folk.ntnu.no/hammar/explore-hackage/ Though it can be a bit slow to load, so try not to hammer the server too hard :) -- Live well, ~wren __**_ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/**mailman/listinfo/haskell-cafehttp://www.haskell.org/mailman/listinfo/haskell-cafe ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Module name space question
There is, and it's awesome: http://folk.ntnu.no/hammar/**explore-hackage/http://folk.ntnu.no/hammar/explore-hackage/ Though it can be a bit slow to load, so try not to hammer the server too hard :) Awesome indeed! Can we convince Andreas to have it update regularly? Looks like the last update was in May. Mike S Craig On Mon, Dec 12, 2011 at 3:45 PM, wren ng thornton w...@freegeek.org wrote: On 12/12/11 9:32 AM, Ryan Newton wrote: I don't know why Hoogle didn't find one of the packages. I've often wondered about this related question: * Is there a place to browse the union of all namespaces in all hackage packages? There is, and it's awesome: http://folk.ntnu.no/hammar/**explore-hackage/http://folk.ntnu.no/hammar/explore-hackage/ Though it can be a bit slow to load, so try not to hammer the server too hard :) -- Live well, ~wren __**_ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/**mailman/listinfo/haskell-cafehttp://www.haskell.org/mailman/listinfo/haskell-cafe ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
