Poly/ML May 2013

polyml@lists.polyml.org

2 participants
4 discussions

Inspecting structures
by ramana.kumar＠gmail.com 27 Jan '16

27 Jan '16

Is there a way to look at the contents (i.e. signature) of a structure without opening it? (I suppose you could just open it then call a lot of PolyML.Compiler.forgetXXX, but that's quite tedious) Also, is it possible to retrieve the long path of an identifier in scope? Something that will, for example, take the rev in scope and say that it came from List. Finally, what about searching for an identifier that would come into scope if you opened some structures?

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[Fwd: Re: [polyml] Building Poly/ML on MacOS X 10.6]
by rda＠lemma-one.com 29 Dec '14

29 Dec '14

I wrote: > I am completely baffled. I thought I hada solved all my problems on > MacOS X > 10.6 and was just tidying up, when I had to recompile a 32 bit > version of > Poly/ML to test a tidied up make file. This failed because > PolyML.Compiler.printTypesWithStructureName no longer exists. The same > problem happened when i rebuild a 64 bit version. What has happened? but it was a false alarm: my make file was wrong for other reasons and the absence of PolyML.Compiler.printTypesWithStructureName was not relevant. No doubt there are good reasons why this variable has been withdrawn. Regards, Rob.

3 6

Sourceforge and SVN
by David.Matthews＠prolingua.co.uk 24 Jun '13

24 Jun '13

I have "upgraded" the Poly/ML site on SourceForge (there didn't seem to be any choice) and as a consequence the subversion site has changed. Anyone who is following Poly/ML SVN will need to change to the new site. For trunk this is svn checkout svn://svn.code.sf.net/p/polyml/code/trunk polyml and for the 5.5 fixes branch svn co svn://svn.code.sf.net/p/polyml/code/fixes-5.5 polyml I am currently working on the stages of the compiler that process and optimise the intermediate code. These are parts of the compiler that haven't been looked at for a very long time and some of it was obviously translated automatically from my original Poly code back in the 1980s. I tend to commit changes fairly regularly rather than accumulate a long set of changes and commit all at once. This does mean that things could be broken and only fixed by a later commit but it makes it much easier to find a bug if it shows up much later. Season's greetings and best wishes for the New Year, David

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(no subject)
by jesus-maria.aransay＠unirioja.es 24 May '13

24 May '13

Dear all, this is my first mail to the list, so first I wanted to say hello and kindly ask you for forgiveness if I break any conventions that usually apply in the list. We were doing some program performance testing with Poly ML 5.5 and we detected the following behavior when trying to use the information provided by "PolyML.timing" (I tried to produce a toy example). fun fact (n : int) = (if n = 0 then 1 else n * fact (n -1 )); PolyML.timing true; open TextIO; val foo = openOut ("foo"); open Int; output (foo, toString (fact (10000))); The last function returns a "run" time of "0.1" in a Linux machine, but "11.7" (approx) in our Windows machine, when the real time can be checked in both machines to be of the order of "0.1" (actually, the Windows machine in our case has much better hardware and is indeed faster in computations, this is the reason why we wanted to stick to it). Somehow, the timing information provided in the Windows machine is not correct. It scales to greater computations, where 200 seconds of real run time are shown in Windows as maybe 2000. In our Linux machine we have used the polyml version shipped with Isabelle 2013, whereas in the Windows machine we are using the binary version for Windows obtained from sourceforge. Are we doing anything wrong? Is this a known issue? Thanks for any hints, Jesus -- Jes?s Mar?a Aransay Azofra Universidad de La Rioja Dpto. de Matem?ticas y Computaci?n tlf.: (+34) 941299438 fax: (+34) 941299460 mail: jesus-maria.aransay at unirioja.es ; web: http://www.unirioja.es/cu/jearansa Edificio Luis Vives, c/ Luis de Ulloa s/n, 26004 Logro?o, Espa?a

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Poly/ML May 2013