- Pharo-users - lists.pharo.org

ODBC question - could not coerce arguments
by Robert Kuszinger April 10, 2016

April 10, 2016

Hello Everyone! I'm facing a problem with ODBC which may be related with character encoding. >From the debugger, it is: *'Could not coerce arguments'* , error message is caught here: externalCallFailed "Raise an error after a failed call to an external function" | errCode | errCode := ExternalFunction getLastError. "this allows us to look at the actual error code" ^self error: (ExternalFunction errorMessageFor: errCode). The SQL command is (runs well in SQL Server manager): update gcp_users SET user_name='VERGA VeszprÃ©mi ErdÅgazdasÃ¡g Zrt.', user_name2='', user_city='8200 VeszprÃ©m', user_custom_1='88-591-545*', user_profession='Jutasi u. 10.' WHERE user_email='molnar(a)drfrohlich.hu' AND user_custom_2='0524' The sql statement above is copied from the debugger as well, caught here: sqlExecDirect: queryString connection checkSQLReturn: (ODBCLibrary default sqlExecDirect: handle statement: queryString length: queryString size ) statement: handle. being as the querystring, class *WideString* (!?). I'm trying also to convert it to CP1250 (which has all the characters I need, actually data comes from a CP1250 txt file and converts well into pharo system) but it also results in a WideString object.. Example: (CP1250TextConverter new convertFromSystemString: 'Å±Ã¡ÅÃ') --> shows WideString in debugger. I think CP1250 should result in a ByteString... Is this the problem (could not coerce arguments). thanks Robert

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How to determine if a file is hidden
by Robert J Rothwell April 9, 2016

April 9, 2016

Hello, Is there a way to determine if a file is hidden? I couldn't find that in "Deep into Pharo". For example, I can get my desktop files with: desktopFiles := FileLocator desktop children. And now I would like to filter that collection to the non-hiddent files with something like: desktopFiles select: [:each | each isHidden not ] But there doesn't seem to be anything like "isHidden" for a FileLocator object. Thank you, Rob Rothwell

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Nesting Builders in Roassal
by Evan Donahue April 9, 2016

April 9, 2016

Hello, I am working with Roassal and trying to write a cell-layout builder that uses RTPieBuilders internally as its nested objects. The nesting docs cover nesting RT elements, but not builders. The composition docs cover composing builders, but not nesting them. I have a partial solution, but it is getting increasingly hacky, to the point where it may be easier to just duplicate the piebuilder code in my builder. Before I go down that road, I wanted to check if there was a more natural way to nest builders. Below is a mashup of the Roassal Examples Nesting and Pie Chart builders that gives the basic flavor of what I am trying to accomplish. Notice that I am creating new PieBuilders every time, running them, and extracting their createdElements for my layout. This works well enough, but if I then want to normalize global properties so that all pie slices with the same property get the same color, I have no way to coordinate the newly generated PieBuilders, as each possesses its own normalizer. Likewise, if I have a global PieBuilder, its internal state gets trampled with each iteration. I figured there was likely an easy way to compose builders that I didn't know about, so I thought I would ask. | v es b | v := RTView new. es := RTEllipse elementsOn: RTShape withAllSubclasses. v addAll: es. RTNest new for: es add: [ :group :model | b := RTPieBuilder new. b objects: RTShape withAllSubclasses. b slice: #numberOfMethods. b normalizer distinctColor. b view: v. b build. group addAll: b createdElements. ]. RTCellLayout new lineItemsCount: 8; on: es. v Thanks, Evan

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FFI return by reference
by Thibault Raffaillac April 8, 2016

April 8, 2016

Hi again, Does anyone know what is the state of return by reference in FFI? Example: glGetAttribute: attr into: value <primitive: #primitiveNativeCall module: #NativeBoostPlugin error: errorCode> ^ self nbCall: #( int SDL_GL_GetAttribute(SDL_GLattr attr, int *value) ) On my image (50666) it does nothing on value yet (if nil, remains nil, if SmallInteger 0, remains 0). (SDL2 glGetAttribute: 6 into: value) should return 16. I've seen NBOpenGL put "out" before value in method header, should it matter? (does not make it work though) Last but not least, should we attach '*' to the type or variable for FFI to understand it is a pointer? Cheers, Thibault Raffaillac

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Passing nil with FFI
by Thibault Raffaillac April 8, 2016

April 8, 2016

Hi, I am having trouble passing nil to a function with FFI (i.e. NULL, i.e. 0). For example: SDL2 glCreateContext: nil. The function expects a subclass of FFIExternalObject, so calls instVarAt: 1 but nil has no such field! Am I missing something? (like a special nil instance of FFIExternalObject) Note however that putting nil works when FFI expects a String. Cheers, Thibault Raffaillac

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Re: [Pharo-users] FFI return by reference
by Thibault Raffaillac April 8, 2016

April 8, 2016

Is there something like a generic int value holder then? > > I think in that case you need to pass an instance of FFIExternalValueHolder. > > > Hi again, > > > > Does anyone know what is the state of return by reference in FFI? > > Example: > > glGetAttribute: attr into: value > > <primitive: #primitiveNativeCall module: #NativeBoostPlugin error: > > errorCode> > > ^ self nbCall: #( int SDL_GL_GetAttribute(SDL_GLattr attr, int > > *value) ) > > > > On my image (50666) it does nothing on value yet (if nil, remains nil, if > > SmallInteger 0, remains 0). > > (SDL2 glGetAttribute: 6 into: value) should return 16. > > I've seen NBOpenGL put "out" before value in method header, should it > > matter? (does not make it work though) > > Last but not least, should we attach '*' to the type or variable for FFI > > to understand it is a pointer? > > > > Cheers, > > Thibault Raffaillac

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Debugger in 4.0
by Hilaire April 8, 2016

April 8, 2016

Hello, >From the debugger, in the bottom panes, when debugging in a bloc of code, it seems impossible to access *at the same time* the instance variables and the method variables. Am I missing something? Hilaire -- Dr. Geo http://drgeo.eu

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Re: [Pharo-users] Pharo-users Digest, Vol 36, Issue 12
by mathias arnaud nkeumo tsombeng April 7, 2016

April 7, 2016

Hi Torsten, Thanks fro you reply. I have try to deploy some test app and it work. Best Regards 2016-04-06 18:00 GMT+02:00 <pharo-users-request(a)lists.pharo.org>: > Send Pharo-users mailing list submissions to > pharo-users(a)lists.pharo.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.pharo.org/mailman/listinfo/pharo-users_lists.pharo.org > or, via email, send a message with subject or body 'help' to > pharo-users-request(a)lists.pharo.org > > You can reach the person managing the list at > pharo-users-owner(a)lists.pharo.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Pharo-users digest..." > > > Today's Topics: > > 1. Re: flags in pharo (Damien Cassou) > 2. Building an application with pharo (Torsten Bergmann) > 3. Re: flags in pharo (phil(a)highoctane.be) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 06 Apr 2016 16:08:14 +0200 > From: Damien Cassou <damien.cassou(a)inria.fr> > To: Thibault ARLOING <thibault.arloing(a)hotmail.fr>, Any question about > pharo is welcome <pharo-users(a)lists.pharo.org> > Subject: Re: [Pharo-users] flags in pharo > Message-ID: <87twjex229.fsf(a)inria.fr> > Content-Type: text/plain > > Thibault ARLOING <thibault.arloing(a)hotmail.fr> writes: > >> I finally found want i search, so the flags were not useful ! >> >> i just wanted to know, in a method, if i already pass through the previous method. >> >> I just have to transport an additional information. > > I was starting to be afraid when Phil proposed MethodWrappers :-). I > think you can do much more simple than that. > > -- > Damien Cassou > http://damiencassou.seasidehosting.st > > "Success is the ability to go from one failure to another without > losing enthusiasm." --Winston Churchill > > > > ------------------------------ > > Message: 2 > Date: Wed, 6 Apr 2016 16:12:45 +0200 > From: "Torsten Bergmann" <astares(a)gmx.de> > To: "Any question about pharo is welcome" > <pharo-users(a)lists.pharo.org> > Subject: [Pharo-users] Building an application with pharo > Message-ID: > <trinity-ed37acac-e6e2-49d2-9944-56376a02a15f-1459951965581@3capp-gmx-bs26> > > Content-Type: text/plain; charset=UTF-8 > > Arnaud wrote: >>How can an application develop in pharo be deployed(web application >>and stand alone application)? > > Highly depends on what kind of application you develop (installable rich client or web application > for deployment on a user machine or a hosted system using a cloud provider) > > Some pointers when you deploy for a machine installation: > > http://zn.stfx.eu/zn/build-and-deploy-1st-webapp/ > https://pharo.fogbugz.com/?W78 > http://pillarhub.pharocloud.com/hub/demarey/ez5m8nnaojww0rrnvnih9l4uy > http://lists.gforge.inria.fr/pipermail/pharo-project/2010-February/021450.h… > > or hosted somewhere like on Pharocloud > > https://www.pharocloud.com/kb > >>How can i capture frame and packet in a network using pharo? > > you need something that intercepts network communication. https://www.wireshark.org > comes to mind. > > You could possibly bind directly to libpcap (a portable C/C++ library for network traffic capture > that is used by Wireshark) using Pharos Universal FFI. There is also WinPcap for Windows. > > Bye > T. > > > > > ------------------------------ > > Message: 3 > Date: Wed, 6 Apr 2016 17:40:23 +0200 > From: "phil(a)highoctane.be" <phil(a)highoctane.be> > To: Any question about pharo is welcome <pharo-users(a)lists.pharo.org> > Subject: Re: [Pharo-users] flags in pharo > Message-ID: > <CAMynPtzQ6sKqV=ob_JbDEcT=hU=giUCSwXvCR8AzjtcgFrT-3w(a)mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > Bah, we have MetaLinks now, what's so scary about MethodWrappers? > > On Wed, Apr 6, 2016 at 4:08 PM, Damien Cassou <damien.cassou(a)inria.fr> > wrote: > >> Thibault ARLOING <thibault.arloing(a)hotmail.fr> writes: >> >> > I finally found want i search, so the flags were not useful ! >> > >> > i just wanted to know, in a method, if i already pass through the >> previous method. >> > >> > I just have to transport an additional information. >> >> I was starting to be afraid when Phil proposed MethodWrappers :-). I >> think you can do much more simple than that. >> >> -- >> Damien Cassou >> http://damiencassou.seasidehosting.st >> >> "Success is the ability to go from one failure to another without >> losing enthusiasm." --Winston Churchill >> >> >> >

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Installation on Ubuntu 15.10 (64 bits)
by Marion Noirbent April 7, 2016

April 7, 2016

Hi, I have installed Pharo on Ubuntu 15.10 (64 bits) with help of another user who ask me to report the troubles we have encountered. By following the instruction on the page http://pharo.org/gnu-linux-installation (and make "sudo apt-get install pharo-vm-core" then "sudo apt-get install pharo-launcher"), the file vm-display-X11 was missing. Then we have try "sudo apt-get install pharo-desktop pharo-launcher", we got the VM but without "PharoV40.sources", it was from 1 to 3 only. So we have donwload it from sources and fix it manually " wget -O- get.pharo.org/50+vm | bash sudo cp ~/pharo/pharo-vm/PharoV40.sources ../../share/pharo-vm/ sudo ln -s ../../share/pharo-vm/PharoV40.sources " Cordially, Marion Noirbent

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[ANN] Pomodoro 1.6 for Pharo 5 + video
by Torsten Bergmann April 7, 2016

April 7, 2016

I did a new pass on the Pomodoro timer for Pharo 5: - settings with custom start value and custom colors - better resizing behavior of the morph - pause/continue - start/restart possibility - default colors aligned with Pharo scheme - pause state in Pomodoro instead of Morph - separate core and tests in own packages all included in a new release 1.6. Just use Spotter/Catalog to load. Enjoy the new video: http://youtu.be/voSUzOu5feU Bye T.

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