April 2020 - Pharo-users - lists.pharo.org

Re: [Pharo-users] Problem downloading images

by tbrunz

Probably your ISP. I was able to download this morning (in Los Angeles), and just downloaded a new image now, late afternoon. Everything running quick & smooth... -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

April 11, 2020

Problem downloading images

by Vitor Medina Cruz

Hello, I am having problem downloading new images through PharoLauncher, it's very slow and around 20% download it tells "ConnectionTimedOut: Data Receive time out". Full stacktrace is below. Actually, I couldn't download the new version of PharoLauncher too, it is very slow and then it fails. Is there some problem or maintenance in the servers? PhLDownloadManager>>downloadFailureForUrl: [ :exception | self downloadFailureForUrl: url ] in PhLDownloadManager>>newHTTPClientForUrl: in Block: [ :exception | self downloadFailureForUrl: url ] BlockClosure>>cull: Context>>evaluateSignal: Context>>handleSignal: ConnectionTimedOut(Exception)>>pass [ :exception | retryCount > 0 ifTrue: [ self handleRetry: exception; executeWithRetriesRemaining: retryCount - 1 ] ifFalse: [ exception pass ] ] in ZnClient>>executeWithRetriesRemaining: in Block: [ :exception | ... BlockClosure>>cull: Context>>evaluateSignal: Context>>handleSignal: ConnectionTimedOut(Exception)>>signal ConnectionTimedOut(Exception)>>signal: ConnectionTimedOut class(Exception class)>>signal: [ ConnectionTimedOut signal: 'Data receive timed out.' ] in Socket>>waitForDataFor: in Block: [ ConnectionTimedOut signal: 'Data receive timed o...etc... Socket>>waitForDataFor:ifClosed:ifTimedOut: Socket>>waitForDataFor: ZdcSecureSocketStream(ZdcAbstractSocketStream)>>socketWaitForData ZdcSecureSocketStream>>readEncryptedBytes:startingAt:count: ZdcSecureSocketStream>>connect ZnClient>>setupTLSTo: ZnClient>>newConnectionTo: ZnClient>>getConnectionAndExecute ZnClient>>executeWithRedirectsRemaining: [ self executeWithRedirectsRemaining: self maxNumberOfRedirects ] in ZnClient>>executeWithRetriesRemaining: in Block: [ self executeWithRedirectsRemaining: self maxNumb...etc... BlockClosure>>on:do: ZnClient>>executeWithRetriesRemaining: [ self executeWithRetriesRemaining: self numberOfRetries ] in [ [ self executeWithRetriesRemaining: self numberOfRetries ] on: Error do: self ifFailBlock ] in ZnClient>>executeWithTimeout in Block: [ self executeWithRetriesRemaining: self numberOfR...etc... BlockClosure>>on:do: [ [ self executeWithRetriesRemaining: self numberOfRetries ] on: Error do: self ifFailBlock ] in ZnClient>>executeWithTimeout in Block: [ [ self executeWithRetriesRemaining: self numberO...etc... [ ^ block value ] in ZnClient>>withTimeoutDo: in Block: [ ^ block value ] regards, Vitor

April 11, 2020

Re: [Pharo-users] Status of Marea?

by HernÃ¡n Morales Durand

Hi Mariano! Thank you for the very fast reply! Yes, I have highSierra and Mojave was the last 32-bit supported so I can try the image if you send it to me. I've been wondering if there's huge performance impact if I need to walk every node of a giant tree (like a phylogenetic tree) for some operations in my app. Anyway I would love to check it out :) Cheers, HernÃ¡n El vie., 10 abr. 2020 a las 17:33, Mariano Martinez Peck (< marianopeck(a)gmail.com>) escribiÃ³: > Hi HernÃ¡n, > > If I remember correctly, that was the last repo I used. I just tried to > check in SmalltalkHub if there was a new repo but seems already down, so I > can't check. > Also, none of my Marea images work anymore for me because latest OSX > dropped 32 bits support. But I can look for the images and send it to you > if you want. > > To bring it to latest Pharo I would think: > > 1) Update it to use latest Fuel version > 2) Slots may have broken class proxies > 3) Update Marea proxies to use the latest version of Ghost proxies > (wherever that is) > > As a side note, Marea would work much better these days because of the > lazy become (AFAIK that is already in Cog since some time). > > Let me know if that helps, > > > > On Fri, Apr 10, 2020 at 5:25 PM HernÃ¡n Morales Durand < > hernan.morales(a)gmail.com> wrote: > >> Hi everyone, >> >> Just checking what it would take to update Marea for a production >> environment in Pharo 8 or Pharo 9 or beyond. The last repo link I found is >> this: >> >> http://ss3.gemstone.com/ss/Marea.html >> >> And I couldn't find other codebase in the Mariano's Github repo. >> >> Any updates out there? >> >> Cheers, >> >> HernÃ¡n >> >> > > -- > Mariano Martinez Peck > Email: marianopeck(a)gmail.com > Twitter: @MartinezPeck > LinkedIn: www.linkedin.com/in/mariano-martinez-peck > <https://www.linkedin.com/in/mariano-mart%C3%ADnez-peck/> > Blog: https://marianopeck.wordpress.com/ >

April 10, 2020

Re: [Pharo-users] Status of Marea?

by Mariano Martinez Peck

Hi HernÃ¡n, If I remember correctly, that was the last repo I used. I just tried to check in SmalltalkHub if there was a new repo but seems already down, so I can't check. Also, none of my Marea images work anymore for me because latest OSX dropped 32 bits support. But I can look for the images and send it to you if you want. To bring it to latest Pharo I would think: 1) Update it to use latest Fuel version 2) Slots may have broken class proxies 3) Update Marea proxies to use the latest version of Ghost proxies (wherever that is) As a side note, Marea would work much better these days because of the lazy become (AFAIK that is already in Cog since some time). Let me know if that helps, On Fri, Apr 10, 2020 at 5:25 PM HernÃ¡n Morales Durand < hernan.morales(a)gmail.com> wrote: > Hi everyone, > > Just checking what it would take to update Marea for a production > environment in Pharo 8 or Pharo 9 or beyond. The last repo link I found is > this: > > http://ss3.gemstone.com/ss/Marea.html > > And I couldn't find other codebase in the Mariano's Github repo. > > Any updates out there? > > Cheers, > > HernÃ¡n > > -- Mariano Martinez Peck Email: marianopeck(a)gmail.com Twitter: @MartinezPeck LinkedIn: www.linkedin.com/in/mariano-martinez-peck <https://www.linkedin.com/in/mariano-mart%C3%ADnez-peck/> Blog: https://marianopeck.wordpress.com/

April 10, 2020

Status of Marea?

by HernÃ¡n Morales Durand

Hi everyone, Just checking what it would take to update Marea for a production environment in Pharo 8 or Pharo 9 or beyond. The last repo link I found is this: http://ss3.gemstone.com/ss/Marea.html And I couldn't find other codebase in the Mariano's Github repo. Any updates out there? Cheers, HernÃ¡n

April 10, 2020

Re: [Pharo-users] Pharo on a chromebook?

by tbrunz

I just verified that my 'pharo-adjust-cursor' script does work for Pharo Launcher as well as Pharo images that are installed in a Linux Container on Chromebooks that have 4K displays (e.g., the "Pixelbook" models). If you download the bash script from https://github.com/tbrunz/pharo-support/blob/master/src/pharo-adjust-cursor… to the directory that contains 'pharolauncher' and run it, it will update the 'pharo-launcher' script inside. Thereafter, when you run Pharo Launcher, or launch an image from Pharo Launcher, the cursor on 4K Chromebook displays will look normal size. -t -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

April 10, 2020

Re: [Pharo-users] Thinking aloud about project at hand

by John Aspinall

Hi Tomaz - since a couple of people have mentioned SQLite Iâd like to suggest ReStore as an easy way to use this from Pharo: https://github.com/rko281/ReStoreForPharo <https://github.com/rko281/ReStoreForPharo> ReStore lets you store your data in SQLite without needing to write any SQL, and offers an easy upgrade path to larger databases such as Postgres. Documentation (recently updated) is linked from the end of the Github readme. Good luck with your application. John Aspinall > On 10 Apr 2020, at 09:12, tesonep(a)gmail.com wrote: > > Hi Tomaz, > > From the comments about the requirements you do I suggest: > > - For data storage, my recommendation goes depending on two factors: > 1)Installation complexity, 2) volume of data. These are two variables > that will be against one and the other. I will recommend to use > MongoDB + Voyage, that goes very well. It grows excellent with the > amount of data, it has really cool integration with Pharo and Voyage > is an excellent mapping tool; also it is a mature solution and it has > a lot of support for back-up schemes and solutions. Using MongoDB > complicates the installation process, so if you have the idea of a > easy installable application maybe SQLlite is a good alternative. > > - I think using Spec2 + GTK + Roassal3 + Polymath is a good idea. > Check that Spec2 and Roassal3 are still under heavy development. They > are getting much better, but of course, it will take some time to > stabilize; but both of them are progressing very fast and they are > already quite stable. > > - For developing DSL and interactive programming for non-programmers > users, Pharo is ideal. It presents a lot of tools to easily develop > DSL and the UI to make them work excellent. The idea of live > manipulation of objects and inspection of all the instances can be > easily added to a DSL. > > Thanks for your attention! > > On Thu, Apr 9, 2020 at 9:13 PM TomaÅ¾ Turk <tomaz.turk(a)ef.uni-lj.si> wrote: >> >> Dear all, >> >> I'm thinking about implementing a software solution in Pharo (as one of the candidate environments), it's a project that I'm dealing with professionally. The goal is to develop a financial planning/simulation application on the country level, which is at present developed as a set of interrelated Excel spreadsheets. The requirement is that the solution should be more "manageable", resilient and straightforward than Excel permits, that it should present a workflow to the user - i.e. , that the tasks the user should do are suggested through the GUI. >> >> The majority of the data is in a form of a time series (for instance: GDP for a series of years). There are many variables in the model which shoud be calculated from other variables, year by year. There are also lagged variables (the value for the current year depends from the value of previous year), and running averages. There are also some variables which are not time series (parameters). As a part of GUI, there is a need to present the results as diagrams, too (scatterplots, line charts), otherwise tables are the output. >> >> I found Pharo to be a very elegant language and environment, with version 8.0 it became pretty stable, however I don't have any experiences in building software solutions of this type in Smalltalk. In other words, I'd like to be more confident in setting the architecture, both in the sense of the model content (variables interrelation) and the architecture of classes. Besides, for the calculated variables I'd like to have a relatively simple syntax to define them (like 'GDPpC <- GDP / Population'). >> >> My thoughts and questions: >> - for easier maintenance I'd like to separate the data from the code - so the question is what would be the best way to implement persistence (another Pharo image - with what?, some relational database, XML/JSON, flat files ...) >> - I wonder what would be the best "architecture" of classes - so, we have a lot of aggregate variables like GDP and population, which can be grouped at least according to the stage in the planning workflow. There are also resulting (calculated) variables (e.g. GDP per capita). On the other hand, since this is a planning software, it's a kind of simulation, where we have a "data warehouse", experiments and results >> - As a core packages I would use Spec2, Roassal, and PolyMath. >> >> I'm just thinking aloud, and would greatly appreciate any thoughts from experienced Pharoers :-) >> >> Best wishes, >> Tomaz > > > > -- > Pablo Tesone. > tesonep(a)gmail.com >

April 10, 2020

Internet connection active

by dario.trussardi65

Ciao, i have a Pharo 7.0.3 image run on Ubuntu system. Sometime the internet connection go down. In this status when i do the: NetNameResolver addressForName: 'www.esug.org' timeout: 1 the system is busy for 20 seconds ( for any request ). The timeout: 1 is not considered. Question: how i can test if the internet connection is up before submit any NetNameResolver request ? Googling in VisualBasic i found the ActiveConnection It return true if internet connection is active. Equivalent in Pharo - Gemstone ? Thanks, Dario

April 10, 2020

Re: [Pharo-users] Thinking aloud about project at hand

by Tim Mackinnon

Wasnât there a recent financial app in Pharo that was made open source... there might be many ideas in it, and possibly a starting point. Itâs in the success pages of pharo: Quuve, there are posts from Mariano about what tech they used too Tim > On 10 Apr 2020, at 09:13, "tesonep(a)gmail.com" <tesonep(a)gmail.com> wrote: > > ï»¿Hi Tomaz, > > From the comments about the requirements you do I suggest: > > - For data storage, my recommendation goes depending on two factors: > 1)Installation complexity, 2) volume of data. These are two variables > that will be against one and the other. I will recommend to use > MongoDB + Voyage, that goes very well. It grows excellent with the > amount of data, it has really cool integration with Pharo and Voyage > is an excellent mapping tool; also it is a mature solution and it has > a lot of support for back-up schemes and solutions. Using MongoDB > complicates the installation process, so if you have the idea of a > easy installable application maybe SQLlite is a good alternative. > > - I think using Spec2 + GTK + Roassal3 + Polymath is a good idea. > Check that Spec2 and Roassal3 are still under heavy development. They > are getting much better, but of course, it will take some time to > stabilize; but both of them are progressing very fast and they are > already quite stable. > > - For developing DSL and interactive programming for non-programmers > users, Pharo is ideal. It presents a lot of tools to easily develop > DSL and the UI to make them work excellent. The idea of live > manipulation of objects and inspection of all the instances can be > easily added to a DSL. > > Thanks for your attention! > >> On Thu, Apr 9, 2020 at 9:13 PM TomaÅ¾ Turk <tomaz.turk(a)ef.uni-lj.si> wrote: >> >> Dear all, >> >> I'm thinking about implementing a software solution in Pharo (as one of the candidate environments), it's a project that I'm dealing with professionally. The goal is to develop a financial planning/simulation application on the country level, which is at present developed as a set of interrelated Excel spreadsheets. The requirement is that the solution should be more "manageable", resilient and straightforward than Excel permits, that it should present a workflow to the user - i.e. , that the tasks the user should do are suggested through the GUI. >> >> The majority of the data is in a form of a time series (for instance: GDP for a series of years). There are many variables in the model which shoud be calculated from other variables, year by year. There are also lagged variables (the value for the current year depends from the value of previous year), and running averages. There are also some variables which are not time series (parameters). As a part of GUI, there is a need to present the results as diagrams, too (scatterplots, line charts), otherwise tables are the output. >> >> I found Pharo to be a very elegant language and environment, with version 8.0 it became pretty stable, however I don't have any experiences in building software solutions of this type in Smalltalk. In other words, I'd like to be more confident in setting the architecture, both in the sense of the model content (variables interrelation) and the architecture of classes. Besides, for the calculated variables I'd like to have a relatively simple syntax to define them (like 'GDPpC <- GDP / Population'). >> >> My thoughts and questions: >> - for easier maintenance I'd like to separate the data from the code - so the question is what would be the best way to implement persistence (another Pharo image - with what?, some relational database, XML/JSON, flat files ...) >> - I wonder what would be the best "architecture" of classes - so, we have a lot of aggregate variables like GDP and population, which can be grouped at least according to the stage in the planning workflow. There are also resulting (calculated) variables (e.g. GDP per capita). On the other hand, since this is a planning software, it's a kind of simulation, where we have a "data warehouse", experiments and results >> - As a core packages I would use Spec2, Roassal, and PolyMath. >> >> I'm just thinking aloud, and would greatly appreciate any thoughts from experienced Pharoers :-) >> >> Best wishes, >> Tomaz > > > > -- > Pablo Tesone. > tesonep(a)gmail.com >

April 10, 2020

Re: [Pharo-users] Thinking aloud about project at hand

by tesonep＠gmail.com

Hi Tomaz, >From the comments about the requirements you do I suggest: - For data storage, my recommendation goes depending on two factors: 1)Installation complexity, 2) volume of data. These are two variables that will be against one and the other. I will recommend to use MongoDB + Voyage, that goes very well. It grows excellent with the amount of data, it has really cool integration with Pharo and Voyage is an excellent mapping tool; also it is a mature solution and it has a lot of support for back-up schemes and solutions. Using MongoDB complicates the installation process, so if you have the idea of a easy installable application maybe SQLlite is a good alternative. - I think using Spec2 + GTK + Roassal3 + Polymath is a good idea. Check that Spec2 and Roassal3 are still under heavy development. They are getting much better, but of course, it will take some time to stabilize; but both of them are progressing very fast and they are already quite stable. - For developing DSL and interactive programming for non-programmers users, Pharo is ideal. It presents a lot of tools to easily develop DSL and the UI to make them work excellent. The idea of live manipulation of objects and inspection of all the instances can be easily added to a DSL. Thanks for your attention! On Thu, Apr 9, 2020 at 9:13 PM TomaÅ¾ Turk <tomaz.turk(a)ef.uni-lj.si> wrote: > > Dear all, > > I'm thinking about implementing a software solution in Pharo (as one of the candidate environments), it's a project that I'm dealing with professionally. The goal is to develop a financial planning/simulation application on the country level, which is at present developed as a set of interrelated Excel spreadsheets. The requirement is that the solution should be more "manageable", resilient and straightforward than Excel permits, that it should present a workflow to the user - i.e. , that the tasks the user should do are suggested through the GUI. > > The majority of the data is in a form of a time series (for instance: GDP for a series of years). There are many variables in the model which shoud be calculated from other variables, year by year. There are also lagged variables (the value for the current year depends from the value of previous year), and running averages. There are also some variables which are not time series (parameters). As a part of GUI, there is a need to present the results as diagrams, too (scatterplots, line charts), otherwise tables are the output. > > I found Pharo to be a very elegant language and environment, with version 8.0 it became pretty stable, however I don't have any experiences in building software solutions of this type in Smalltalk. In other words, I'd like to be more confident in setting the architecture, both in the sense of the model content (variables interrelation) and the architecture of classes. Besides, for the calculated variables I'd like to have a relatively simple syntax to define them (like 'GDPpC <- GDP / Population'). > > My thoughts and questions: > - for easier maintenance I'd like to separate the data from the code - so the question is what would be the best way to implement persistence (another Pharo image - with what?, some relational database, XML/JSON, flat files ...) > - I wonder what would be the best "architecture" of classes - so, we have a lot of aggregate variables like GDP and population, which can be grouped at least according to the stage in the planning workflow. There are also resulting (calculated) variables (e.g. GDP per capita). On the other hand, since this is a planning software, it's a kind of simulation, where we have a "data warehouse", experiments and results > - As a core packages I would use Spec2, Roassal, and PolyMath. > > I'm just thinking aloud, and would greatly appreciate any thoughts from experienced Pharoers :-) > > Best wishes, > Tomaz -- Pablo Tesone. tesonep(a)gmail.com

April 10, 2020