April 2017 - Pharo-users - lists.pharo.org

[ANN] Pharo Spring Friday, April 28
by marcus.denker＠inrira.fr April 24, 2017

April 24, 2017

Hi, There will be again a Sprint this Friday. More infos here: https://association.pharo.org/event-2492488

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Pharodays early rate deadline
by Stephane Ducasse April 24, 2017

April 24, 2017

Hi the deadline to register to pharodays is approaching. After 29 of April you will pay more and we will not secure room for the diner. Please register Stef

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Octal multiplication
by nacho April 23, 2017

April 23, 2017

Hello, This could sound like a dumb question, it may be. If I print: 8r3 * 8r3 I get 9. It seems that Pharo converts first to decimal and then performs the multiplication. How do I get the result in octal which should be 8r11? Thanks! ----- Nacho Smalltalker apprentice. Buenos Aires, Argentina. -- View this message in context: http://forum.world.st/Octal-multiplication-tp4943364.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Re: [Pharo-users] PostgreSQL and Pharo 6
by Dimitris Chloupis April 23, 2017

April 23, 2017

thank you Benoit On Mon, Apr 17, 2017 at 4:23 AM Benoit St-Jean via Pharo-users < pharo-users(a)lists.pharo.org> wrote: > ODBC worked fine as well if you don't need native driver access > > ----------------- > BenoÃ®t St-Jean > Yahoo! Messenger: bstjean > Twitter: @BenLeChialeux > Pinterest: benoitstjean > Instagram: Chef_Benito > IRC: lamneth > Blogue: endormitoire.wordpress.com > "A standpoint is an intellectual horizon of radius zero". (A. Einstein) > > > ------------------------------ > *From:* Dimitris Chloupis <kilon.alios(a)gmail.com> > *To:* Any question about pharo is welcome <pharo-users(a)lists.pharo.org> > *Sent:* Sunday, April 16, 2017 4:37 AM > *Subject:* [Pharo-users] PostgreSQL and Pharo 6 > > Hey guys , I play with PostgreSQL and I really like it, sorry Esteban :D > > I am using Python for it but I would like to give access also to Pharo to > my database. I was informed that Garage has a driver for PostgreSQL , is > there any other candidate ? Any advice ? > > >

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[ANN] Prometheas : a Pharo wiki database
by Dimitris Chloupis April 21, 2017

April 21, 2017

Part of my Discord bot as a goal was to add the ability to create database entries so that people can quickly find documentation. It was quite a challenge for me because I had to learn how heroku works, PostgreSQL and all the other things but I did it!!! In any discord channel you have now 3 commands !doc , !docadd , !docremove 1) !doc <search_term> search for a term in the documentation database eg. !doc pharo 2) !docadd <search_term> <content> <tags> <links> add a new entry to the documentation database eg. !docadd "pharo" "Pharo is a modern implementation of Smalltalk" "{'smalltalk','live coding','language'}" "{'squeak','IDE'}" 3)!docremove <search_term> remove a term from database eg. !docremove pharo tags , is for more complex searches in the future, links for sending users to relevant documentation I am also planning to give access to pharo users to the database from inside the pharo image, if its easy enough to use PostgreSQL from inside Pharo. Currently the bot is fully coded in python. The goal is not to create a full documentation but rather quick help tips for fast pointing to the right direction. This is also an invite to experience pharo devs and newcomers to start adding to this database. The database is PostgreSQL , one of the most populars, I have nothing against MongoDB , its just that it works better with heroku where I host the database. But if in the future find a way to do it for free I can move to MongoDB, but no promises. Anyway this was an excuse for me to learn database programming that I had abandoned 25 years ago (DBASE). So have fun with this :)

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example in FFI manual not worked
by Yuriy Babah April 21, 2017

April 21, 2017

Hello everyone, I'm new to Pharo and have tried do example with structure in Unified FFI manual. FFIExternalStructure subclass: #MyStructure instanceVariableNames: '' classVariableNames: '' package: 'FFIDemo' MyStructure class>>#fieldsDesc ^ #( uint8 id; char * struct_name; uint name_length; ) MyStructure rebuildFieldAccessors . -> DoIt -> MessageNotUnderstood What's i do wrong? I do it in Pharo5 and 6, widows and os x. Sorry for my english, it's not my native language.

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example in FFI manual not worked
by Torsten Bergmann April 20, 2017

April 20, 2017

Hi Yuriy, I guess you subclassed your class from the (wrong) class "ExternalStructure" but in the guide it is "FFIExternalStructure". Make sure to accept in the browser: FFIExternalStructure subclass: #MyStructure instanceVariableNames: '' classVariableNames: '' package: 'FFIDemo' instead of ExternalStructure subclass: #MyStructure instanceVariableNames: '' classVariableNames: '' package: 'FFIDemo' to make the class MyStructure a subclass of FFIExternalStructure instead of ExternalStructure. Hope this helps! Bye Torsten

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VM/Image magic numbers (Re: Pharo 6 snap install)
by Ben Coman April 18, 2017

April 18, 2017

The "magic decode for image files" seems related and possibly *very* useful.... http://forum.world.st/magic-decode-for-image-files-td4941712.html#a4941837 Now traditionally the VM has been backward compatible with old Images, but Pharo doesn't necessarily adhere to that and policy IIUC is release specific VM/Image pairs. So does Pharo require extra magic numbers to co-ordinate this? And how would this interact with OpenSmalltalk policy on these magic numbers? cheers -ben On Sat, Apr 15, 2017 at 4:20 AM, Stephane Ducasse <stepharo.self(a)gmail.com> wrote: > > This is what we always have when we release and we freeze it. > The vm 60 will be compatible with latest pharo 60 image. > > > > On Fri, Apr 14, 2017 at 12:09 PM, Luke Gorrie <luke(a)snabb.co> wrote: >> >> On 14 April 2017 at 08:53, Stephane Ducasse <stepharo.self(a)gmail.com> wrote: >>> >>> We always try to have a major release around mid/end of april >> >> >> Once the dust settles, I think it would be wonderful to have this invariant: >> >> - The latest Pharo VM source release is compatible with the latest Pharo image. >> >> This would make it easy for me to help nix users. My job will be to package the latest source release of the VM, period, and I will know that users can use this to run the latest image. I don't have much scope to screw things up and make people sad e.g. by shipping a bad commit from the master branch. >> >> (Of course it makes life harder for you upstream Pharo maintainers. Now updating the VM source release is a blocker for releasing a new image. Could be that this is too constraining in practice, I dunno. I'm just a guy who wants to setup a stable Pharo that I can use to build an application :-)) >> >> >

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best practices for using external files for testing
by Peter Uhnak April 18, 2017

April 18, 2017

Hi, is there a common/best practice for using external files in tests? In my specific case I am interested in git-based projects, where I have a big (~1MB) file stored in repository and I would like to use it in my tests. For GitFileTree project I could presumably use the following to access it: 'OP-XMI' asPackage mcPackage workingCopy repositoryGroup remotes first directory / 'tests' / 'my-test-file.xmi' This will retrieve the MCPackage of the Package and then retireve where it the repo is actually stored on the disk. Are there better ways to do this? Could something similar be done with IceBerg? (p.s. in theory I could compile the entire file (e.g. 1MB) to a method, but that is very ugly to me) Thanks, Peter

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Re: [Pharo-users] PostgreSQL and Pharo 6
by Dimitris Chloupis April 18, 2017

April 18, 2017

If I disable ssl I would make database insecure, but yeah it would not matter so much as the data is not sensitive in any way. I will try that, good idea. On Tue, 18 Apr 2017 at 18:22, Benoit St-Jean via Pharo-users < pharo-users(a)lists.pharo.org> wrote: > Do you absolutely need SSL or you can connect to this server without it? > > Esteban is right : writing a driver from scratch takes quite some time! > It would be way easier to add SSL support to the existing one. > > > > ----------------- > BenoÃ®t St-Jean > Yahoo! Messenger: bstjean > Twitter: @BenLeChialeux > Pinterest: benoitstjean > Instagram: Chef_Benito > IRC: lamneth > Blogue: endormitoire.wordpress.com > "A standpoint is an intellectual horizon of radius zero". (A. Einstein) > > > ------------------------------ > *From:* Dimitris Chloupis <kilon.alios(a)gmail.com> > *To:* Any question about pharo is welcome <pharo-users(a)lists.pharo.org> > *Sent:* Tuesday, April 18, 2017 11:02 AM > > *Subject:* Re: [Pharo-users] PostgreSQL and Pharo 6 > > Sure but most probably I won't do either and abandon the effort. By API I > did not mean to wrap the entire thing only a dozen of functions, the bare > minimum I want to make this work. Including SSL. Will give a try at some > point in the future and if it's easy will do. If not , no big deal. > > There is also the possibility of using the Python library for PostgreSQL > from inside Pharo via my Python IPC API, Atlas. I just did not want to add > Python as dependency for a Pharo library. But for now is the easiest > solution . > On Tue, 18 Apr 2017 at 17:51, Esteban A. Maringolo <emaringolo(a)gmail.com> > wrote: > > All current PostgreSQL drivers are 100% written in Smalltalk, I > haven't used the V3 version (binary), but the V2 is more than good > enough even for production systems. > > Writing a new driver using the libpq shared library might be a fun > project, but a lot of work; maybe it will be more fun adding the > SSL/TLS to the current Smalltalk implementation :) > > Regards, > > Esteban A. Maringolo > > > 2017-04-18 11:19 GMT-03:00 Dimitris Chloupis <kilon.alios(a)gmail.com>: > > Looks like I will have to make my own PostgreSQL API . Nice excuse to > test > > my UFFI skills once more :) > > > > On Tue, 18 Apr 2017 at 16:17, Esteban A. Maringolo <emaringolo(a)gmail.com > > > > wrote: > >> > >> Not that I'm aware of. > >> > >> You can create a ssh tunnel that ciphers the data between your host > >> and the remote server, but you'd need a ssh daemon running in the > >> server host. > >> > >> Regards, > >> > >> Esteban A. Maringolo > >> > >> > >> 2017-04-18 5:09 GMT-03:00 Dimitris Chloupis <kilon.alios(a)gmail.com>: > >> > After some investigation in Heroku documentation, the database > expects a > >> > SSL > >> > connection but it seems the driver does not use SSL , any way to force > >> > Garage to use SSL ? > >> > > >> > On Tue, 18 Apr 2017 at 10:07, Dimitris Chloupis < > kilon.alios(a)gmail.com> > >> > wrote: > >> >> > >> >> I adjusted it for my database and gives me error > >> >> > >> >> EFATAL: no pg_hba.conf entry for host "", user "", database "", SSL > >> >> off > >> >> > >> >> any way to resolved this ? > >> >> > >> >> On Tue, Apr 18, 2017 at 1:24 AM Benoit St-Jean <bstjean(a)yahoo.com> > >> >> wrote: > >> >>> > >> >>> Try this: > >> >>> > >> >>> | sql conn connectionSpec result | > >> >>> sql := 'SELECT * FROM search_terms'. > >> >>> conn := GAConnection new. > >> >>> connectionSpec := GAConnectionArgs > >> >>> hostname: 'localhost' > >> >>> portno: 5432 > >> >>> databaseName: 'sodbxtest' > >> >>> userName: 'sodbxtest' > >> >>> password: 'sodbxtest'. > >> >>> conn connectionArgs: connectionSpec. > >> >>> > >> >>> "Connect to the server" > >> >>> result := conn startup. > >> >>> (result errorResponse isKindOf: GAErrorResponse) ifTrue: [ self halt > >> >>> ]. > >> >>> > >> >>> "Execute your SQL stuff" > >> >>> result := conn execute: sql. > >> >>> (result errorResponse isKindOf: GAErrorResponse) ifTrue: [ self > halt ] > >> >>> ifFalse: [result inspect]. > >> >>> > >> >>> "Disconnect from the server" > >> >>> conn close. > >> >>> > >> >>> > >> >>> ----------------- > >> >>> BenoÃ®t St-Jean > >> >>> Yahoo! Messenger: bstjean > >> >>> Twitter: @BenLeChialeux > >> >>> Pinterest: benoitstjean > >> >>> Instagram: Chef_Benito > >> >>> IRC: lamneth > >> >>> Blogue: endormitoire.wordpress.com > >> >>> "A standpoint is an intellectual horizon of radius zero". (A. > >> >>> Einstein) > >> >>> > >> >>> > >> >>> ________________________________ > >> >>> From: Dimitris Chloupis <kilon.alios(a)gmail.com> > >> >>> To: Benoit St-Jean <bstjean(a)yahoo.com>; Any question about pharo is > >> >>> welcome <pharo-users(a)lists.pharo.org> > >> >>> Sent: Monday, April 17, 2017 5:24 PM > >> >>> > >> >>> Subject: Re: [Pharo-users] PostgreSQL and Pharo 6 > >> >>> > >> >>> Following the instructions here > >> >>> > >> >>> http://guillep.github.io/DBXTalk/garage/installation.html > >> >>> > >> >>> I did > >> >>> > >> >>> Gofer it > >> >>> smalltalkhubUser: 'DBXTalk' project: 'Garage'; > >> >>> configurationOf: 'Garage'; > >> >>> load. > >> >>> > >> >>> > >> >>> (ConfigurationOfGarage project version: '0.5') > >> >>> load: 'postgresV2'. > >> >>> > >> >>> And it did install > >> >>> > >> >>> > >> >>> On Tue, 18 Apr 2017 at 00:02, Benoit St-Jean <bstjean(a)yahoo.com> > >> >>> wrote: > >> >>> > >> >>> Tell me which exact package you loaded (or even better, the exact to > >> >>> load > >> >>> it) and I will test some code against my PostgreSQL server... > >> >>> > >> >>> > >> >>> ----------------- > >> >>> BenoÃ®t St-Jean > >> >>> Yahoo! Messenger: bstjean > >> >>> Twitter: @BenLeChialeux > >> >>> Pinterest: benoitstjean > >> >>> Instagram: Chef_Benito > >> >>> IRC: lamneth > >> >>> Blogue: endormitoire.wordpress.com > >> >>> "A standpoint is an intellectual horizon of radius zero". (A. > >> >>> Einstein) > >> >>> > >> >>> > >> >>> ________________________________ > >> >>> From: Dimitris Chloupis <kilon.alios(a)gmail.com> > >> >>> To: Benoit St-Jean <bstjean(a)yahoo.com>; Any question about pharo is > >> >>> welcome <pharo-users(a)lists.pharo.org> > >> >>> Sent: Monday, April 17, 2017 4:55 PM > >> >>> > >> >>> Subject: Re: [Pharo-users] PostgreSQL and Pharo 6 > >> >>> > >> >>> no conn connect does not work because GAConnection has no such > method. > >> >>> #connect exist in GAPostgresDrive but even if I go that route I get > >> >>> error > >> >>> #OptionAt:IfAbsent: was sent to nil . With this code > >> >>> > >> >>> conn2 := GAPostgresDriver new . > >> >>> conn2 host: 'ec2-**-***-***-185.eu-west-1.compute.amazonaws.com' > >> >>> port: '****' > >> >>> database:'*******' > >> >>> user: '*****' > >> >>> password:''***'. > >> >>> conn2 connect. > >> >>> > >> >>> Is there sample code that connects to online databases ? > >> >>> > >> >>> > >> >>> > >> >>> On Mon, Apr 17, 2017 at 11:18 PM Benoit St-Jean <bstjean(a)yahoo.com> > >> >>> wrote: > >> >>> > >> >>> You have to #connect before executing SQL statements! > >> >>> > >> >>> Something like (in your code): > >> >>> > >> >>> conn connect. > >> >>> > >> >>> ----------------- > >> >>> BenoÃ®t St-Jean > >> >>> Yahoo! Messenger: bstjean > >> >>> Twitter: @BenLeChialeux > >> >>> Pinterest: benoitstjean > >> >>> Instagram: Chef_Benito > >> >>> IRC: lamneth > >> >>> Blogue: endormitoire.wordpress.com > >> >>> "A standpoint is an intellectual horizon of radius zero". (A. > >> >>> Einstein) > >> >>> > >> >>> > >> >>> ________________________________ > >> >>> From: Dimitris Chloupis <kilon.alios(a)gmail.com> > >> >>> To: Benoit St-Jean <bstjean(a)yahoo.com>; Any question about pharo is > >> >>> welcome <pharo-users(a)lists.pharo.org> > >> >>> Sent: Monday, April 17, 2017 3:54 PM > >> >>> Subject: Re: [Pharo-users] PostgreSQL and Pharo 6 > >> >>> > >> >>> Installing from Catalog Browser fails > >> >>> > >> >>> I installed it via the the website instructions, it installs fine > >> >>> > >> >>> But if I use it this way > >> >>> > >> >>> conn := GAConnection new. > >> >>> ca := GAConnectionArgs hostname: > >> >>> 'ec2-**-***-***-185.eu-west-1.compute.amazonaws.com' > >> >>> portno: '****' > >> >>> databaseName:'*******' > >> >>> userName: '*****' > >> >>> password:''***'. > >> >>> conn connectionArgs: ca. > >> >>> conn execute: 'select * from search_terms'. > >> >>> > >> >>> it fails with no connection, is there anything else i need to do ? > >> >>> is there a guide for how to use this ? > >> >>> > >> >>> > >> >>> > >> >>> On Mon, Apr 17, 2017 at 7:30 PM Dimitris Chloupis > >> >>> <kilon.alios(a)gmail.com> > >> >>> wrote: > >> >>> > >> >>> thank you Benoit > >> >>> > >> >>> On Mon, Apr 17, 2017 at 4:23 AM Benoit St-Jean via Pharo-users > >> >>> <pharo-users(a)lists.pharo.org> wrote: > >> >>> > >> >>> ODBC worked fine as well if you don't need native driver access > >> >>> > >> >>> ----------------- > >> >>> BenoÃ®t St-Jean > >> >>> Yahoo! Messenger: bstjean > >> >>> Twitter: @BenLeChialeux > >> >>> Pinterest: benoitstjean > >> >>> Instagram: Chef_Benito > >> >>> IRC: lamneth > >> >>> Blogue: endormitoire.wordpress.com > >> >>> "A standpoint is an intellectual horizon of radius zero". (A. > >> >>> Einstein) > >> >>> > >> >>> > >> >>> ________________________________ > >> >>> From: Dimitris Chloupis <kilon.alios(a)gmail.com> > >> >>> To: Any question about pharo is welcome < > pharo-users(a)lists.pharo.org> > >> >>> Sent: Sunday, April 16, 2017 4:37 AM > >> >>> Subject: [Pharo-users] PostgreSQL and Pharo 6 > >> >>> > >> >>> Hey guys , I play with PostgreSQL and I really like it, sorry > Esteban > >> >>> :D > >> >>> > >> >>> I am using Python for it but I would like to give access also to > Pharo > >> >>> to > >> >>> my database. I was informed that Garage has a driver for PostgreSQL > , > >> >>> is > >> >>> there any other candidate ? Any advice ? > >> >>> > >> >>> > >> >>> > >> >>> > >> >>> > >> >>> > >> >>> > >> >>> > >> > > >> > > > > > >

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