May 2018 - Pharo-users - lists.pharo.org

Re: [Pharo-users] Personal Programming onPharo

by Norbert Hartl

Can you elaborate on what you consider as a kernel? There are always things moving in the pharo world. The last years the virtual machine got some iterations and it is still not fully stable. For pharo it is hard to have it stable because we feel the need that a lot of the existing parts need to be replaced to be useful in these times. Furthermore pharo is also prototyping platform for programming language features. All of these are counter-stability measures. So if you need a stable kernel from native ground up to UI pharo wonât be that thing you are looking for the coming years (if at all). You always need to adopt to change so you need to define your required scope better in order to get an estimate. Norbert > Am 06.05.2018 um 11:31 schrieb Trygve Reenskaug <trygver(a)ifi.uio.no>: > > I'm working on a programing paradigm and IDE for the personal programmer who wants to control his or her IoT. The size of the target audience I have in mind is >100 million. I gave up Squeak long ago as a platform because they obsolete my code faster than I can write it. I have now frozen Squeak 3.10.2 and hope its runtime will survive until I find a better foundation. My hope is that Pharo has a stable kernel that I can build on. According to Stephan, this is not so. Is there any plan for creating a stable Pharo kernel that people can use for building software of lasting value for millions of non-expert users? > --Thanks, Trygve > >> On 05.05.2018 13:53, Stephan Eggermont wrote: >> Iâve taken a look at what would be needed to >> support magma on pharo a few years ago. Chris always told us he uses it >> professionally on squeak and has not enough capacity to keep up with >> changes in pharo without having a customer/maintainer for it. Twice a year >> or so someone asks about magma on pharo and takes a look. AFAIK there are >> no real obstacles to a port, but magma uses a lot of deep implementation >> specifics that will take an experienced smalltalker to deal with, and a lot >> of mailing list archeology as pharo changed a lot since magma worked on >> pharo last >> >> Stephan > > -- > The essence of object orientation is that objects collaborate to achieve a goal. > Trygve Reenskaug mailto: trygver(a)ifi.uio.no > Morgedalsvn. 5A http://folk.uio.no/trygver/ > N-0378 Oslo http://fullOO.info > Norway Tel: (+47) 22 49 57 27

May 6, 2018

How to LAN feature

by Hilaire

Hi, I am looking for advices on a feature I want to develop for Dr. Geo. The need takes place in a LAN, for example in a School computer lab. A teacher and students each run their own instance of Dr. Geo. I want the teacher to be able to share with her students some sketches. Then the students,from their Dr. Geo running instance, can browse and open the sketches shared by the teacher. The user scenario will be like this: - Teacher copies the sketches she wants to share with her students in her DrGeo.app/myShare folder. Then she activates the Dr. Geo share service (from the setting browser for example). - Students start their own instances of Dr. Geo. It automatically scans (in the background preferably) the LAN for any available LAN shares. When a student goes to File>open she can also browse and open the discovered shares. - Ideally students could also save their work on the teacher share. The constraints:Â there is no such things as fixed IP. So the scan is over a subnetwork range. Any advices, reference reading, traps to avoid? Thanks Hilaire -- Dr. Geo http://drgeo.eu

May 6, 2018

Personal Programming onPharo

by Trygve Reenskaug

I'm working on a programing paradigm and IDE for the personal programmer who wants to control his or her IoT. The size of the target audience I have in mind is >100 million. I gave up Squeak long ago as a platform because they obsolete my code faster than I can write it.Â I have now frozen Squeak 3.10.2 and hope its runtime will survive until I find a better foundation. My hope is that Pharo has a stable kernel that I can build on.Â According to Stephan, this is not so. Is there any plan for creating a stable Pharo kernel that people can use for building software of lasting value for millions of non-expert users? --Thanks, Trygve On 05.05.2018 13:53, Stephan Eggermont wrote: > Iâve taken a look at what would be needed to > support magma on pharo a few years ago. Chris always told us he uses it > professionally on squeak and/*has not enough capacity to keep up with changes in pharo without > having a customer/maintainer for it.*/ Twice a year > or so someone asks about magma on pharo and takes a look. AFAIK there are > no real obstacles to a port, but magma uses a lot of deep implementation > specifics that will take an experienced smalltalker to deal with, and a lot > of mailing list archeology as pharo changed a lot since magma worked on > pharo last > > Stephan -- /The essence of object orientation is that objects collaborateto achieve a goal. / Trygve Reenskaug mailto: trygver(a)ifi.uio.no <mailto:%20trygver@ifi.uio.no> Morgedalsvn. 5A http://folk.uio.no/trygver/ N-0378 Oslo http://fullOO.info NorwayÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Tel: (+47) 22 49 57 27

May 6, 2018

Re: [Pharo-users] reading from a named pipe in Pharo

by Siemen Baader

Thanks, I'll check it out! -- Siemen On Sat, May 5, 2018 at 4:26 PM, Mariano Martinez Peck <marianopeck(a)gmail.com > wrote: > Hi Siemen, > > You may want to check the pipe support code in OSSubprocess [1]. Note that > the pipes should work outside of OSSubprocess. You can read the > documentation as well as the unit tests for the pipes. > > Cheers, > > [1] https://github.com/marianopeck/OSSubprocess > > On Sat, May 5, 2018 at 8:29 AM, Siemen Baader <siemenbaader(a)gmail.com> > wrote: > >> Hi, >> >> I'd like to use an external tool to edit HTML code and then store and >> version it in my Pharo image. I'd like to create a named pipe that the >> external application will save to, and then have Pharo watch for whenever >> the named pipe is written to and then execute code to handle the data from >> there. >> >> But I can't find any place to register a callback on FileReference and >> similar classes that will notify Pharo when the named pipe is changed, and >> when the external editor will read from it. Is there any support for this? >> >> I know there are workarounds like polling or reading the file when it is >> used, but I'd prefer to wire things together directly and avoid duplicating >> the data if possible. >> >> thanks, >> Siemen >> > > > > -- > Mariano > http://marianopeck.wordpress.com >

May 6, 2018

Commit request on PBKDF2

by Martin Dias

Hello Udo and PBKDF2 users, Thanks for the PBKDF2 [1] project; it's been useful in the mongotalk project [2]. Now, I write you with a small change proposal due to some problems I have because of name conflicts with classes at Cryptography package [3] (which ConfigurationOfPBKDF2 declares as a dependency). I analyzed what are the concrete dependencies in PBKDF2 to Cryptography: - Core uses SHA1, which is in Pharo at least since Pharo 4.0 - Tests use the ByteArray>>fromHexString: method extension, which could be copied. (BTW also thanks to Christophe Demarey and collaborators for the Dependencies Analyzer, it's very useful!) Then (unless I'm missing something), PBKDF2 doesn't really need Cryptography as dependency. I can commit the changes if you agree (I see the repository is public). It works locally. Regards, MartÃn [1] http://smalltalkhub.com/#!/~UdoSchneider/PBKDF2 [2] https://github.com/pharo-nosql/mongotalk [3] http://smalltalkhub.com/#!/~Cryptography/Cryptography/

May 5, 2018

Re: [Pharo-users] Saving a Smalltalk Project

by Stephan Eggermont

Herbert VojÄÃk <herby(a)mailbox.sk> wrote: > > Idealistic / naive question: is there a test suite for magma on squeak? > Is it hard to port just this test suite as the first step to pharo? There is an extensive test suite. On the magma mailing list there have been enough discussions describing what is needed Stephan

May 5, 2018

Re: [Pharo-users] Saving a Smalltalk Project

by Herbert VojÄÃk

Stephan Eggermont wrote: > Sean P. DeNigris <sean(a)clipperadams.com> wrote: >> OT: It's ironic that Smalltalkers are often accused of NIH syndrome, but the >> first reaction of people from less "productive" languages/systems is to >> rewrite a working Smalltalk app in their language of comfortâ¦ > > Indeed. And rewriting something that also uses an OODB is going to kill > productivity even more. Iâve taken a look at what would be needed to > support magma on pharo a few years ago. Chris always told us he uses it > professionally on squeak and has not enough capacity to keep up with > changes in pharo without having a customer/maintainer for it. Twice a year > or so someone asks about magma on pharo and takes a look. AFAIK there are > no real obstacles to a port, but magma uses a lot of deep implementation > specifics that will take an experienced smalltalker to deal with, and a lot > of mailing list archeology as pharo changed a lot since magma worked on > pharo last Idealistic / naive question: is there a test suite for magma on squeak? Is it hard to port just this test suite as the first step to pharo? > Stephan > > > > >

May 5, 2018

Re: [Pharo-users] reading from a named pipe in Pharo

by Mariano Martinez Peck

Hi Siemen, You may want to check the pipe support code in OSSubprocess [1]. Note that the pipes should work outside of OSSubprocess. You can read the documentation as well as the unit tests for the pipes. Cheers, [1] https://github.com/marianopeck/OSSubprocess On Sat, May 5, 2018 at 8:29 AM, Siemen Baader <siemenbaader(a)gmail.com> wrote: > Hi, > > I'd like to use an external tool to edit HTML code and then store and > version it in my Pharo image. I'd like to create a named pipe that the > external application will save to, and then have Pharo watch for whenever > the named pipe is written to and then execute code to handle the data from > there. > > But I can't find any place to register a callback on FileReference and > similar classes that will notify Pharo when the named pipe is changed, and > when the external editor will read from it. Is there any support for this? > > I know there are workarounds like polling or reading the file when it is > used, but I'd prefer to wire things together directly and avoid duplicating > the data if possible. > > thanks, > Siemen > -- Mariano http://marianopeck.wordpress.com

May 5, 2018

Re: [Pharo-users] Saving a Smalltalk Project

by Stephan Eggermont

Sean P. DeNigris <sean(a)clipperadams.com> wrote: > OT: It's ironic that Smalltalkers are often accused of NIH syndrome, but the > first reaction of people from less "productive" languages/systems is to > rewrite a working Smalltalk app in their language of comfortâ¦ Indeed. And rewriting something that also uses an OODB is going to kill productivity even more. Iâve taken a look at what would be needed to support magma on pharo a few years ago. Chris always told us he uses it professionally on squeak and has not enough capacity to keep up with changes in pharo without having a customer/maintainer for it. Twice a year or so someone asks about magma on pharo and takes a look. AFAIK there are no real obstacles to a port, but magma uses a lot of deep implementation specifics that will take an experienced smalltalker to deal with, and a lot of mailing list archeology as pharo changed a lot since magma worked on pharo last Stephan

May 5, 2018

reading from a named pipe in Pharo

by Siemen Baader

Hi, I'd like to use an external tool to edit HTML code and then store and version it in my Pharo image. I'd like to create a named pipe that the external application will save to, and then have Pharo watch for whenever the named pipe is written to and then execute code to handle the data from there. But I can't find any place to register a callback on FileReference and similar classes that will notify Pharo when the named pipe is changed, and when the external editor will read from it. Is there any support for this? I know there are workarounds like polling or reading the file when it is used, but I'd prefer to wire things together directly and avoid duplicating the data if possible. thanks, Siemen

May 5, 2018