July 2015 - Pharo-users - lists.pharo.org

Clearing objects from .changes

by Peter UhnÃ¡k

Is it possible to remove all references to a class after it has been removed everywhere? For example I can delete all classes of package 'Roassal2-Builder-Grapher' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ pkg := RPackageOrganizer default packageNamed: 'Roassal2'. grapherTag := pkg classTags detect: [ :each | each name = #'Builder-Grapher' ]. grapherTag classes do: [ :each | removeClass value: each ]. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ However this leaves the .changes file intact, even after I do "Smalltalk cleanUp: true". The reason why I am doing this is to lower the size of .changes/.images files which are massive just after loading my project... so it takes a lot of space for testing... Thanks, Peter

July 6, 2015

Re: [Pharo-users] I probably messed up with .changes...

by Nicolai Hess

2015-07-06 9:55 GMT+02:00 Matthieu Lacaton <matthieu.lacaton(a)gmail.com>: > Hello, > > I would just like to report something that happened to me today. > > As I was working on a project, I tried inserting an instance variable to > one of my classes. > Starting from this moment something became very weird. First, some > subclasses were not listed as subclasses anymore, then I realised during > the execution that allocating my new instance variable was actually > modifying another instance variable. > > I tried digging up a bit and I found out that many of my methods were a > complete mess. > When browsing with Nautilus the title of the method was for example: > "addProperty:key:". However the corpse of the method was totally random > with something like that for example: > "ient; > width: 1. > graphic strokeStyle: _strokeStyle" > > So, reportedly, the name of the method was "ient;" ... > > Basically I had many methods where the source code was just random chunks > of other methods. > > The funnier thing is that everything worked perfectly fine during > execution. > > I tried to look at different backup images I had to see when everything > began to go wrong and I realised I had been working with broken source code > for about a week. > What image version did you use? > > So if I understand correctly, I probably messed up with the .changes file > (I don't remembr how but maybe I copied the .image without the .changes or > renamed the .image or i don't know). > And now the compiled code is okay but the source code is lost so > everything is working fine until the system tries to recompile everything ? > > Now my question is : is there a way to fix the issue ? I tried exporting > the package to a .mcz but I had bugs everywhere. I imported the old working > package to an .mcz and tried browsing the differences with the broken one > just to manually get back eveything I changed during this week. But I > couldn't cause there were bugs everytime I tried to browse the changes. > Basically, are all my changes definitely lost or is there a way to get it > back somehow (at least the raw source code) ? > Maybe you can iterator over all methods decompile, and save as new code? Maybe you can open the image without the changes file and try to create a package or file out the package? > > I know that I fucked up and this is my fault but it would have been nice > if something (anything) told me earlier that I did something wrong. I've > been adding / modifying lots of methods and even executing the program for > a week now and absolutely nothing told me that something was wrong until I > tried adding an instance variable. > No, not your fault, this should not happen. The changes file is for "recover if you messed up the image". If the changes file gets corrupted, then this is a serious bug. > > I am in a situation where I actually wrote and "saved" code and now it > seems lost... that's frustrating :( > > Thanks, > > Matthieu >

July 6, 2015

I probably messed up with .changes...

by Matthieu Lacaton

Hello, I would just like to report something that happened to me today. As I was working on a project, I tried inserting an instance variable to one of my classes. Starting from this moment something became very weird. First, some subclasses were not listed as subclasses anymore, then I realised during the execution that allocating my new instance variable was actually modifying another instance variable. I tried digging up a bit and I found out that many of my methods were a complete mess. When browsing with Nautilus the title of the method was for example: "addProperty:key:". However the corpse of the method was totally random with something like that for example: "ient; width: 1. graphic strokeStyle: _strokeStyle" So, reportedly, the name of the method was "ient;" ... Basically I had many methods where the source code was just random chunks of other methods. The funnier thing is that everything worked perfectly fine during execution. I tried to look at different backup images I had to see when everything began to go wrong and I realised I had been working with broken source code for about a week. So if I understand correctly, I probably messed up with the .changes file (I don't remembr how but maybe I copied the .image without the .changes or renamed the .image or i don't know). And now the compiled code is okay but the source code is lost so everything is working fine until the system tries to recompile everything ? Now my question is : is there a way to fix the issue ? I tried exporting the package to a .mcz but I had bugs everywhere. I imported the old working package to an .mcz and tried browsing the differences with the broken one just to manually get back eveything I changed during this week. But I couldn't cause there were bugs everytime I tried to browse the changes. Basically, are all my changes definitely lost or is there a way to get it back somehow (at least the raw source code) ? I know that I fucked up and this is my fault but it would have been nice if something (anything) told me earlier that I did something wrong. I've been adding / modifying lots of methods and even executing the program for a week now and absolutely nothing told me that something was wrong until I tried adding an instance variable. I am in a situation where I actually wrote and "saved" code and now it seems lost... that's frustrating :( Thanks, Matthieu

July 6, 2015

Re: [Pharo-users] Athens and radial gradient

by Nicolai Hess

2015-06-18 14:49 GMT+02:00 Matthieu Lacaton <matthieu.lacaton(a)gmail.com>: > Hello, > > I wanted to use Athens API to define a radial gradient and I saw that the > class RadialGradientPaint only had one radius as instance variable and it > seemed to me it was passed as the end radius while the start radius was set > to 0. > Does it mean that if I want to define a start radius different from 0 I > need to call the backend directly ? > Well, that is the Athens API, it may happen of course, that a one backend (for example - AthensCairo) could supports more arguments. Maybe the API was choosen that way, because this is the API that can be implemented by Balloon and Cairo. (of course, this isn't really important because all users of this library explicit work with the AthensCairoSurface the backend, and to me, it looks no one cares). > > Thanks, > > Matthieu >

July 5, 2015

Re: [Pharo-users] Kivy

by Alain Plantec

> I'm not sure that we need a DSL. Iâm not sure that we donât need a DSL :) Spec is a kind of dsl and the idea is cool. >> This is a point that particularly interests me, especially regarding >> declarative syntax. >> Yes, but unfortunately not in 3 month (for my part)... > > Not for Brick too :) give one full year to Aliaksel together with Glenn :) > >> >> Regards, >> Glenn. >> >> >> >> >> ----- >> Glenn CavarlÃ© >> -- >> View this message in context: http://forum.world.st/Kivy-tp4835739p4835775.html >> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >> >> > >

July 5, 2015

Re: [Pharo-users] Situation - Raspberry PI and Pharo + Squeak

by Attila Magyar

Hi Marten, Currently I'm using this this vm from here http://www.mirandabanda.org/files/Cog/VM/VM.r3395/cogspurlinuxhtARM-15.26.3… with the latest Pharo 5 spur image from here http://files.pharo.org/image/50/latest-spur32.zip As far as I know, spur is a new memory manager but I'm not familiar with the details. There is also a stack vm that works with ordinary images, but it lacks JIT compilation therefore a lot slower than cog. Attila -- View this message in context: http://forum.world.st/Situation-Raspberry-PI-and-Pharo-Squeak-tp4835873p483… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

July 5, 2015

Situation - Raspberry PI and Pharo + Squeak

by itlists＠schrievkrom.de

Hello, can anyone summarize the situation of Squeak/Pharo under Raspberry PI at the moment ? What platform/version is working, which vm should be used and it should be useable ... what is the difference of SPUR here etc .... Thanks, -- Marten Feldtmann

July 5, 2015

Re: [Pharo-users] Kivy

by stepharo

>>>> For the information we are working on touch and OSWindow improvements. >>>> Alain is imporving Bloc the future graphic layer of Pharo, people from >>>> bern are working on new widgets. >>>> We are working on cleaning widgets. Now we also accept help. >>>> >>>> Stef >>> Sure I know. The constituting parts does not make the whole however. I >>> mean a larger plan could help structuring the parts and give a focus. >> Hilaire >> we have a plan >> a new graphics core >> with new widgets >> and event touch support and several windows. >> >> So I do not see why you say that we are not focused. >> Now you do not create a graphics core in 2 days. And if more people >> would help >> then we would go faster :) >> Alex is experimenting to port Roassal on Bloc and he is finding bugs >> that Alain is fixing. >> >> When I proposed topics to students this is also with this vision in mind. >> >> Stef >> >> > I didn't write Pharo is unfocused, I just think broader project like > kivy can give structuring focus. Yes Now our project is: We also want Pharo to be a modern prototyping UI platform and this is why we did athens, cairo, now gesture, bloc, Morphic cleaning, brick,.... > When reading Pharo vision document, I see great parts/foci, but I am not > sure about the whole vision. > I agree it is easy to raise external opinion than working on that > internally, but however it does not dismiss the opinion. > > > Hilaire >

July 5, 2015

Re: [Pharo-users] Finding error in STON string

by Sven Van Caekenberghe

> On 05 Jul 2015, at 14:19, Peter UhnÃ¡k <i.uhnak(a)gmail.com> wrote: > > Would be possible for STON to report context for error? > For example > > STON fromString: '[ > "first", > "second", > ]' > > reports "At character 23: invalid input" which is not very useful especially in longer strings. > (at: 23 is actually Character cr) > > Maybe better would be something like > > 'At character 23: invalid input near "second", ]' so I already see the surrounding text (this is not perfect, but I find it very common for example to forget comma when moving things around in array. Yes, the error handling is not very human oriented. You could show the context yourself, showing input 10 positions before and after the indicated position where the parsing failed. > Or even better, allow comma after the last item. > (Arguably even JSON (unlike JavaScript) doesn't allow this so maybe it would break stuff.) Like you said yourself, not a good idea. > Peter

July 5, 2015

Re: [Pharo-users] STON wtf parsing

by Sven Van Caekenberghe

The user/caller decides what it expects from the input and how to deal with exceptions. For example, here is how to read multiple expression until EOF Array streamContents: [ :out | [ reader atEnd ] whileFalse: [ out nextPut: reader next ] ] I think the current design is the both simple and flexible. > On 05 Jul 2015, at 15:47, Peter UhnÃ¡k <i.uhnak(a)gmail.com> wrote: > > Ok but how does the parser knows whether the input is multiexpression or an error? > I mean it stops parsing in the middle of the string which seems really weird to me. > > Peter > > On Sun, Jul 5, 2015 at 3:28 PM, Sven Van Caekenberghe <sven(a)stfx.eu> wrote: > Hi Peter, > > > On 05 Jul 2015, at 14:36, Peter UhnÃ¡k <i.uhnak(a)gmail.com> wrote: > > > > How come this passes? > > > > STON fromString: '{ > > "a": "b" > > }wtf", > > "x": "y" > > '. > > > > The result is dictionary "a" -> "b". > > > > I would expect for it to die on parse error. > > > > Peter > > The reason this does not fail is because (1) STON is a stream parser that accepts possibly multiple top-level expression from one stream (2) your input is basically valid and complete until the closing curly brace. > > You could enforce the fact that the whole input should be consumed yourself. > > | input reader result | > input := '{ > "a": "b" > }wtf", > "x": "y" > ' readStream. > reader := STON reader on: input. > result := reader next. > reader consumeWhitespace. > self assert: reader atEnd. > result > > Sven > > >

July 5, 2015