May 2021 - Pharo-users - lists.pharo.org

Re: P3 connection error

by Bernhard Pieber

Hi Sven, The explicit form does not work either. All the fields contain safe characters. However, I just found out that I can connect to three other hosts. All four hosts should have the same settings (databases and users), and just one of them does not work. So there must be a difference in the settings after all. I noticed that the error message ends with "SSL offâ. So maybe the problem is related to SSL after all. Just calling #setSSL does not help, though. I get SSL Exception: connect failed [code:-5]. Maybe I am missing some certificates? When I connect with psql, three of the four hosts show this message: psql (12.5, Server 12.6) SSL-Verbindung (Protokoll: TLSv1.2, VerschlÃ¼sselungsmethode: ECDHE-ECDSA-AES128-GCM-SHA256, Bits: 128, Komprimierung: aus) The fourth does not mention SSL. However, only one of the three hosts that show SSL does not work. Really strange. (All of the four hosts work with psql, SQuirreL and DBeaver.) Thanks for your support! Bernhard > Am 18.05.2021 um 20:16 schrieb Sven Van Caekenberghe <sven(a)stfx.eu>: > > > (CC-ing the list) > > Hmm, that should just work. > > Are there any special characters in the username, password or host (non-ascii, URL unsafe characters) ? > > You could try the explicit init form > > P3Client new host: 'host'; user: 'user'; password: 'password'; database: 'database'; yourself. > >> On 18 May 2021, at 19:47, Bernhard Pieber <bernhard(a)pieber.com> wrote: >> >> Hi Sven, >> >> Thank you for the fast response. >> >> Yes, I can connect using the psql client using this command line: >> C:\PostgreSQL\12\bin\psql.exe -h host -U user -d database -p 5432 >> >> I have to enter the password in the command prompt. >> >> The driver URL in SQuirreL is: >> jdbc:postgresql://host:5432/database >> >> User name and password are separate text fields. >> >> pgAdmin also works, by the way. >> >> In P3 I use the long form: >> P3Client new url: 'psql://user:password@host:5432/database'. >> >> Cheers, >> Bernhard >> >>> Am 18.05.2021 um 19:16 schrieb Sven Van Caekenberghe <sven(a)stfx.eu>: >>> >>> >>> Hi Bernard, >>> >>>> On 18 May 2021, at 18:40, Bernhard Pieber <bernhard(a)pieber.com> wrote: >>>> >>>> Hi, >>>> >>>> I have a PostgreSQL database on a remote host which I want to access using P3. I do have a username and a password and can connect via SQuirreL and DBeaver. Both use a JDBC driver. However, when I try to access it via Pharo and P3 I get the infamous "no pg_hba.conf entry for host <my IP address>â error. The thing is that I cannot change the pg_hba.conf file as the server does not belong to me. I wonder why the JDBC driver does not run into this problem when connecting from my IP address? It must do something differently. >>>> >>>> As I have just started playing with P3 (and PostgreSQL to be honest) I may be missing something fundamental. Using #setSSL did not help, by the way. Any other ideas I could try? >>>> >>>> Cheers, >>>> Bernhard >>> >>> This is an interesting problem: to do a remote, over the network, connection this has to be enabled in PostegreSQL in the pg_hba.conf. But since other clients can connect, it would help if you could give me more details regarding their connection settings. I know this could include confidential information, so be careful what you post. >>> >>> You could also try to connect using the command line psql client, from your machine. >>> >>> Sven >> >

May 18, 2021

Re: P3 connection error

by Sven Van Caekenberghe

(CC-ing the list) Hmm, that should just work. Are there any special characters in the username, password or host (non-ascii, URL unsafe characters) ? You could try the explicit init form P3Client new host: 'host'; user: 'user'; password: 'password'; database: 'database'; yourself. > On 18 May 2021, at 19:47, Bernhard Pieber <bernhard(a)pieber.com> wrote: > > Hi Sven, > > Thank you for the fast response. > > Yes, I can connect using the psql client using this command line: > C:\PostgreSQL\12\bin\psql.exe -h host -U user -d database -p 5432 > > I have to enter the password in the command prompt. > > The driver URL in SQuirreL is: > jdbc:postgresql://host:5432/database > > User name and password are separate text fields. > > pgAdmin also works, by the way. > > In P3 I use the long form: > P3Client new url: 'psql://user:password@host:5432/database'. > > Cheers, > Bernhard > >> Am 18.05.2021 um 19:16 schrieb Sven Van Caekenberghe <sven(a)stfx.eu>: >> >> >> Hi Bernard, >> >>> On 18 May 2021, at 18:40, Bernhard Pieber <bernhard(a)pieber.com> wrote: >>> >>> Hi, >>> >>> I have a PostgreSQL database on a remote host which I want to access using P3. I do have a username and a password and can connect via SQuirreL and DBeaver. Both use a JDBC driver. However, when I try to access it via Pharo and P3 I get the infamous "no pg_hba.conf entry for host <my IP address>â error. The thing is that I cannot change the pg_hba.conf file as the server does not belong to me. I wonder why the JDBC driver does not run into this problem when connecting from my IP address? It must do something differently. >>> >>> As I have just started playing with P3 (and PostgreSQL to be honest) I may be missing something fundamental. Using #setSSL did not help, by the way. Any other ideas I could try? >>> >>> Cheers, >>> Bernhard >> >> This is an interesting problem: to do a remote, over the network, connection this has to be enabled in PostegreSQL in the pg_hba.conf. But since other clients can connect, it would help if you could give me more details regarding their connection settings. I know this could include confidential information, so be careful what you post. >> >> You could also try to connect using the command line psql client, from your machine. >> >> Sven >

May 18, 2021

Re: P3 connection error

by Sven Van Caekenberghe

Hi Bernard, > On 18 May 2021, at 18:40, Bernhard Pieber <bernhard(a)pieber.com> wrote: > > Hi, > > I have a PostgreSQL database on a remote host which I want to access using P3. I do have a username and a password and can connect via SQuirreL and DBeaver. Both use a JDBC driver. However, when I try to access it via Pharo and P3 I get the infamous "no pg_hba.conf entry for host <my IP address>â error. The thing is that I cannot change the pg_hba.conf file as the server does not belong to me. I wonder why the JDBC driver does not run into this problem when connecting from my IP address? It must do something differently. > > As I have just started playing with P3 (and PostgreSQL to be honest) I may be missing something fundamental. Using #setSSL did not help, by the way. Any other ideas I could try? > > Cheers, > Bernhard This is an interesting problem: to do a remote, over the network, connection this has to be enabled in PostegreSQL in the pg_hba.conf. But since other clients can connect, it would help if you could give me more details regarding their connection settings. I know this could include confidential information, so be careful what you post. You could also try to connect using the command line psql client, from your machine. Sven

May 18, 2021

P3 connection error

by Bernhard Pieber

Hi, I have a PostgreSQL database on a remote host which I want to access using P3. I do have a username and a password and can connect via SQuirreL and DBeaver. Both use a JDBC driver. However, when I try to access it via Pharo and P3 I get the infamous "no pg_hba.conf entry for host <my IP address>â error. The thing is that I cannot change the pg_hba.conf file as the server does not belong to me. I wonder why the JDBC driver does not run into this problem when connecting from my IP address? It must do something differently. As I have just started playing with P3 (and PostgreSQL to be honest) I may be missing something fundamental. Using #setSSL did not help, by the way. Any other ideas I could try? Cheers, Bernhard

May 18, 2021

New VM, how do I get it

by David Pennington

Hi there. I am currently using v8.0 on a new M1 MacBookAir. When I save the image I keep getting a message telling me that my VM is too old and to download a new one. I have looked in my Pharo Launcher but there is no new one there. What do I do please? David

May 18, 2021

Re: ODBCDriver adapted to uFFI

by StÃ©phane Ducasse

This is cool that you added some tests. I cannot work with system without tests. So I end up always adding some. S. > On 13 May 2021, at 21:46, TomaÅ¾ Turk <tomaz.turk(a)ef.uni-lj.si> wrote: > > Dear all, > > I solved a couple of issues in https://github.com/apiorno/ODBCDriver <https://github.com/apiorno/ODBCDriver>. Until Alvaro finds the time to check the proposed PR, you can play with my clone: https://github.com/eftomi/ODBCDriver <https://github.com/eftomi/ODBCDriver>. A simple example of connecting to the data source is in ODBC-Tests. It connects and returns data on Pharo 8.0 32 and 64 on Win10 64 bit with remote SQL Server. More extensive tests are to be done. > > Best wishes, > Tomaz -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Aurore Dalle FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza Villeneuve d'Ascq 59650 France

May 14, 2021

Re: ODBCDriver adapted to uFFI

by StÃ©phane Ducasse

+ 1 > On 14 May 2021, at 15:32, Sean P. DeNigris <sean(a)clipperadams.com> wrote: > > eftomi wrote >> I solved a couple of issues... > > Thanks, Tomaz! DB access is so important for many business uses... > > > > ----- > Cheers, > Sean > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Aurore Dalle FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza Villeneuve d'Ascq 59650 France

May 14, 2021

Re: ODBCDriver adapted to uFFI

by Sean P. DeNigris

eftomi wrote > I solved a couple of issues... Thanks, Tomaz! DB access is so important for many business uses... ----- Cheers, Sean -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

May 14, 2021

ODBCDriver adapted to uFFI

by TomaÅ¾ Turk

Dear all, I solved a couple of issues in https://github.com/apiorno/ODBCDriver. Until Alvaro finds the time to check the proposed PR, you can play with my clone: https://github.com/eftomi/ODBCDriver. A simple example of connecting to the data source is in ODBC-Tests. It connects and returns data on Pharo 8.0 32 and 64 on Win10 64 bit with remote SQL Server. More extensive tests are to be done. Best wishes, Tomaz

May 13, 2021

Re: NeoCSVReader and wrong number of fieldAccessors

by Sven Van Caekenberghe

There is now the following commit: https://github.com/svenvc/NeoCSV/commit/0acc2270b382f52533c478f2f1585341e39… which should address a couple of issues. > On 22 Jan 2021, at 12:15, jtuchel(a)objektfabrik.de wrote: > > Tim, > > > > > Am 22.01.21 um 10:22 schrieb Tim Mackinnon: >> Iâm not doing any CSV processing at the moment, but have in the past - so was interested in this thread. >> >> @Kasper, canât you just use #readHeader upfront, and do the assertion yourself, and then proceed to loop through your records? It would seem that the Neo caters for what you are suggesting - and if you want to add a helper method extension you have the building blocks to already do this? >> > This is a good idea. One caveat, however: #readHeader in its current implementation does 2 things: > > â¢ read the line respecting each field (thereby, respect line breaks within quoted fields - perfect for this purpose) > â¢ update the number of Columns for further reading (assuming #readHeader's purpose is to interpret the header line) > This second thing is in our way, because it may influence the way the following lines will be interpreted. That is ecactly why I created an issue on github (https://github.com/svenvc/NeoCSV/issues/20) > A method that reads a line without any side effects (other than pushing the position pointer forward to the next line) would come in handy for such scenarios. But you can always argue that this has nothing to do with CSV, because in CSV all lines have the same number of columns, each of them containing the same kind of information, and there may be exactly one header line. Anything else is just some file that may contain CSV-y stuff in it. So I am really not sure if NeoCSV should build lots of stuff for such files. I'd love to have this, but I'd understand if Sven refused to integrate it.... ;-) > > >> The only flaw I can think of, is if there is no header present then I canât recall what Neo does - ideally throws an exception so you can decide what to do - potentially continue if the number of columns is what you expect and the data matches the columns - or you fail with an error that a header is required. But I think you would always need to do some basic initial checks when processing CSV due to the nature of the format? > Right. You'd always have to write some specific logic for this particular file format and make NeoCSV ignore the right stuff... > > > > Joachim > > > > > >> >> Tim >> >> On Fri, 22 Jan 2021, at 6:42 AM, Kasper Osterbye wrote: >>> As it happened, I ran into the exact same scenario as Joachim just the other day, >>> that is, the external provider of my csv had added some new columns. In my case >>> manifested itself in an error that an integer field was not an integer (because new >>> columns were added in the middle). >>> >>> Reading through this whole thread leaves me with the feeling that no matter what Sven >>> adds, there is still a risk for error. Nevertheless, my suggestion would be to add a >>> functionality to #skipHeaders, or make a sister method: >>> #assertAndSkipHeaders: numberOfColumns onFailDo: aBlock given the actual number of headers >>> That would give me a way to handle the error up front. >>> >>> This will only be interesting if your data has headers of cause. >>> >>> Thanks for NeoCSV which I use all the time! >>> >>> Best, >>> >>> Kasper >> > > > -- > ----------------------------------------------------------------------- > Objektfabrik Joachim Tuchel > mailto:jtuchel@objektfabrik.de > > Fliederweg 1 > http://www.objektfabrik.de > > D-71640 Ludwigsburg > http://joachimtuchel.wordpress.com > > Telefon: +49 7141 56 10 86 0 Fax: +49 7141 56 10 86 1 > > > >

May 13, 2021

Re: Looking for more non-trivial example application based on Spec2 to learn from...

by Russ Whaley

Great, Sebastian, thanks. Iâll take a (braver) look into the code soon. Iâll touch base on discord :) On Thu, May 13, 2021 at 10:39 AM Sebastian Jordan <sebastianjmt(a)hotmail.com> wrote: > Hi Russ, > Do not scarry of the WorldMenu item. Any tool can appear in the WorldMenu > if it has a class side method `menuCommandOn:`. Just load the code with > the script that appears in the README. Look at the classes in the packages > and you will see that a lot of them are children of SpPresenter. I do not > know if my tools is a complete example of all Spec framework. But at least > it has all the basics covered. > Let me know if you have any question ð We can talk on Discord too. > > Sebastian > ------------------------------ > *From:* Russ Whaley <whaley.russ(a)gmail.com> > *Sent:* 12 May 2021 12:52 > *To:* Any question about pharo is welcome <pharo-users(a)lists.pharo.org> > > *Subject:* [Pharo-users] Re: Looking for more non-trivial example > application based on Spec2 to learn from... > > Mark & Sebastian, > Sebastian, the link you provided is to a RewriteToolsSet... I don't > understand how this provides insights into a Spec2 solution? - but > admittedly I didn't dig too deep - I saw WorldMenu items and went > 'woah-stop!', lol. I'm hoping there was another link Mark referenced that > perhaps didn't come through my email chain :) > > I REALLY want to learn how others use Spec2 in an integrated way > (interconnected presenters, model refreshes, etc.). I've written 6 apps in > Pharo (all with Spec2 GUI) and I still don't feel as if I'm doing things > correctly. I can 'get things to work' and I'm pretty pleased with them in > general, but I usually run up against the same 'refresh' issues, especially > around notebooks. > > Esteban is a wealth of information and has been very helpful for my basic > understanding - but I can envision him shaking his head at my feeble > attempts and questions (just kidding Esteban!). > > I am VERY interested to review Spec2 code others are successfully using, > so I can hopefully get past whatever brainblock I have in my Spec2 designs. > > ... and I would very much like to be involved in a Spec2 > workshop/session/whatever! > > Happy Pharo-ing! > Russ (whalehead on discord) > > On Wed, May 12, 2021 at 5:32 AM <mark.odonoghue.2010(a)gmail.com> wrote: > > Hi Tim > > Thanks for the suggestion - Iâm aware of the alternative of using a web > application architecture using something like Seaside (and now CodeParadise > too - thanks). > > But Iâm more interested at the moment in getting on top of a more > traditional application for these personal apps I want to build for my > desktop PC. > > My needs may change of course - and Iâm sure will look at doing some web > apps in the future... > > More importantly - YES - it is great to be back in a ST environment again > , and of course it is still so very very addictive !! > > [ Before resuming I spent some time familiarising myself with the > mainstream tools the industry seems to have adopted in the last 10-20 > years. I must say I was quite surprised and even disappointed about the > complexity, verbosity and incomprehensible syntax of some, and the > sloppiness (or is it flexibility?) of others. I really was not keen to have > to pick up one of those again. I had somehow hoped or expected that > language and environment design would have been much slicker and more fully > evolved by nowâ¦] > > Cheers Tim, and thanks for the suggestionâ¦ > > Mark > > > > -- > Russ Whaley > whaley.russ(a)gmail.com > -- Russ Whaley whaley.russ(a)gmail.com

May 13, 2021

Re: Looking for more non-trivial example application based on Spec2 to learn from...

by Sebastian Jordan

Hi Russ, Do not scarry of the WorldMenu item. Any tool can appear in the WorldMenu if it has a class side method `menuCommandOn:`. Just load the code with the script that appears in the README. Look at the classes in the packages and you will see that a lot of them are children of SpPresenter. I do not know if my tools is a complete example of all Spec framework. But at least it has all the basics covered. Let me know if you have any question ð We can talk on Discord too. Sebastian ________________________________ From: Russ Whaley <whaley.russ(a)gmail.com> Sent: 12 May 2021 12:52 To: Any question about pharo is welcome <pharo-users(a)lists.pharo.org> Subject: [Pharo-users] Re: Looking for more non-trivial example application based on Spec2 to learn from... Mark & Sebastian, Sebastian, the link you provided is to a RewriteToolsSet... I don't understand how this provides insights into a Spec2 solution? - but admittedly I didn't dig too deep - I saw WorldMenu items and went 'woah-stop!', lol. I'm hoping there was another link Mark referenced that perhaps didn't come through my email chain :) I REALLY want to learn how others use Spec2 in an integrated way (interconnected presenters, model refreshes, etc.). I've written 6 apps in Pharo (all with Spec2 GUI) and I still don't feel as if I'm doing things correctly. I can 'get things to work' and I'm pretty pleased with them in general, but I usually run up against the same 'refresh' issues, especially around notebooks. Esteban is a wealth of information and has been very helpful for my basic understanding - but I can envision him shaking his head at my feeble attempts and questions (just kidding Esteban!). I am VERY interested to review Spec2 code others are successfully using, so I can hopefully get past whatever brainblock I have in my Spec2 designs. ... and I would very much like to be involved in a Spec2 workshop/session/whatever! Happy Pharo-ing! Russ (whalehead on discord) On Wed, May 12, 2021 at 5:32 AM <mark.odonoghue.2010(a)gmail.com<mailto:mark.odonoghue.2010@gmail.com>> wrote: Hi Tim Thanks for the suggestion - Iâm aware of the alternative of using a web application architecture using something like Seaside (and now CodeParadise too - thanks). But Iâm more interested at the moment in getting on top of a more traditional application for these personal apps I want to build for my desktop PC. My needs may change of course - and Iâm sure will look at doing some web apps in the future... More importantly - YES - it is great to be back in a ST environment again , and of course it is still so very very addictive !! [ Before resuming I spent some time familiarising myself with the mainstream tools the industry seems to have adopted in the last 10-20 years. I must say I was quite surprised and even disappointed about the complexity, verbosity and incomprehensible syntax of some, and the sloppiness (or is it flexibility?) of others. I really was not keen to have to pick up one of those again. I had somehow hoped or expected that language and environment design would have been much slicker and more fully evolved by nowâ¦] Cheers Tim, and thanks for the suggestionâ¦ Mark -- Russ Whaley whaley.russ(a)gmail.com<mailto:whaley.russ@gmail.com>

May 13, 2021

CFP: SLE 2021 - 14th ACM SIGPLAN International Conference on Software Language Engineering

by Andrei Chis

------------------------------------------------------------------------ 14th ACM SIGPLAN International Conference on Software Language Engineering (SLE 2021) October 17-19, 2021 Chicago, Illinois https://conf.researchr.org/home/sle-2021 http://www.sleconf.org/2021 Follow us on twitter: https://twitter.com/sleconf ------------------------------------------------------------------------ We are pleased to invite you to submit papers to the 14th ACM SIGPLAN International Conference on Software Language Engineering (SLE 2021), held in conjunction with SPLASH, GPCE and SAS 2021. Based on the future developments the conference will be hosted in Chicago, Illinois, United States on October 17-19, 2021 or will be held as a virtual event. --------------------------- Scope --------------------------- The ACM SIGPLAN International Conference on Software Language Engineering (SLE) is devoted to the principles of software languages: their design, their implementation, and their evolution. With the ubiquity of computers, software has become the dominating intellectual asset of our time. In turn, this software depends on software languages, namely the languages it is written in, the languages used to describe its environment, and the languages driving its development process. Given that everything depends on software and that software depends on software languages, it seems fair to say that for many years to come, everything will depend on software languages. Software language engineering (SLE) is the discipline of engineering languages and their tools required for the creation of software. It abstracts from the differences between programming languages, modelling languages, and other software languages, and emphasizes the engineering facet of the creation of such languages, that is, the establishment of the scientific methods and practices that enable the best results. While SLE is certainly driven by its metacircular character (software languages are engineered using software languages), SLE is not self-satisfying: its scope extends to the engineering of languages for all and everything. Like its predecessors, the 14th edition of the SLE conference, SLE 2021, will bring together researchers from different areas united by their common interest in the creation, capture, and tooling of software languages. It overlaps with traditional conferences on the design and implementation of programming languages, model-driven engineering, and compiler construction, and emphasizes the fusion of their communities. To foster the latter, SLE traditionally fills a two-day program with a single track, with the only temporal overlap occurring between co-located events. --------------------------- Topics of Interest --------------------------- SLE 2021 solicits high-quality contributions in areas ranging from theoretical and conceptual contributions, to tools, techniques, and frameworks in the domain of software language engineering. Broadly speaking, SLE covers software language engineering rather than engineering a specific software language. Topics of interest include, but are not limited to: * Software Language Design and Implementation - Approaches to and methods for language design - Static semantics (e.g., design rules, well-formedness constraints) - Techniques for specifying behavioral / executable semantics - Generative approaches (incl. code synthesis, compilation) - Meta-languages, meta-tools, language workbenches * Software Language Validation - Verification and formal methods for languages - Testing techniques for languages - Simulation techniques for languages * Software Language Integration and Composition - Coordination of heterogeneous languages and tools - Mappings between languages (incl. transformation languages) - Traceability between languages - Deployment of languages to different platforms * Software Language Maintenance - Software language reuse - Language evolution - Language families and variability * Domain-specific approaches for any aspects of SLE (design, implementation, validation, maintenance) * Empirical evaluation and experience reports of language engineering tools - User studies evaluating usability - Performance benchmarks - Industrial applications --------------------------- Important Dates --------------------------- All dates are Anywhere on Earth. * Mon 5 Jul 2021 - Abstract Submissions * Fri 9 Jul 2021 - Paper Submissions * Wed 1 Sep 2021 - Review Notification * Wed-Fri 1-3 Sep 2021 - Author Response Period * Mon 13 Sep 2021 - Notification * Wed 15 Sept 2021 - Artifact Submissions * Tue 28 Sep 2021 - Artifact Kick-the-tires Author Response * Tue 12 Oct 2021 - Artifact Notification * Sun-Tue 17-19 Oct 2021 - SLE Conference --------------------------- Types of Submissions --------------------------- SLE 2021 solicits three types of papers: * Research papers These are "traditional" papers detailing research contributions to SLE. These papers have a limit of 12 pages, and may optionally include 8 further pages of bibliography/appendices * Tool papers These are papers which focus on the tooling aspects which are often forgotten or neglected in research papers. A good tool paper focuses on practical insights that are likely to be useful to other implementers or users in the future. Any of the SLE topics of interest are appropriate areas for tool demonstrations. Submissions must not exceed 5 pages and may optionally include 1 further page of bibliography / appendices. They may optionally come with an appendix with a demo outline / screenshots and/or a short video/screencast illustrating the tool. The title of a Tool paper must start with "Tool Demo:". *New ideas / vision papers These are papers on forward-looking, innovative research in software language engineering. Our aim here is to accelerate the exposure of the software language engineering community to early yet potentially ground-breaking research results, or to techniques and perspectives that challenge the status quo in the discipline. New ideas / vision papers must not exceed 5 pages, and may optionally include 1 further page of bibliography / appendices. The title of a new ideas / vision papers must start with "New Ideas:" or "Vision:". --------------------------- Artifact Evaluation --------------------------- For the sixth year, SLE will use an evaluation process for assessing the quality of the artifacts on which papers are based to foster the culture of experimental reproducibility. Authors of accepted papers are invited to submit artifacts. For more information, please have a look at the Artifact Evaluation page (http://www.sleconf.org/2021/ArtifactEvaluation.html) --------------------------- Submission --------------------------- Submissions have to use the ACM SIGPLAN Conference Format âacmartâ ( http://sigplan.org/Resources/Author/#acmart-format) please make sure that you always use the latest ACM SIGPLAN acmart LaTeX template( https://www.acm.org/binaries/content/assets/publications/consolidated-tex-t…) and that the document class definition is \documentclass[sigplan,anonymous,review]{acmart}. Do not make any changes to this format! Ensure that your submission is legible when printed on a black and white printer. In particular, please check that colors remain distinct and font sizes in figures and tables are legible. To increase fairness in reviewing, a double-blind review process has become standard across SIGPLAN conferences. In this line, SLE will follow the double-blind process. Author names and institutions should be omitted from submitted papers, and references to the authorsâ own related work should be in the third person. No other changes are necessary, and authors will not be penalized if reviewers are able to infer their identities in implicit ways. All submissions must be in PDF format. Concurrent Submissions: Papers must describe unpublished work that is not currently submitted for publication elsewhere as described by SIGPLANâs Republication Policy ( http://www.sigplan.org/Resources/Policies/Republication) Submitters should also be aware of ACMâs Policy and Procedures on Plagiarism ( http://www.acm.org/publications/policies/plagiarism_policy) Submissions that violate these policies will be desk-rejected. Submission Site: Submissions will be accepted at https://sle21.hotcrp.com/ --------------------------- Reviewing Process --------------------------- All submitted papers will be reviewed by at least three members of the program committee. Research papers and tool papers will be evaluated concerning novelty, correctness, significance, readability, and alignment with the conference call. New ideas / vision papers will be evaluated primarily concerning novelty, significance, readability, and alignment with the conference call. For fairness reasons, all submitted papers must conform to the above instructions. Submissions that violate these instructions may be rejected without review, at the discretion of the PC chairs. --------------------------- Awards --------------------------- * Distinguished paper: Award for most notable paper, as determined by the PC chairs based on the recommendations of the programme committee. * Distinguished reviewer: Award for distinguished reviewer, as determined by the PC chairs. * Distinguished artifact: Award for the artifact most significantly exceeding expectations, as determined by the AEC chairs based on the recommendations of the artifact evaluation committee. --------------------------- Publication --------------------------- All accepted papers will be published in the ACM Digital Library. AUTHORS TAKE NOTE: The official publication date is the date the proceedings are made available in the ACM Digital Library. This date may be up to two weeks prior to the first day of the conference. The official publication date affects the deadline for any patent filings related to published work. --------------------------- Organisation --------------------------- Chairs: * General chair: Eelco Visser, Delft University of Technology, Netherlands * Program co-chair: Dimitris Kolovos, University of York, United Kingdom * Program co-chair: Emma SÃ¶derberg, Lund University, Sweden * Artefact Evaluation co-chair: Elias Castegren, KTH, Sweden * Artefact Evaluation co-chair: Andreas Wortmann, RWTH Aachen University, Germany Program Committee: Vincent Aranega, University of Lille, France Mikhail Barash, University of Bergen, Norway Melanie Bats, Obeo, France David Broman, KTH, Sweden Shigeru Chiba, University of Tokyo, Japan Alfonso de la Vega, University of York, United Kingdom Juan De Lara, Universidad AutÃ³noma de Madrid, Spain Davide Di Ruscio, University of L'Aquila, Italy Marcos Didonet del Fabro, Universidade Federal do ParanÃ¡, Brazil Juergen Dingel, Queen's University, Canada Michalis Famelis, University of Montreal, Canada Bernd Fischer, Stellenbosch University, South Africa Niklas Fors, Lund University, Sweden Antonio Garcia Dominguez, Aston University, United Kingdom Esther Guerra, Universidad AutÃ³noma de Madrid, Spain GÃ¶rel Hedin, Lund University, Sweden Stuart Hutchesson, Independent, United Kingdom Adrian Johnstone, Royal Holloway, United Kingdom Paddy Krishnan, Oracle Labs, Australia James Noble, Victoria University of Wellington, New Zealand Carlos Olarte, ECT UFRN, Brazil JoÃ£o Saraiva, HASLab / INESC TEC and Universidade do Minho, Portugal Anthony Sloane, Macquarie University, Australia Daniel StrÃ¼ber, Radboud University , Netherlands Ulyana Tikhonova, CWI, Netherlands Mark van der Brand, TU Eindhoven, Netherlands Juan Manuel Vara, Universidad Rey Juan Carlos, Spain Ran Wei, Dalian University of Technology, China Bahman Zamani, University of Isfahan, Iran --------------------------- Contact --------------------------- For additional information, clarification, or answers to questions, please contact the Program Chairs (Emma SÃ¶derberg and Dimitris Kolovos).

May 13, 2021

Re: Looking for more non-trivial example application based on Spec2 to learn from...

by Kasper Osterbye

My sheep project - Ovina2 - is now public for other to be scared about. I am on my way out the door, so databases will have to wait until monday when I am back from kayaking. This is the link: https://github.com/kasperosterbye/ovina2 The two main presenters are OvinaHistoryPresenter and OvinaAllSheepsPresenter, I expect they end up living in a single app window in the end. In my view it is about 80% done. Best, Kasper >

May 13, 2021

Re: Looking for more non-trivial example application based on Spec2 to learn from...

by Samuel Teixeira Santos

It would be great ð Em ter., 11 de mai. de 2021 Ã s 13:38, Esteban Lorenzano <estebanlm(a)netc.eu> escreveu: > I am playing with the idea of setting a bunch of techtalk sessions to > "build an application from scratch". > I need to book the time but I think it can be a good idea. > > Esteban >

May 13, 2021

Re: Looking for more non-trivial example application based on Spec2 to learn from...

by Russ Whaley

Mark & Sebastian, Sebastian, the link you provided is to a RewriteToolsSet... I don't understand how this provides insights into a Spec2 solution? - but admittedly I didn't dig too deep - I saw WorldMenu items and went 'woah-stop!', lol. I'm hoping there was another link Mark referenced that perhaps didn't come through my email chain :) I REALLY want to learn how others use Spec2 in an integrated way (interconnected presenters, model refreshes, etc.). I've written 6 apps in Pharo (all with Spec2 GUI) and I still don't feel as if I'm doing things correctly. I can 'get things to work' and I'm pretty pleased with them in general, but I usually run up against the same 'refresh' issues, especially around notebooks. Esteban is a wealth of information and has been very helpful for my basic understanding - but I can envision him shaking his head at my feeble attempts and questions (just kidding Esteban!). I am VERY interested to review Spec2 code others are successfully using, so I can hopefully get past whatever brainblock I have in my Spec2 designs. ... and I would very much like to be involved in a Spec2 workshop/session/whatever! Happy Pharo-ing! Russ (whalehead on discord) On Wed, May 12, 2021 at 5:32 AM <mark.odonoghue.2010(a)gmail.com> wrote: > Hi Tim > > Thanks for the suggestion - Iâm aware of the alternative of using a web > application architecture using something like Seaside (and now CodeParadise > too - thanks). > > But Iâm more interested at the moment in getting on top of a more > traditional application for these personal apps I want to build for my > desktop PC. > > My needs may change of course - and Iâm sure will look at doing some web > apps in the future... > > More importantly - YES - it is great to be back in a ST environment again > , and of course it is still so very very addictive !! > > [ Before resuming I spent some time familiarising myself with the > mainstream tools the industry seems to have adopted in the last 10-20 > years. I must say I was quite surprised and even disappointed about the > complexity, verbosity and incomprehensible syntax of some, and the > sloppiness (or is it flexibility?) of others. I really was not keen to have > to pick up one of those again. I had somehow hoped or expected that > language and environment design would have been much slicker and more fully > evolved by nowâ¦] > > Cheers Tim, and thanks for the suggestionâ¦ > > Mark > -- Russ Whaley whaley.russ(a)gmail.com

May 12, 2021

Re: Bootstrap4 package or Willow

by Sanjay Minni

Thank you Gabriel, As of now I do not have partial page updates to auto push back / sync. Any section of the page update / refresh is triggered explicitly by a button. I will take a shot at Willow for future possibility, hopefully it will not be a steep learning curve though the code in examples are at times daunting (Particularly to find out the overall application flow). gcotelli wrote > I think it mostly depends on the kind of app you're envisioning. > If you're going to do a lot of AJAX and partial updates to the page > without > navigating to new pages I must say that Willow is aimed to ease this kind > of interaction. > If you're thinking of not using so much AJAX, then stick with plain > Seaside > + astares/B4. > > For charting, you can also use ba-st/HighchartsSt wrapper with or without > Willow, or DuneSt/ChartJs. > > Regards, > Gabriel > > On Wed, May 12, 2021 at 7:02 AM Sanjay Minni < > sm@ > > wrote: > >> Hi >> >> this is a slightly open question but I want to have views to help me on >> choose the more appropriate Bootstrap4 package for a large Business >> Application: >> >> A. gh:astares/Seaside-Bootstrap4 ... and ... >> B. gh:ba-st/willow >> >> The application will have mostly >> - single form like UI >> - Form + Multi line UI >> - Flat reports (mostly Tabular text data) but export to PDF/Xlsx >> - Some graphs >> >> >> Thanks >> >> >> >> ----- >> cheers, >> Sanjay >> -- >> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html >> ----- cheers, Sanjay -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

May 12, 2021

Re: Bootstrap4 package or Willow

by Gabriel Cotelli

I think it mostly depends on the kind of app you're envisioning. If you're going to do a lot of AJAX and partial updates to the page without navigating to new pages I must say that Willow is aimed to ease this kind of interaction. If you're thinking of not using so much AJAX, then stick with plain Seaside + astares/B4. For charting, you can also use ba-st/HighchartsSt wrapper with or without Willow, or DuneSt/ChartJs. Regards, Gabriel On Wed, May 12, 2021 at 7:02 AM Sanjay Minni <sm(a)planage.com> wrote: > Hi > > this is a slightly open question but I want to have views to help me on > choose the more appropriate Bootstrap4 package for a large Business > Application: > > A. gh:astares/Seaside-Bootstrap4 ... and ... > B. gh:ba-st/willow > > The application will have mostly > - single form like UI > - Form + Multi line UI > - Flat reports (mostly Tabular text data) but export to PDF/Xlsx > - Some graphs > > > Thanks > > > > ----- > cheers, > Sanjay > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html >

May 12, 2021

Bootstrap4 package or Willow

by Sanjay Minni

Hi this is a slightly open question but I want to have views to help me on choose the more appropriate Bootstrap4 package for a large Business Application: A. gh:astares/Seaside-Bootstrap4 ... and ... B. gh:ba-st/willow The application will have mostly - single form like UI - Form + Multi line UI - Flat reports (mostly Tabular text data) but export to PDF/Xlsx - Some graphs Thanks ----- cheers, Sanjay -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

May 12, 2021

Re: Looking for more non-trivial example application based on Spec2 to learn from...

by mark.odonoghue.2010＠gmail.com

Hi Tim Thanks for the suggestion - Iâm aware of the alternative of using a web application architecture using something like Seaside (and now CodeParadise too - thanks). But Iâm more interested at the moment in getting on top of a more traditional application for these personal apps I want to build for my desktop PC. My needs may change of course - and Iâm sure will look at doing some web apps in the future... More importantly - YES - it is great to be back in a ST environment again , and of course it is still so very very addictive !! \[ Before resuming I spent some time familiarising myself with the mainstream tools the industry seems to have adopted in the last 10-20 years. I must say I was quite surprised and even disappointed about the complexity, verbosity and incomprehensible syntax of some, and the sloppiness (or is it flexibility?) of others. I really was not keen to have to pick up one of those again. I had somehow hoped or expected that language and environment design would have been much slicker and more fully evolved by nowâ¦\] Cheers Tim, and thanks for the suggestionâ¦ Mark

May 12, 2021

Re: Looking for more non-trivial example application based on Spec2 to learn from...

by Tim Mackinnon

Hi Mark - not to distract you, as its good to see someone pushing on the Spec integration with a real use case - but an alternate is a web application. Presumably you are familiar with Seaside but there is another kid in town that Iâve been having a lot of fun with with - CodeParadise - which uses MVP with the UI hosted transparently as minimal client side image (via the magic of Pharo Candle to create a minimal Dom based headless image that runs on the SqueakJS VM) using WebComponents. Iâm still in awe over how this works and brings numerous Smalltalk technologies together (although - seeing Esteban demo a native spec app earlier this month was very cool too). CP is still pretty heavily in development (so the same doc scarcity as well - https://github.com/ErikOnBike/CodeParadise) - but Iâve been helping Erik get Shoelace (https://shoelace.style/components/card) working in it - and that has a decent rich set of UI components that you can hook up (there isnât a tree view though - not sure if thatâs some CSS trickery to accomplish this). There was a presentation on it a few months ago - https://vimeo.com/457353130 Anyway - welcome to Pharo and isnât it fun to pick up on Smalltalk again? Tim > On 12 May 2021, at 08:44, mark.odonoghue.2010(a)gmail.com wrote: > > Hi Kasper > > Yes please! - that would also be an interesting project to look atâ¦ > > Cheers > > Mark >

May 12, 2021

Re: Looking for more non-trivial example application based on Spec2 to learn from...

by mark.odonoghue.2010＠gmail.com

Hi Kasper Yes please! - that would also be an interesting project to look atâ¦ Cheers Mark

May 12, 2021

Re: Looking for more non-trivial example application based on Spec2 to learn from...

by Kasper Osterbye

I am currently working on a administrative system to keep track of our sheeps (about 30 ewes and 50-60 lambs a year). It is not finished yet, but if anyone wants I can make the currently private git public or give access.The intended user is my wife who is not an easy customer :-) It uses a sqllite database, and a home rolled orm - I can provide a sample database as well. The code is in English, while the labels and such is in Danish. It tries to strike a balance between generic structures and performance, for example using pragmas in the domain model to drive important parts of the gui. Best, Kasper

May 12, 2021

Re: Looking for more non-trivial example application based on Spec2 to learn from...

by Norbert Hartl

When? :) Iâm in! Norbert > Am 11.05.2021 um 18:39 schrieb Esteban Lorenzano <estebanlm(a)netc.eu>: > > ï»¿ > I am playing with the idea of setting a bunch of techtalk sessions to "build an application from scratch". > I need to book the time but I think it can be a good idea. > > Esteban > > On May 11 2021, at 6:35 pm, mark.odonoghue.2010(a)gmail.com wrote: > Hi Sebastian > > > > Thanks for providing your application - No problems loading it on Windows 10 . > > Your application is pitched at the right level for the GUI work that I need to do. It looks like it will be very useful indeed. > > > > It is also really good to be able to compare it to Estebanâs more complex example, as Iâm sure having both will help me with problem solving and better understanding of the Spec2 framework. > > > > Many thanks :-) > > Mark

May 12, 2021

Re: Looking for more non-trivial example application based on Spec2 to learn from...

by Esteban Lorenzano

hi, ah, those are correct presenters/applications. if you want to make a gtk application at a point you need to configure it (hence CrGtkConfiguration). CrApplicationStarter is because in different platforms you may have different ways of start the application (for example macOS may need a system menu... which anyway so far I have been unable to do, but still ;) ) the other extensions were for needs of the application but indeed some of them may arrive (and some of them already this) to vanilla spec (firstResponder is now "defaultKeyboardFocus", for example...). this application is one of the ones I use to test concepts that may or may not make their path to vanilla Spec :) Esteban On May 11 2021, at 7:30 pm, mark.odonoghue.2010(a)gmail.com wrote: > Hi Esteban > > Iâm new and may be wrong and apologise if so â¦ ! > It just looked like the Crono package has a few things I didnât expect : > CrApplicationStarter > CrGtkConfiguration > > CrWindowConfiguration > > SpPresenter extension firstResponder > > SpWindowPresenter extensions (2) > > These âCrâ classes seem to have some more general purpose behaviours that other SpApplications could use? > And I would have thought the Gtk configuration would be outside Crono too? > Also, presumably the extensions are candidates for repackaging outside/above Crono â¦.? > This may be just a naming and packaging thing rather than any criticism of design. > > In summary, as a simple consumer of the framework there was (some) surprising detail in the Crono package and classes that didnât seem relevant to any new application I would be writing. > Hence I would have hoped not to have to clone these details (or even deal with themâ¦). > Does that sound fair? - or do I have the wrong end of the stick !! > > > Cheers > Mark

May 11, 2021