December 2017 - Pharo-users

ZnUrls with Non-ASCII characters

by Sean P. DeNigris

'https://en.wiktionary.org/wiki/prÃªt#French' asUrl ==> ZnCharacterEncodingError: ASCII character expected. Ideas? ----- Cheers, Sean -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Dec. 7, 2017

Re: [Pharo-users] [Pharo-dev] [TechTalk] Topics Wanted for 2018!

by Marcus Denker

What about Tuesday 30th Jan? > On 7 Dec 2017, at 02:06, Alexandre Bergel <alexandre.bergel(a)me.com> wrote: > > Hi Marcus! > > Thanks for pushing the community! > If there is a free slot at the end of January, I can do another tech talk on AI technique. I am thinking about a lecture on Genetic Algorithm and Genetic Programming. > > Let me know... > > Alexandre > > >> On Dec 1, 2017, at 7:58 AM, Marcus Denker <marcus.denker(a)inria.fr> wrote: >> >> Hi, >> >> As you know, we are trying to have one Pharo tech-talk per month. >> >> The idea is to use this for >> -> mini âLecturesâ >> -> Demos of interesting Projects >> -> Just some interesting topic to discuss with audio chat on Discord >> >> You can see the past topics here: >> >> http://pharo.org/TechTalk >> >> We will soon define the dates for the first half of 2018. If you want to do a techtalk >> yourself (give a presentation / Demo or moderate a discussion), feel free to contact >> me! You are able to pick a date that works best for you. >> >> >> Marcus > >

Dec. 7, 2017

Re: [Pharo-users] P3 timeout

by Sven Van Caekenberghe

> On 7 Dec 2017, at 11:38, Henrik Sperre Johansen <henrik.s.johansen(a)veloxit.no> wrote: > > Sven Van Caekenberghe-2 wrote >>> On 5 Dec 2017, at 01:00, Pierce Ng < > >> pierce@ > >> > wrote: >>> >>> On Sun, Nov 26, 2017 at 07:17:51PM +0100, Sven Van Caekenberghe wrote: >>>> Added P3Client>>#timeout[:] option (thx Pierce Ng) >>> >>> Thank you, Sven. >>> >>>> About Zdc streams. They have their own default timeout (5 seconds). I >>>> think >>>> it is not a good idea to have global timeout setting, these should be >>>> done >>>> per actual (client) instance. I like relatively short timeouts, so that >>>> I get >>>> faster feedback. >>> >>> Agree. Mine was just a quick hack. >>> >>>> BTW, I am also interested in your experience using P3. How did it go ? >>> >>> Very easy to get going. >> >> Great ! >> >>> I'm querying my server in 'batch' mode, and trying to >>> work out the best mix of Pharo and PostgreSQL code to process the data. >>> As we >>> all know on this list, rapid development with Pharo is productive and >>> fun. >> >> Yes, it is fun. >> >>> Are you planning to implement the advanced query protocol with parameter >>> binding? >> >> Not immediately. It was not needed for Glorp and I doubt a bit that it >> would make much performance difference. Intuitively, query execution time >> and data transfer time feel as the most important, binding the query with >> parameters much less so. >> >> Sven >> >>> Pierce >>> >>> > > For selects, that's probably true. > For inserts however (at least in my experience with Oracle), queries > inserting moderately sized batches (say, 1k rows/transaction), will go from > glacial to blazingly fast, when switched from 1 INSERT per row to a single > insert with bindings containing data for all 1000 rows. > > Similar to using nextPutAll: instead of nextPut: when writing to unbuffered, > flushed files, really ;) Yes, inserting lots of data (usually during (initial) data load) is a special case which might be different. PostgreSQL has special COPY functionality for that. Still, you can put a lot of data in a single INSERT statement as well. What I forgot to say in my previous message was that the rest of the protocol could certainly be added within the current setup, although it would probably make some aspects more complex. Right now, there is no explicit state machine, when adding all the other logic, it will be more difficult to hand code around that. > Cheers, > Henry > > > > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Dec. 7, 2017

Re: [Pharo-users] P3 timeout

by Henrik Sperre Johansen

Sven Van Caekenberghe-2 wrote >> On 5 Dec 2017, at 01:00, Pierce Ng < > pierce@ > > wrote: >> >> On Sun, Nov 26, 2017 at 07:17:51PM +0100, Sven Van Caekenberghe wrote: >>> Added P3Client>>#timeout[:] option (thx Pierce Ng) >> >> Thank you, Sven. >> >>> About Zdc streams. They have their own default timeout (5 seconds). I >>> think >>> it is not a good idea to have global timeout setting, these should be >>> done >>> per actual (client) instance. I like relatively short timeouts, so that >>> I get >>> faster feedback. >> >> Agree. Mine was just a quick hack. >> >>> BTW, I am also interested in your experience using P3. How did it go ? >> >> Very easy to get going. > > Great ! > >> I'm querying my server in 'batch' mode, and trying to >> work out the best mix of Pharo and PostgreSQL code to process the data. >> As we >> all know on this list, rapid development with Pharo is productive and >> fun. > > Yes, it is fun. > >> Are you planning to implement the advanced query protocol with parameter >> binding? > > Not immediately. It was not needed for Glorp and I doubt a bit that it > would make much performance difference. Intuitively, query execution time > and data transfer time feel as the most important, binding the query with > parameters much less so. > > Sven > >> Pierce >> >> For selects, that's probably true. For inserts however (at least in my experience with Oracle), queries inserting moderately sized batches (say, 1k rows/transaction), will go from glacial to blazingly fast, when switched from 1 INSERT per row to a single insert with bindings containing data for all 1000 rows. Similar to using nextPutAll: instead of nextPut: when writing to unbuffered, flushed files, really ;) Cheers, Henry -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Dec. 7, 2017

Re: [Pharo-users] P3 timeout

by Sven Van Caekenberghe

> On 5 Dec 2017, at 01:00, Pierce Ng <pierce(a)samadhiweb.com> wrote: > > On Sun, Nov 26, 2017 at 07:17:51PM +0100, Sven Van Caekenberghe wrote: >> Added P3Client>>#timeout[:] option (thx Pierce Ng) > > Thank you, Sven. > >> About Zdc streams. They have their own default timeout (5 seconds). I think >> it is not a good idea to have global timeout setting, these should be done >> per actual (client) instance. I like relatively short timeouts, so that I get >> faster feedback. > > Agree. Mine was just a quick hack. > >> BTW, I am also interested in your experience using P3. How did it go ? > > Very easy to get going. Great ! > I'm querying my server in 'batch' mode, and trying to > work out the best mix of Pharo and PostgreSQL code to process the data. As we > all know on this list, rapid development with Pharo is productive and fun. Yes, it is fun. > Are you planning to implement the advanced query protocol with parameter binding? Not immediately. It was not needed for Glorp and I doubt a bit that it would make much performance difference. Intuitively, query execution time and data transfer time feel as the most important, binding the query with parameters much less so. Sven > Pierce > >

Dec. 7, 2017

Re: [Pharo-users] Calypso bugs with metalinks in latest 7

by Steven Costiou

> To disable critiques look at Problems section in github Calypso [1] Aw... sorry. I didn't read the whole page before so i didn't see it... thanks. Links: ------ [1] https://github.com/dionisiydk/Calypso#problems

Dec. 7, 2017

Re: [Pharo-users] Calypso bugs with metalinks in latest 7

by Denis Kudriashov

Hi. It looks strange because Calypso do not use Ring classes. To disable critiques look at Problems section in github Calypso <https://github.com/dionisiydk/Calypso#problems> 2017-12-07 10:50 GMT+01:00 Steven Costiou <steven.costiou(a)kloum.io>: > Hi, > > running Reflectivity tests (e.g. ReflectivityReificationTest) provokes > errors and tests fails: > > RGMethodDefinition did not understand #isDeprecated. Seems to be located > in MetaLinkChanged calypso extension (the 4 methods provoke the same bug). > > To reproduce it i used the launcher to get the latest pharo 7 and the > script from here to get Calypso https://github.com/dionisiydk/Calypso > > Also, is it possible to switch off ClyCriticsAnalysis ? I have problems > while experimenting with instance-specific metalinks, and i cannot yet > describe exactly how to reproduce it. I'd like to disable it until i can > fix bugs in my own work before reactivating it... > > > > Steven. >

Dec. 7, 2017

Re: [Pharo-users] Behold Pharo: The Modern Smalltalk

by CÃ©drick BÃ©ler

I also find this way simple and the best to me. curl get.pharo.org/64/ | bash ./pharo-ui Pharo.image Donât really need to say to create a dir or maybe pass it as a parameter in curl. The other way to install through that download one file is nice at first but I find it no convenient especially when doing a âsave asâ... I also have recurrent problem with student on windows (through the first download link) where pharo complains it has no source file (whereas it is there). Cheers, CÃ©drick > Le 7 dÃ©c. 2017 Ã 00:55, Offray Vladimir Luna CÃ¡rdenas <offray.luna(a)mutabit.com> a Ã©crit : > > curl get.pharo.org/64/ | bash > ./pharo-ui Pharo.image

Dec. 7, 2017

Calypso bugs with metalinks in latest 7

by Steven Costiou

Hi, running Reflectivity tests (e.g. ReflectivityReificationTest) provokes errors and tests fails: RGMethodDefinition did not understand #isDeprecated. Seems to be located in MetaLinkChanged calypso extension (the 4 methods provoke the same bug). To reproduce it i used the launcher to get the latest pharo 7 and the script from here to get Calypso https://github.com/dionisiydk/Calypso Also, is it possible to switch off ClyCriticsAnalysis ? I have problems while experimenting with instance-specific metalinks, and i cannot yet describe exactly how to reproduce it. I'd like to disable it until i can fix bugs in my own work before reactivating it... Steven.

Dec. 7, 2017

Re: [Pharo-users] [offtopic] Re: REST client hints

by Paul DeBruicker

Hi Ben, I haven't used it very much. Just some light testing a few years ago. I've just been using piwik.org on my own server and it works OK for now. Someday maybe I'll want to add segment to access other tools but not yet. Paul Ben Coman wrote > btw, SegmentIO seems quite impressive aggregating a huge number of > services. > How have you found the extra level of indirection in practice? > how has your experience been with the sources you've tried? > > cheers -ben > > On 6 December 2017 at 06:06, Ben Coman < > btc@ > > wrote: > >> Thanks Paul. It'll be good to review some concrete implementations, >> and nice to see what services other other people find useful. >> I got a momentary urge the create a Pharo Distribution or catalog entry >> called >> something like "SamplRest" with a GUI to explore available REST data >> sources. >> Marketing angle for Pharo would be helping less technical people get a >> "live" hold of >> data from these sources, and then incrementally script against those live >> objects. >> I guess a bit like SegmentIO but on your own desktop rather than through >> a >> third party. >> (but I've not got the time right now) >> >> cheers -ben >> >> >> On 6 December 2017 at 02:46, Paul DeBruicker < > pdebruic@ > > wrote: >> >>> Hi Ben, >>> >>> >>> I've made a few REST Clients >>> >>> http://smalltalkhub.com/#!/~pdebruic/Stripe >>> http://smalltalkhub.com/#!/~pdebruic/Tropo >>> http://smalltalkhub.com/#!/~pdebruic/SegmentIO >>> >>> And the elasticsearch one but its been advanced mostly lately by Sho >>> Yoshida >>> (https://github.com/newapplesho) here >>> https://github.com/newapplesho/elasticsearch-smalltalk >>> >>> He has also made REST clients for Twilio, AWS, SendGrid, Salesforce, and >>> Mixpanel among others. >>> >>> Norbert Hartl made one for Mandrill (Mailchimps transactional email >>> service) >>> http://smalltalkhub.com/#!/~NorbertHartl/Mandrill >>> >>> And Francois Stephany made one for Postmark (another transactional email >>> service) http://smalltalkhub.com/#!/~PharoExtras/Postmark >>> >>> >>> So those are some examples of different approaches. >>> >>> >>> I also started/made a cross platform web client wrapper (just wraps >>> calls >>> to >>> ZnClient or WebClient on Squeak) >>> http://smalltalkhub.com/#!/~pdebruic/HTTPAPIClient >>> >>> But IIRC I only used it in the Stripe API client. >>> >>> >>> Hope this gives you some ideas about how to approach your own solution >>> >>> Paul >>> >>> >>> >>> Ben Coman wrote >>> > I'm just about to write my first client interface to a REST service. >>> > In some respects I understand this is as simple as doing GET responses >>> > using Zinc, >>> > but I'm inquiring about tutorials or libraries that might help. Most >>> > of the stuff turned up by searches is about server-side of REST. >>> > >>> > cheers -ben >>> >>> >>> >>> >>> >>> -- >>> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html >>> >>> >> -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Dec. 7, 2017