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pharo-users@lists.pharo.org

June 2014

64 participants
322 messages

Re: [Pharo-users] Another Pharo based solution released

by stepharo

super could you tell us the name of your company? We would like to have a success story on it, is it possible. Stef On 9/6/14 20:22, Esteban A. Maringolo wrote: > Last Friday my company released a new software solution that involves > Pharo in the server side. > > It consists of a Android based app running on tablets, used for the > showcase and sales of products during expos (of retail companies), > backed by a Pharo server through a REST API, and with a Seaside based > admin/users web. > > The first expo was during the last weekend (fri-sun), and it involved > the sales of a large number of orders and products (I can't disclose > the numbers). > The scale of the solution/user base is small, far from being "cloud > scale", but it is for one of the largest consumer goods manufacturer > (and the one who sold the most during the expo). > Anyhow, the server handled all the request perfectly, without a single glitch. > > We already have some future expos scheduled. So it will continue to > run along the already running Pharo based solution in the same > company. > > Best regards! > > Esteban A. Maringolo > >

June 15, 2014

Re: [Pharo-users] A question about sets

by Alain Busser

Hi Fabien and welcome, you just discovered this phenomenon: http://en.wikipedia.org/wiki/Birthday_problem and you can be proud having discovered it by yourself! Alain On Sun, Jun 15, 2014 at 12:12 AM, Hilaire Fernandes < hilaire.fernandes(a)gmail.com> wrote: > Hi Fabien, > > As other already explained, you just discovered the marvelous Set > collection. > > Hilaire > > Le 14/06/2014 11:48, Fabian Boucsein a Ã©crit : > > i am new to Smalltalk and Pharo and today, while > > trying out some examples, i observed an somewhat > > strange behaviour. > > -- > Dr. Geo http://drgeo.eu > iStoa - https://launchpad.net/istoa > > >

June 15, 2014

Re: [Pharo-users] A question about sets

by Hilaire Fernandes

Hi Fabien, As other already explained, you just discovered the marvelous Set collection. Hilaire Le 14/06/2014 11:48, Fabian Boucsein a Ã©crit : > i am new to Smalltalk and Pharo and today, while > trying out some examples, i observed an somewhat > strange behaviour. -- Dr. Geo http://drgeo.eu iStoa - https://launchpad.net/istoa

June 14, 2014

Re: [Pharo-users] A question about sets

by Ben Coman

June 14, 2014

Re: [Pharo-users] A question about sets

by Tim Hendriks

In sets there can be only Unique nummers. So random produced a few of the same numbers. They get excluded from the set. Tim > Op 14 jun. 2014 om 11:48 heeft Fabian Boucsein <fabian.boucsein(a)googlemail.com> het volgende geschreven: > > Hi there, > > i am new to Smalltalk and Pharo and today, while > trying out some examples, i observed an somewhat > strange behaviour. > > I used this snippet from the pharo.org website: > > | numbers | > numbers := Set new. > 10 timesRepeat: [ numbers add: 100 atRandom ]. > numbers explore. > > Using Pharo 3.0 on my Laptop with Manjaro Linux 32bit and copy > pasting the snippet above into the workspace i get sometimes > a set with 10 values, sometimes with 9 values and once a set > with just 8 values. > > Using this snippet, just to test the timesRepeat message: > 10 timesRepeat: [ Transcript show: (100 atRandom); cr. ]. > i always get 10 values. > > Is the behaviour with the first snippet correct? Giving sometimes > 10 or 9 or even 8 values. Or is it a bug? I would expect to always > get 10 values in my set. > > By the way i am totally excited about your cool programming > environment. Keep on the good work. I justed started to explore > it and can say it is awesome to work with. > > Kind regards, > Fabian >

June 14, 2014

Re: [Pharo-users] A question about sets

by Luc Fabresse

Hi Fabian, Welcome on board ;-) Set: I represent a set of objects without duplicates. so if you have the same number multiple times, it cannot be added more than once in the Set. replace Set by Bag (I represent an unordered collection of possibly duplicate elements.) and the size will always be 10. Best, Luc #Luc 2014-06-14 11:48 GMT+02:00 Fabian Boucsein <fabian.boucsein(a)googlemail.com>: > Hi there, > > i am new to Smalltalk and Pharo and today, while > trying out some examples, i observed an somewhat > strange behaviour. > > I used this snippet from the pharo.org website: > > | numbers | > numbers := Set new. > 10 timesRepeat: [ numbers add: 100 atRandom ]. > numbers explore. > > Using Pharo 3.0 on my Laptop with Manjaro Linux 32bit and copy > pasting the snippet above into the workspace i get sometimes > a set with 10 values, sometimes with 9 values and once a set > with just 8 values. > > Using this snippet, just to test the timesRepeat message: > 10 timesRepeat: [ Transcript show: (100 atRandom); cr. ]. > i always get 10 values. > > Is the behaviour with the first snippet correct? Giving sometimes > 10 or 9 or even 8 values. Or is it a bug? I would expect to always > get 10 values in my set. > > By the way i am totally excited about your cool programming > environment. Keep on the good work. I justed started to explore > it and can say it is awesome to work with. > > Kind regards, > Fabian > >

June 14, 2014

A question about sets

by Fabian Boucsein

Hi there, i am new to Smalltalk and Pharo and today, while trying out some examples, i observed an somewhat strange behaviour. I used this snippet from the pharo.org website: | numbers | numbers := Set new. 10 timesRepeat: [ numbers add: 100 atRandom ]. numbers explore. Using Pharo 3.0 on my Laptop with Manjaro Linux 32bit and copy pasting the snippet above into the workspace i get sometimes a set with 10 values, sometimes with 9 values and once a set with just 8 values. Using this snippet, just to test the timesRepeat message: 10 timesRepeat: [ Transcript show: (100 atRandom); cr. ]. i always get 10 values. Is the behaviour with the first snippet correct? Giving sometimes 10 or 9 or even 8 values. Or is it a bug? I would expect to always get 10 values in my set. By the way i am totally excited about your cool programming environment. Keep on the good work. I justed started to explore it and can say it is awesome to work with. Kind regards, Fabian

June 14, 2014

Re: [Pharo-users] Omnibase

by Ben Coman

Glenn Swanlund wrote: > On Windows 7, I'm trying to install OmniBase in Pharo-30846. I get an > error for ExternalWindowsOSProcess >> doesNotUnderstand defaultShellPath. > > Does anyone have a solution for this? > > Regards, > Glenn At a guess you could start by defining... ExternalWindowsOSProcess >>defaultShellPath "Default shell to run"\ | path | path := 'C:\Windows\System32\cmd.exe'. (OSProcess fileExists: path) ifTrue: [^ path] ifFalse: [self notify: path, ' not found'] but then whatever passed to an expected unix shell might not be suitable for the windows shell. Alternatively maybe Cygwin needs to be installed and used ? HTH, ben

June 14, 2014

Omnibase

by Glenn Swanlund

On Windows 7, I'm trying to install OmniBase in Pharo-30846. I get an error for ExternalWindowsOSProcess >> doesNotUnderstand defaultShellPath. Does anyone have a solution for this? Regards, Glenn

June 14, 2014

Re: [Pharo-users] Roassal forms+edges

by rosariosm

Now the second image (view with edges) shows little triangles with the form i added. When i move this triangles, i can see parts of the picture. What are this triangles and how could i resize them? <http://forum.world.st/file/n4762999/triangles.png> Cheers, Rosario -- View this message in context: http://forum.world.st/Roassal-forms-edges-tp4762851p4762999.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

June 13, 2014

Re: [Pharo-users] Custom layout in Spec

by webwarrior

I implemented SpecTableLayout, which uses TableLayout policy. Wasn't that hard, beacuse actual layouting *is* done in Morphic. Interface of SpecTableLayout is somewhat similar to SpecLayout. All table layout options are supported (see http://wiki.squeak.org/squeak/2340) One thing that is not part of TableLayout and was added by me is spacer - invisible element that is either fixed size or flexible (aka spring). Most Spec widgets were designed to occupy all available space, and in order to change that they may be wrapped into single-element table layout. This is done using #add:wrapped: or #add:withSpec:wrapped with last argument being block (a similar to #newRow: and #newColumn:). For example: Now I wonder how do I transfer these changes from Monticello to GitHub in order to make pull request? -- View this message in context: http://forum.world.st/Custom-layout-in-Spec-tp4762142p4762995.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

June 13, 2014

Re: [Pharo-users] Pharo3.0 + Swap Ctrl and Alt keys

by Thushar G R

Can anyone confirm this 1) Open fresh Pharo3 image in Windows. 2) Go to *TextEditor>> buildTextEditorShortcutsOn:* 3) Change the last line from *(aBuilder shortcut: #cursorEnd)* * category: #TextEditor* * default: Character end ctrl win | Character end ctrl unix | Character end command mac* * do: [ :target :morph :event | target cursorEnd: event ]* To *(aBuilder shortcut: #cursorEnd)* * category: #TextEditor* * default: Character end ctrl win | Character end ctrl unix | Character end command mac* * do: [ :target :morph :event |* * self halt.* * target cursorEnd: event ]* 4) Take a workspace and do "*Ctrl + d*" on "*1 inspect.*" What happens for me is that it goes into the halt that we placed in step 3). And what i dont understand is why do it match the Keystroke "*Ctrl+d*" with "*Ctrl + END*". If you go back the stack you will find that's exactly whats happening. Let me know if i made some mistakes here.. Thanks for helping, G R Thushar *G R Thushar* *Team Leader(Technology),* *Signos Software Solutions Pvt. Ltd.* *Ground Floor **A.R Plaza, TC 11/43 (2),* *P.M.G Junction,* *Thiruvananthapuram, 695004. Kerala, India.* *Web: www.signossolutions.com <http://www.signossolutions.com>* Email: thushar.gr(a)signossolutions.com, thushar.gr(a)gmail.com Phone: +919846577772 On Fri, Jun 13, 2014 at 5:36 PM, phil(a)highoctane.be <phil(a)highoctane.be> wrote: > On Fri, Jun 13, 2014 at 1:30 PM, Thushar G R <thushar.gr(a)gmail.com> wrote: > >> Hi all, >> >> In Pharo 2.0 i find that "Ctrl+d" would do the doIt in workspace. In >> Pharo3.0 for doIt, i need to do "Alt+d". >> >> 1) Is this change intentional? >> 2) if so am i advised to practice all the shortcuts using Alt keys >> instead of Ctrl key for pahro 3? >> 3) Any way to bring back the Ctrl/Alt swap settings (I have asked this >> before in stackoverflow) >> 4) Any one knows a hack or workaround for this? >> >> Actually i was trying to figure out point 4) but no luck till now. I >> changed it in keymappings builders in AbstractNautilusUI and similar places >> but it simply dont work. >> >> Any help is appreciated and TIA. >> >> G R Thushar >> > > I can't help you on that specific. I'll just add some more questions: > > Why on Linux can't I use the Cmd/Alt/Whatever + click on a method name > and get to the implementors list like I can on Mac and Windows? (Mac: > Cmd-Click, Win: Right-Alt-Click) > > Is this a VM thing? > > Phil > >

June 13, 2014

Re: [Pharo-users] Typo in RenoirSt configuration

by gcotelli

Merged in the project. Thanks Stephan! -- View this message in context: http://forum.world.st/Typo-in-RenoirSt-configuration-tp4762436p4762983.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

June 13, 2014

Re: [Pharo-users] Pharo3.0 + Swap Ctrl and Alt keys

by phil＠highoctane.be

On Fri, Jun 13, 2014 at 1:30 PM, Thushar G R <thushar.gr(a)gmail.com> wrote: > Hi all, > > In Pharo 2.0 i find that "Ctrl+d" would do the doIt in workspace. In > Pharo3.0 for doIt, i need to do "Alt+d". > > 1) Is this change intentional? > 2) if so am i advised to practice all the shortcuts using Alt keys instead > of Ctrl key for pahro 3? > 3) Any way to bring back the Ctrl/Alt swap settings (I have asked this > before in stackoverflow) > 4) Any one knows a hack or workaround for this? > > Actually i was trying to figure out point 4) but no luck till now. I > changed it in keymappings builders in AbstractNautilusUI and similar places > but it simply dont work. > > Any help is appreciated and TIA. > > G R Thushar > I can't help you on that specific. I'll just add some more questions: Why on Linux can't I use the Cmd/Alt/Whatever + click on a method name and get to the implementors list like I can on Mac and Windows? (Mac: Cmd-Click, Win: Right-Alt-Click) Is this a VM thing? Phil

June 13, 2014

Pharo3.0 + Swap Ctrl and Alt keys

by Thushar G R

Hi all, In Pharo 2.0 i find that "Ctrl+d" would do the doIt in workspace. In Pharo3.0 for doIt, i need to do "Alt+d". 1) Is this change intentional? 2) if so am i advised to practice all the shortcuts using Alt keys instead of Ctrl key for pahro 3? 3) Any way to bring back the Ctrl/Alt swap settings (I have asked this before in stackoverflow) 4) Any one knows a hack or workaround for this? Actually i was trying to figure out point 4) but no luck till now. I changed it in keymappings builders in AbstractNautilusUI and similar places but it simply dont work. Any help is appreciated and TIA. G R Thushar

June 13, 2014

Re: [Pharo-users] Coding by sending messages

by Marcus Denker

On 13 Jun 2014, at 06:53, Tudor Girba <tudor(a)tudorgirba.com> wrote: > > On Wed, Jun 11, 2014 at 11:31 AM, Matthew Chadwick <post(a)celeriac.net> wrote: > hello, > > It's interesting that in Smalltalk, coding is still done via a text editor, not by sending messages to objects (except in the background, parsing & compiling etc). I've been playing with coding by messaging nodes in the AST with a view to coding this way via Roassal graph visualizations of object dependencies combined with some nice graphical tools. Has any work on this way of coding been done before ? What I have in mind is a keyboard-centric, fast system designed as an alternative to the text editor, with a focus on top-down style coding. > The direction to not use text but objects for code is very interestingâ¦ a lot of nice experiments could be done on top of this. One direction is to use more structured ways of editingâ¦ but one needs to take care that in the past (end of the 80ties) all the tries of structured editors where not really successful. But having an AST like representation instead of text would not preclude to have an editor interface that provided both the flexibility of a text editor with the knowledge and power of a real object representation of code belowâ¦ very interesting direction. Marcus

June 13, 2014

Re: [Pharo-users] Coding by sending messages

by Tudor Girba

Hi Matthew, Is this an ongoing project? If yes, I would be interested in learning more about your effort and see if there are no synergies with the work on GToolkit. Doru On Wed, Jun 11, 2014 at 11:31 AM, Matthew Chadwick <post(a)celeriac.net> wrote: > hello, > > It's interesting that in Smalltalk, coding is still done via a text > editor, not by sending messages to objects (except in the background, > parsing & compiling etc). I've been playing with coding by messaging nodes > in the AST with a view to coding this way via Roassal graph visualizations > of object dependencies combined with some nice graphical tools. Has any > work on this way of coding been done before ? What I have in mind is a > keyboard-centric, fast system designed as an alternative to the text > editor, with a focus on top-down style coding. > -- www.tudorgirba.com "Every thing has its own flow"

June 13, 2014

Roassal forms+edges

by rosariosm

Hi, I'm trying to do a visualization that shows a group of twitter users connected to each other. It shows the images from the users but when i add the edges, the images dissapear. Here's the code: view := RTView new. e1 := RTElement on: user1. e2 := RTElement on: user2. elements := OrderedCollection newFrom: {e1. e2}. elements do: [ :e | | label shape form edge | label := RTLabel new text: e1 model name. form := Form fromFileNamed: 'aFilename'. shape := RTBitmap new form: form. e + (RTVerticalCompositeShape new shape1: shape; shape2: label) ]. line := RTArrow new color: Color red. view add: (line edgeFrom: e1 to: e2 ). view addAll: elements. view open. View without edges <http://forum.world.st/file/n4762851/withoutEdges.png> View with edges <http://forum.world.st/file/n4762851/withEdges.png> Anyone know how to fix this (show both images and edges)?? Thanks, Rosario -- View this message in context: http://forum.world.st/Roassal-forms-edges-tp4762851.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

June 12, 2014

Re: [Pharo-users] Gradualtalk

by Johan Fabry

Hi Bob, AFAIK itâs not required for the subclasses to use TTyped as well. If that does not work in your case do tell us, that means thereâs a bug somewhere. Gradualtalk, as is, is a research prototype and not ready for production at all. We are doing experiments with GT, but it would take a considerable effort to have it ready for daily use in âreal lifeâ situations. Sadly we do not have such resources at our disposal. :-( On Jun 12, 2014, at 12:50 PM, Bob Williams <rwilliams19(a)cox.net> wrote: > Johan > > Thank you for pointing me to the VM download on the Pharo site, that worked > after I changed Pharo.exe to Gradualtalk.exe. Is there a more thorough > reference than the quick reference (I have the paper Gradual Typing For > Smalltalk)? I noticed that Magnitude, Number and Integer have uses:TTyped. > The quick reference stated that the class and it subclasses would have the > type system activated, so are the last two required or is the reference in > error? > > Will this typing be incorporated into Pharo or is it dead? > > Thanks > > bw > > > > -- > View this message in context: http://forum.world.st/Gradualtalk-tp4762633p4762831.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > > ---> Save our in-boxes! http://emailcharter.org <--- Johan Fabry - http://pleiad.cl/~jfabry PLEIAD lab - Computer Science Department (DCC) - University of Chile

June 12, 2014

Re: [Pharo-users] Emails

by Bob Williams

Bernat Thanks, that's the one. It is now Bookmarked. bw -- View this message in context: http://forum.world.st/Emails-tp4762288p4762833.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

June 12, 2014

Re: [Pharo-users] Gradualtalk

by Bob Williams

Johan Thank you for pointing me to the VM download on the Pharo site, that worked after I changed Pharo.exe to Gradualtalk.exe. Is there a more thorough reference than the quick reference (I have the paper Gradual Typing For Smalltalk)? I noticed that Magnitude, Number and Integer have uses:TTyped. The quick reference stated that the class and it subclasses would have the type system activated, so are the last two required or is the reference in error? Will this typing be incorporated into Pharo or is it dead? Thanks bw -- View this message in context: http://forum.world.st/Gradualtalk-tp4762633p4762831.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

June 12, 2014

Re: [Pharo-users] [Pharo-dev] [ANN] Base62/Base36

by Norbert Hartl

Hmm *cough* http://smalltalkhub.com/#!/~NorbertHartl/Base62 Norbert Am 12.06.2014 um 13:12 schrieb Norbert Hartl <norbert(a)hartl.name>: > Just for the record. Iâve uploaded a package to smalltalkhub that contains util classes to en-/decode values into/from Base62/Base36. > > Base62/Base36 encode numbers in short strings. These are used e.g. by url shortener services from google, bit.ly etc. > > Base36 uses lowercase letters and numbers to encode, Base62 uses all characters from Base36 plus all uppercase letters. Base62 produces smaller strings while Base36 produces case insensitive ones. > > Example: > > Base62 fromNumber: 100000 -> 'q0Uâ > > Base36 fromNumber: 100000 -> â255s' > > FYI, > > Norbert > >

June 12, 2014

[ANN] Base62/Base36

by Norbert Hartl

Just for the record. Iâve uploaded a package to smalltalkhub that contains util classes to en-/decode values into/from Base62/Base36. Base62/Base36 encode numbers in short strings. These are used e.g. by url shortener services from google, bit.ly etc. Base36 uses lowercase letters and numbers to encode, Base62 uses all characters from Base36 plus all uppercase letters. Base62 produces smaller strings while Base36 produces case insensitive ones. Example: Base62 fromNumber: 100000 -> 'q0Uâ Base36 fromNumber: 100000 -> â255s' FYI, Norbert

June 12, 2014

Re: [Pharo-users] Base64 encoding + UTF8 ?

by Henrik Johansen

On 11 Jun 2014, at 10:28 , Sven Van Caekenberghe <sven(a)stfx.eu> wrote: > Bonsoir FranÃ§ois, > > From the class comment of ZnBase64Encoder: > > [...] > Note that to encode a String as Base64, you first have to encode the characters as bytes using a character encoder. > [...] > > Sending #asByteArray to a String is the same as doing no encoding (or doing null encoding). > > Consider: > > ZnBase64Encoder new encode: (ZnUTF8Encoder new encodeString: 'tamÃ¨reenslipdeguerre'). > > => 'dGFtw6hyZWVuc2xpcGRlZ3VlcnJl' > > ZnBase64Encoder new encode: (ZnByteEncoder iso88591 encodeString: 'tamÃ¨reenslipdeguerre'). > > => 'dGFt6HJlZW5zbGlwZGVndWVycmU=' > > ZnBase64Encoder new encode: (ZnNullEncoder new encodeString: 'tamÃ¨reenslipdeguerre'). > > => 'dGFt6HJlZW5zbGlwZGVndWVycmU=' > > The last two are often the same, and thus equivalent to #asByteArray, but not always. > > HTH, > > Sven In other words, Base64 isnât really an encoding, itâs a transfer format, whose purpose is to only transmit bytes with "safe" values that have no chance of being interpreted as control sequences by a set of protocols. Encoding Strings -> Bytes is a separate concern. Cheers, Henry

June 12, 2014

Re: [Pharo-users] Base64 encoding + UTF8 ?

by FranÃ§ois Stephany

Oh stupid me! Thanks a lot Sven, crystal clear explanations (and class comments!), as always :) On Wed, Jun 11, 2014 at 10:28 PM, Sven Van Caekenberghe <sven(a)stfx.eu> wrote: > Bonsoir FranÃ§ois, > > From the class comment of ZnBase64Encoder: > > [...] > Note that to encode a String as Base64, you first have to encode the > characters as bytes using a character encoder. > [...] > > Sending #asByteArray to a String is the same as doing no encoding (or > doing null encoding). > > Consider: > > ZnBase64Encoder new encode: (ZnUTF8Encoder new encodeString: > 'tamÃ¨reenslipdeguerre'). > > => 'dGFtw6hyZWVuc2xpcGRlZ3VlcnJl' > > ZnBase64Encoder new encode: (ZnByteEncoder iso88591 encodeString: > 'tamÃ¨reenslipdeguerre'). > > => 'dGFt6HJlZW5zbGlwZGVndWVycmU=' > > ZnBase64Encoder new encode: (ZnNullEncoder new encodeString: > 'tamÃ¨reenslipdeguerre'). > > => 'dGFt6HJlZW5zbGlwZGVndWVycmU=' > > The last two are often the same, and thus equivalent to #asByteArray, but > not always. > > HTH, > > Sven > > On 11 Jun 2014, at 21:56, FranÃ§ois Stephany <tulipe.moutarde(a)gmail.com> > wrote: > > > I might hit some problem with Base64 encoding in there. > > It seems that Pharo does not use UTF8 for its Base64 encoding. > > > > I'm probably missing something related to Base64 encoding... > > > > In Pharo 3.0: > > > > ZnBase64Encoder new encode: 'tamÃ¨reenslipdeguerre' asByteArray. > > -> 'dGFt6HJlZW5zbGlwZGVndWVycmU=' > > > > 'tamÃ¨reenslipdeguerre' base64Encoded. > > -> 'dGFt6HJlZW5zbGlwZGVndWVycmU=' > > > > In Ruby 2.0: > > > > Base64.strict_encode64("tamÃ¨reenslipdeguerre") > > -> dGFtw6hyZWVuc2xpcGRlZ3VlcnJl > > > > http://www.motobit.com/util/base64-decoder-encoder.asp > > (iso-8859-1) > > tamÃ¨reenslipdeguerre -> dGFt6HJlZW5zbGlwZGVndWVycmU= > > > > http://www.motobit.com/util/base64-decoder-encoder.asp > > (utf8) > > -tamÃ¨reenslipdeguerre > dGFtw6hyZWVuc2xpcGRlZ3VlcnJl > > >

June 11, 2014

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