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

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

by Esteban Lorenzano

On May 11 2021, at 6:22 pm, mark.odonoghue.2010(a)gmail.com wrote: > Many thanks Esteban - I will study the code to get a feel for what kinds of approach I would need to use. > > It didnât install properly as you warned - but thatâs OK - I only need to peruse the code at this point. > > > First impressions are that it has a bit of complex detail that handles some of the platform & backend GUI work. uh? where? if that is the case it should have gone long time ago... and I was sure I got rid of it. Esteban > I suppose ideally these would be reworked somewhat so the the Chrono application doesnât need to deal with any of that stuff? > > > Nevertheless is is going to be very useful and I thank you for your help :-) > > > Cheers > Mark

May 11, 2021

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

by mark.odonoghue.2010＠gmail.com

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 11, 2021

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

by mark.odonoghue.2010＠gmail.com

Many thanks Esteban - I will study the code to get a feel for what kinds of approach I would need to use. It didnât install properly as you warned - but thatâs OK - I only need to peruse the code at this point. First impressions are that it has a bit of complex detail that handles some of the platform & backend GUI work. I suppose ideally these would be reworked somewhat so the the Chrono application doesnât need to deal with any of that stuff? Nevertheless is is going to be very useful and I thank you for your help :-) Cheers Mark

May 11, 2021

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

by Sebastian Jordan

Hi, You can check this: https://github.com/jordanmontt/RewriteToolsSet Hope it helps you. Regards, Sebastian ________________________________ From: mark.odonoghue.2010(a)gmail.com <mark.odonoghue.2010(a)gmail.com> Sent: 11 May 2021 06:21 To: pharo-users(a)lists.pharo.org <pharo-users(a)lists.pharo.org> Subject: [Pharo-users] Looking for more non-trivial example application based on Spec2 to learn from... Iâm trying to return to Smalltalk after a 15+ year break (VisualAge, ENfin/2 ST-80 etc), and have been trying to get back into the saddle with Pharo 8 and Pharo 9. Since I have no legacy code - Iâve opted for Pharo 9 knowing a stable release isnât far away. My goal is to produce several applications for private use, and regain some competence in Smalltalk along the way. The apps are business accounting/investing style apps - not too technical. Iâm really not keen on the prospect of using any of the other âmainstreamâ alternatives we have today. Iâm confident I can build a domain model easily enough, but the Pharo environment is my stumbling point - especially building the GUI with Spec2. Iâm really spinning my wheels trying to get a useful Spec2 application built. It needs to have menus, a toolbar, tabbed notebooks, tree lists etc - plus a dozen or so tabular panes (to view/maintain my domain model). Ideally it would also be able to use ODBC or UDBC or Excel etc for transaction storage. Iâve been through all the building blocks in SpDemo but there a just too many concepts to familiarise with and test bit by bit as I buildup a more realistic functioning application. It has been very frustraing and time consuming. I understand why there are not yet solid guides available (book, tutorial, examples) , so I thought the best way would be to use an existing Spec2 application to help me get it going. I think this would save me many weeks of effort. Could anyone point me to at a working non-trivial application that I could share and use a starting point. Any suggestions to help me get into the heart of my application would be most welcomeâ¦!

May 11, 2021

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

by Esteban Lorenzano

Ah, a disclaimer: so far, just me and a little bit Santiago tested this installation... for sure you will find problems. Feel free to ask :) Esteban On May 11 2021, at 12:57 pm, Esteban Lorenzano <estebanlm(a)netc.eu> wrote: > Hi, > > Check at this : > https://github.com/estebanlm/crono > Is a fairly advanced application so you will probably have some issues to get into (also because I didn't have time to properly document it yet). > > Esteban > > > On May 11 2021, at 12:21 pm, mark.odonoghue.2010(a)gmail.com wrote: > > Iâm trying to return to Smalltalk after a 15+ year break (VisualAge, ENfin/2 ST-80 etc), and have been trying to get back into the saddle with Pharo 8 and Pharo 9. > > > > Since I have no legacy code - Iâve opted for Pharo 9 knowing a stable release isnât far away. > > My goal is to produce several applications for private use, and regain some competence in Smalltalk along the way. The apps are business accounting/investing style apps - not too technical. Iâm really not keen on the prospect of using any of the other âmainstreamâ alternatives we have today. > > Iâm confident I can build a domain model easily enough, but the Pharo environment is my stumbling point - especially building the GUI with Spec2. Iâm really spinning my wheels trying to get a useful Spec2 application built. > > It needs to have menus, a toolbar, tabbed notebooks, tree lists etc - plus a dozen or so tabular panes (to view/maintain my domain model). Ideally it would also be able to use ODBC or UDBC or Excel etc for transaction storage. > > Iâve been through all the building blocks in SpDemo but there a just too many concepts to familiarise with and test bit by bit as I buildup a more realistic functioning application. It has been very frustraing and time consuming. > > I understand why there are not yet solid guides available (book, tutorial, examples) , so I thought the best way would be to use an existing Spec2 application to help me get it going. I think this would save me many weeks of effort. > > Could anyone point me to at a working non-trivial application that I could share and use a starting point. > > Any suggestions to help me get into the heart of my application would be most welcomeâ¦!

May 11, 2021

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

by Esteban Lorenzano

Hi, Check at this : https://github.com/estebanlm/crono Is a fairly advanced application so you will probably have some issues to get into (also because I didn't have time to properly document it yet). Esteban On May 11 2021, at 12:21 pm, mark.odonoghue.2010(a)gmail.com wrote: > Iâm trying to return to Smalltalk after a 15+ year break (VisualAge, ENfin/2 ST-80 etc), and have been trying to get back into the saddle with Pharo 8 and Pharo 9. > > Since I have no legacy code - Iâve opted for Pharo 9 knowing a stable release isnât far away. > My goal is to produce several applications for private use, and regain some competence in Smalltalk along the way. The apps are business accounting/investing style apps - not too technical. Iâm really not keen on the prospect of using any of the other âmainstreamâ alternatives we have today. > Iâm confident I can build a domain model easily enough, but the Pharo environment is my stumbling point - especially building the GUI with Spec2. Iâm really spinning my wheels trying to get a useful Spec2 application built. > It needs to have menus, a toolbar, tabbed notebooks, tree lists etc - plus a dozen or so tabular panes (to view/maintain my domain model). Ideally it would also be able to use ODBC or UDBC or Excel etc for transaction storage. > Iâve been through all the building blocks in SpDemo but there a just too many concepts to familiarise with and test bit by bit as I buildup a more realistic functioning application. It has been very frustraing and time consuming. > I understand why there are not yet solid guides available (book, tutorial, examples) , so I thought the best way would be to use an existing Spec2 application to help me get it going. I think this would save me many weeks of effort. > Could anyone point me to at a working non-trivial application that I could share and use a starting point. > Any suggestions to help me get into the heart of my application would be most welcomeâ¦!

May 11, 2021

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

by mark.odonoghue.2010＠gmail.com

Iâm trying to return to Smalltalk after a 15+ year break (VisualAge, ENfin/2 ST-80 etc), and have been trying to get back into the saddle with Pharo 8 and Pharo 9. Since I have no legacy code - Iâve opted for Pharo 9 knowing a stable release isnât far away. My goal is to produce several applications for private use, and regain some competence in Smalltalk along the way. The apps are business accounting/investing style apps - not too technical. Iâm really not keen on the prospect of using any of the other âmainstreamâ alternatives we have today. Iâm confident I can build a domain model easily enough, but the Pharo environment is my stumbling point - especially building the GUI with Spec2. Iâm really spinning my wheels trying to get a useful Spec2 application built. It needs to have menus, a toolbar, tabbed notebooks, tree lists etc - plus a dozen or so tabular panes (to view/maintain my domain model). Ideally it would also be able to use ODBC or UDBC or Excel etc for transaction storage. Iâve been through all the building blocks in SpDemo but there a just too many concepts to familiarise with and test bit by bit as I buildup a more realistic functioning application. It has been very frustraing and time consuming. I understand why there are not yet solid guides available (book, tutorial, examples) , so I thought the best way would be to use an existing Spec2 application to help me get it going. I think this would save me many weeks of effort. Could anyone point me to at a working non-trivial application that I could share and use a starting point. Any suggestions to help me get into the heart of my application would be most welcomeâ¦!

May 11, 2021

Re: uFFI ffiCall return value

by TomaÅ¾ Turk

Thanks! Tomaz

May 10, 2021

Re: uFFI ffiCall return value

by Esteban Lorenzano

Hi, In practice it is the equivalent, since the ffiCall has a return type and it takes precedence over the ^ of Pharo. Personally, I often add the ^ to ffiCalls that have a return to easy the reading, but the output will be the same. Esteban On May 10 2021, at 2:12 pm, TomaÅ¾ Turk <tomaz.turk(a)ef.uni-lj.si> wrote: > Dear all, > > Should the method that calls Object>>#ffiCall: and variants always return the result of this call? For instance, in uFFI book, there is a method abs: defined as > > FFITutorial class >> abs: n [ > ^ self ffiCall: #( int abs (int n) ) > ] > > > on page 16, however > > FFITutorial >> abs: n [ > self ffiCall: #( int abs (int n) ) > ] > > > on page 52 doesn't have an explicit return ^. The book, however, in most of the examples uses the explicit return. What is the recommended approach? > > Thanks, > Tomaz

May 10, 2021

uFFI ffiCall return value

by TomaÅ¾ Turk

Dear all, Should the method that calls Object>>#ffiCall: and variants always return the result of this call? For instance, in uFFI book, there is a method abs: defined as FFITutorial class >> abs: n [ ^ self ffiCall: #( int abs (int n) ) ] on page 16, however FFITutorial >> abs: n [ self ffiCall: #( int abs (int n) ) ] on page 52 doesn't have an explicit return ^. The book, however, in most of the examples uses the explicit return. What is the recommended approach? Thanks, Tomaz

May 10, 2021