- Pharo-users - lists.pharo.org

Re: [Pharo-users] is Renraku general purpose rule checker?

by Juraj Kubelka

Hi, At ESUG 2016, Yuriy showed that someone can use Renraku for any domain (object). So, it is not limited to AST/code based rules. In the recent effort of Benoit, he adds some rules to improve writing and executing test cases experience. This is related to AST/source code, but with more complex logic behind. Juraj > El 22-07-2017, a las 14:44, Peter Uhnak <i.uhnak(a)gmail.com> escribiÃ³: > > Hi, > > I'm looking at Renraku and I wonder, would Renraku be a good start for general-purpose checking? > > E.g. I have a domain, where Person cannot drink if they are underage. > > So I've created a simple ReAbstractRule subclass that does basic check > > SomeRule>>basicCheck: anEntity > ^ anEntity age < 18 > > and also custom Critique. > > So for everything seems that it works well, however I am not sure if there are some potential roadbloacks down the road, because e.g. Renraku is meant only for AST/code based rules. > > Thanks, > Peter >

July 27, 2017

Re: [Pharo-users] Documentation

by phil＠highoctane.be

pillar things: fork and PR Use https://github.com/cdlm/docker-texlive for generating artefacts like PDFs. Edit in any text editor. I am using Vim with pillar syntax. There is some Emacs available but I do not use Emacs. HTH Phil On Jul 26, 2017 22:58, "Jimmie Houchin" <jlhouchin(a)gmail.com> wrote: I am looking at participating in the documentation if that is a good area to plug in. I do not necessarily have the expertise on the subjects, but I can bring fresh eyes and the eyes of a native English speaker. What is the best way to assist? For example I am currently reading the Booklet-uFFI. I have some questions and suggestions. How or to whom do I communicate these? If I modify the UnifiedFFI.pillar file, do I do the normal GitHub pull requests? Or is this process handled via Iceberg? Do I edit them manually in a normal text editor or is there a preferred way within Pharo. Is this process documented somewhere? Or do I need to document it? :) And what about similar for the MOOC? Any guidance or suggestions, and suggestions where you would like help the most are greatly appreciated. Thanks. Jimmie

July 27, 2017

Re: [Pharo-users] NeoJSON "conditional" parsing/mapping

by Sven Van Caekenberghe

Esteban, I had a quick look at the spec you mentioned. I am a bit puzzled though. Result can be anything, so how are you going to map that to specific classes (and why) ? That would require serious prior knowledge and even then, not every situation can be mapped easily to a class. You speak about subclassing NeoJSONObject, which is cool, because it is so flexible, but then why type it further ? If I were you, I would at least start the easy/lazy way. For example you could do NeoJSONObject fromString: '...' And see how far you get. If things get slow, I would look for alternatives. Sven > On 26 Jul 2017, at 02:38, Esteban A. Maringolo <emaringolo(a)gmail.com> wrote: > > Hi Sven, all, > > I'm working on a JSON-RPC client, I started using LtJsonRpcClient, but > since it's based on the "legacy" JSON package I decided to try to > adapt it to use NeoJSON. So I created a NeoJSONRPCClient based on > LtJson... because... why not. > > At its core JSON-RPC is a pretty simple protocol, every response is a > JSON object with a 'result' attribute holding the returned object from > the RPC call, an 'error' one (nil if no error happened), and a few > other ones [1]. > > If I convert the response using the traditional `NeoJSONReader > fromString: responseObject` all the object three is converted to a > Dictionary, and what I want is to be able to: > > 1. Determine whether there was an error in the response > 2. If there was no error, convert the 'result' field to my preferred > class of object instead of a Dictionary. I plan to make my classes > inherit from NeoJSONObject though. > > All the above to avoid the use of an intermediate set of nested > dictionaries (which could be in the thousands). > I understand I could subclass NeoJSONReader to perform that at the > character stream level, but I wanted to ask first whether there is a > pattern/configuration of dealing with something like this. > > Best regards! > > [1] http://www.jsonrpc.org/specification#response_object > > Esteban A. Maringolo >

July 26, 2017

Documentation

by Jimmie Houchin

I am looking at participating in the documentation if that is a good area to plug in. I do not necessarily have the expertise on the subjects, but I can bring fresh eyes and the eyes of a native English speaker. What is the best way to assist? For example I am currently reading the Booklet-uFFI. I have some questions and suggestions. How or to whom do I communicate these? If I modify the UnifiedFFI.pillar file, do I do the normal GitHub pull requests? Or is this process handled via Iceberg? Do I edit them manually in a normal text editor or is there a preferred way within Pharo. Is this process documented somewhere? Or do I need to document it? :) And what about similar for the MOOC? Any guidance or suggestions, and suggestions where you would like help the most are greatly appreciated. Thanks. Jimmie

July 26, 2017

Re: [Pharo-users] Beyond Live Coding

by Jimmie Houchin

Thanks for the reply. Absolutely, I love what you say, "Pharo is yours". Which is why last month I joined the Association. I felt I needed to make the commitment. I had thought I wanted to do BountySource on a monthly basis. I signed up at the Association level but nothing happened with regarding to any membership. So I went ahead and did the Annual fee. But I do like the idea of monthly support. So I may do that again anyway. I would love to see the monthly support via BountySource or directly to the Association whichever is best for you to grow and help sustainability. I have also been thinking about ways to contribute of my time. I am looking at how I can help with documentation type areas. The team that contributes toward Pharo is amazing, especially considering the size. Again thanks. Jimmie On 07/22/2017 05:04 AM, Stephane Ducasse wrote: > Thanks Jimmie. Do not hesitate to improve Pharo, because Pharo is what > we have and each we can make it better. > BTW: it was not my roadmap it is the result of everybody in the team > brainstorming. [snip]

July 26, 2017

Object count/memory usage in Pharo6 WAS Re: Critical issues for Dr. Geo on P6

by Holger Freyther

> On 22. Jul 2017, at 14:00, Hilaire <hilaire(a)drgeo.eu> wrote: > > Hi Holger, > > With Pharo3 I was proceeding like this, by uninstallation of packages. However there is the promise of building from a minimal image, but it is not documented AFAIK. > > By curiosity, what is the size of your resulting image. I see 31mb image size for Pharo3 and 49mb for Pharo6. The changes file is about the same. From the top command on a test system. "pharo" is a Pharo6 VM and image and pharo-vm is the pharo3 system. PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 4206 root 20 0 1056684 74036 1600 S 5.7 1.2 1582:15 pharo-vm 10459 root 20 0 104040 90348 2124 S 5.0 1.5 369:00.29 pharo I looked a bit at memory usage and see if some random changes make a difference * Shrink ZnMimeType ExtensionMaps to a minimum when not handling extensions? * ASTCache reset to get rid of the spotter cache. Not sure if the SessionManager runs ASTCache>>#shutDown properly. It looks like it should but it doesn't? * ByteString compaction? I did strs := ByteString allInstances. str -> strs asSet. The numbers on a not fully clean image are 99874 vs. 42139. I wonder in which hell I end if I use >>#becomeForward: to compact it (I tried this once for GNU Smalltalk and I am sure others tried it before). I think anyone using == on String is using the wrong class? Any good arguments against doing it? I am moving my Pharo6 image into production right now and then will look into setting up CI for Pharo7 with a minimal image. cheers holger

July 26, 2017

Re: [Pharo-users] Critical issues for Dr. Geo on P6

by Holger Freyther

> On 22. Jul 2017, at 12:07, Stephane Ducasse <stepharo.self(a)gmail.com> wrote: > > Hi holger Hey Stef! > "the growth from Pharo3->Pharo6" us too :) > this is why we invested in the bootstrap and this is why we will > remove (and we started) packages and classes. > And this is also why we will continue to repackage the system. yes this is very fascinating for Pharo7. It would be nice if we could track size (image+changes but also ram usage, object count) over time to see our progress. I recently added ordinary metric upload to my "bob-bench.org" test and metric tracking. ;) holger

July 26, 2017

Zinc: Are start and stop meant to be idempotent?

by Herby VojÄÃk

Hi, Looking at ZnServer >> start and ZnSingleThreadedServer >> stop (as ZnServer >> stop is #subclassResponsibility), I had the impression they are meant to be idempotent. The start comment is: "Start me. I will start listening on my port for incoming HTTP connections. If I am running, I will first stop and thus effectively restart" The stop comment is: "Stop me. I will stop listening on my port for incoming HTTP connections. Does nothing when I am not running" So, it seems like both start and stop try to be safe to be sent twice in a row. I did a few Transcript prints: --- 1. just stop: is ok. ZnManagingMultiThreadedServer allInstances do: #stop. ZnServer managedServers do: #unregister. Smalltalk garbageCollect. (ZnServer on: 4998) stop. (ZnServer on: 4997) stop; stop. Transcript show: ZnServer managedServers; cr; show: ZnManagingMultiThreadedServer allInstances; cr. ==> an IdentitySet() an Array(a ZnManagingMultiThreadedServer(stopped 4998) a ZnManagingMultiThreadedServer(stopped 4997)) --- 2. start; stop: is ok. ZnManagingMultiThreadedServer allInstances do: #stop. ZnServer managedServers do: #unregister. Smalltalk garbageCollect. (ZnServer on: 4998) start; stop. (ZnServer on: 4997) start; stop; stop. Transcript show: ZnServer managedServers; cr; show: ZnManagingMultiThreadedServer allInstances; cr. ==> an IdentitySet() an Array(a ZnManagingMultiThreadedServer(stopped 4998) a ZnManagingMultiThreadedServer(stopped 4997)) --- 3. register; start; stop: is ok. ZnManagingMultiThreadedServer allInstances do: #stop. ZnServer managedServers do: #unregister. Smalltalk garbageCollect. (ZnServer on: 4998) register; start; stop. (ZnServer on: 4997) register; start; stop; stop. Transcript show: ZnServer managedServers; cr; show: ZnManagingMultiThreadedServer allInstances; cr. ==> an IdentitySet() an Array(a ZnManagingMultiThreadedServer(stopped 4998) a ZnManagingMultiThreadedServer(stopped 4997)) --- 4. start: is ok. ZnManagingMultiThreadedServer allInstances do: #stop. ZnServer managedServers do: #unregister. Smalltalk garbageCollect. (ZnServer on: 4998) start. (ZnServer on: 4997) start; start. Transcript show: ZnServer managedServers; cr; show: ZnManagingMultiThreadedServer allInstances; cr. ==> an IdentitySet() an Array(a ZnManagingMultiThreadedServer(running 4998) a ZnManagingMultiThreadedServer(running 4997)) 5. register; start: is not ok. ZnManagingMultiThreadedServer allInstances do: #stop. ZnServer managedServers do: #unregister. Smalltalk garbageCollect. (ZnServer on: 4998) register; start. (ZnServer on: 4997) register; start; start. Transcript show: ZnServer managedServers; cr; show: ZnManagingMultiThreadedServer allInstances; cr. ==> an IdentitySet(a ZnManagingMultiThreadedServer(running 4998)) an Array(a ZnManagingMultiThreadedServer(running 4998) a ZnManagingMultiThreadedServer(running 4997)) The last case is not idempotent for #start. With one #start, the server is registered, with two #start's, it is not registered. Shouldn't the last case be idempotent as well? If it is, it is the bug that should be put into issue tracker? Herby

July 26, 2017

Re: [Pharo-users] NeoCSV on Irregular Files

by Esteban A. Maringolo

2017-07-26 13:04 GMT-03:00 Sven Van Caekenberghe <sven(a)stfx.eu>: > I agree. > > If the file is non-homegeneous it is not longer CSV by definition. > > Holding on to the original stream and creating new readers for each section is one option, an other one could be to add a #reset method. > > The big question is how to known when one section begins/ends. In my experience I looked for certain delimiters, like a header row with the field names. Oil & Gas telemetry instruments generate outputs like that, like a concatenation of several CSVs into one, maybe even with a non-csv like header of 10 rows of data. What I had to do to deal with that was either: a) Reading it line by line, buffering the hole "segment" until EOF or the next delimiter is found, or... b) Pre-scanning the whole file, and marking start and end positions of each segment, generating a new readStream with the contents and passed it the CSV parser (which doesn't care nor know about segments). > NeoCSVReader holds a one char buffer, so you could peek for something, just maybe. Then you could discover the section switches while parsing (a bit like #atEnd is used from #upToEnd, add a #atSectionEnd). But it all depends on your specific format. It's harder to do if it is char based, instead of "line" based. Or at least harder to code. Regards! Esteban A. Maringolo

July 26, 2017

Re: [Pharo-users] NeoCSV on Irregular Files

by Sven Van Caekenberghe

I agree. If the file is non-homegeneous it is not longer CSV by definition. Holding on to the original stream and creating new readers for each section is one option, an other one could be to add a #reset method. The big question is how to known when one section begins/ends. NeoCSVReader holds a one char buffer, so you could peek for something, just maybe. Then you could discover the section switches while parsing (a bit like #atEnd is used from #upToEnd, add a #atSectionEnd). But it all depends on your specific format. > On 26 Jul 2017, at 17:45, Esteban A. Maringolo <emaringolo(a)gmail.com> wrote: > > There is no way to perform this with NeoJSON or any other CSV > framework I'm aware of. > > I had to deal with that kind of "format" (which is likely an export > format), and the way to deal with it was to process each "segment" > using a different instance of the CSV reader, the segments where > scanned in the stream using the delimiting heuristics of your choice > (headers, blank lines, etc.), and then each segment was extracted and > passed as argument to the reader of that segment. > > The drawback was that if the file was big there was no way to have "a > stream over a stream" (like a window function), so passing the segment > to the reader implied copying its string contents within the segment > delimiters. > > It's something I already put some thought into, but never had the will > to code and share publicly. > > Regards, > > Esteban A. Maringolo > > > 2017-07-26 12:02 GMT-03:00 Sean P. DeNigris <sean(a)clipperadams.com>: >> I have a CSV file that has several subsections, each with its own format. >> What I'd like to do is parse one, reset the NeoCSVReader, set it up for the >> next section, and continue. I didn't see an API for this. Is it possible? >> Thanks. >> >> >> >> ----- >> Cheers, >> Sean >> -- >> View this message in context: http://forum.world.st/NeoCSV-on-Irregular-Files-tp4956850.html >> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >> >

July 26, 2017