December 2012 - Pharo-dev - lists.pharo.org

Re: [Pharo-project] on blockclosure currying

by Frank Shearar

On 26 December 2012 00:54, SebastiÃ¡n Krynski <skrynski(a)gmail.com> wrote: > Esteban, thanks for your answer.. I think i need to dynamically create a > block which accepts exactly n parameters , so that the new block would > behave as expected. Is that possible ? Is that what you had in mind? You have read Vassili Bykov's posts on the subject, right? Starting here: http://blog.3plus4.org/2007/03/23/currying-in-smalltalk/ frank > 2012/12/25 Esteban A. Maringolo <emaringolo(a)gmail.com> > >> You can use #valueWithArguments: or #valueWithPossibleArgs: instead of >> using >> #value:value:value: >> >> numArgs instVar might be your friend in what you want to achieve. >> >> Regards, >> >> >> >> -- >> View this message in context: >> http://forum.world.st/on-blockclosure-currying-tp4660895p4660896.html >> Sent from the Pharo Smalltalk mailing list archive at Nabble.com. >> >

Dec. 26, 2012

Re: [Pharo-project] An issue with Zinc-HTTP

by Sven Van Caekenberghe

Dennis, On 26 Dec 2012, at 03:57, Dennis Schetinin <chaetal(a)gmail.com> wrote: > Trying to load Zinc-HTTP, I encounter a problem: Zinc-HTTP package removes #asZnUrl and #asZnMimeType from String (added by Zinc-Resource-Meta-Core). > > I don't fully understand why it occurs. The workaround is straightforward: to add those methods manually after load. > > > Best regards, > Dennis Schetinin There were indeed some repacking changes in Zn. Short answer: ConfigurationOfZincHTTPComponents load. Or even ConfigurationOfZincHTTPComponents project latestVersion load. Long answer (from my CI build script, remove the ! if necessary): "Load Zinc" Gofer new url: 'http://mc.stfx.eu/ZincHTTPComponents'; package: 'Zinc-Character-Encoding-Core'; package: 'Zinc-Character-Encoding-Tests'; package: 'Zinc-Resource-Meta-Core'; package: 'Zinc-Resource-Meta-Tests'; package: 'Zinc-HTTP'; package: 'Zinc-FileSystem'; package: 'Zinc-Tests'; package: 'Zinc-WebSocket-Core'; package: 'Zinc-WebSocket-Tests'; load. ! "Load Zodiac" Gofer new url: 'http://mc.stfx.eu/Zodiac'; package: 'Zodiac-Core'; package: 'Zodiac-Tests'; package: 'Zodiac-Extra'; load. ! "Load Zinc support for Zodiac" Gofer new url: 'http://mc.stfx.eu/ZincHTTPComponents'; package: 'Zinc-Zodiac'; load. ! { ZnMimeType. ZnByteEncoder. ZnConstants. ZnNetworkingUtils. ZnSingleThreadedServer. ZnServer } do: [ :each | each initialize ]. HTH, Sven -- Sven Van Caekenberghe http://stfx.eu Smalltalk is the Red Pill

Dec. 26, 2012

[Pharo-project] An issue with Zinc-HTTP

by Dennis Schetinin

Trying to load Zinc-HTTP, I encounter a problem: Zinc-HTTP package removes #asZnUrl and #asZnMimeType from String (added by Zinc-Resource-Meta-Core). I don't fully understand why it occurs. The workaround is straightforward: to add those methods manually after load. Best regards, Dennis Schetinin

Dec. 26, 2012

Re: [Pharo-project] Is there a simple example of how to create a GUI form in Pharo or Squeak?

by Ben Coman

First, pharo-users is a better forum for such questions. That said, I recently used Polymorph for the first time. I found Laurent Laffont's Pharocast [2] a good tutorial. [1] http://lists.gforge.inria.fr/mailman/listinfo/pharo-users [2] http://www.pharocasts.com/2011/02/pharo-gui-with-polymorph.html Frank Church wrote: > Is there a simple example of how to create a GUI form in Pharo or Squeak? > > I want to accomplish a simple task with a form: > > 1. Create a form with a button and edit control and 2 text areas. > > 2. Enter a value into the edit control. > > 3. Run a database query using the value in the edit control as a parameter > and return the results in text area 1 > > 4. Run a shell script using the value in the edit control as a parameter > and return the results in text area 2 > > I have OpenDBX running successfully and I don't think using OSProcess and > CommandShell will be that difficult. > > Creating the form is the part I don't know how to accomplish. > > I have done some searching and there seems to be a surprising dearth of > info on how to create a simple GUI from scratch using Pharo or Squeak. > >

Dec. 26, 2012

Re: [Pharo-project] on blockclosure currying

by SebastiÃ¡n Krynski

Esteban, thanks for your answer.. I think i need to dynamically create a block which accepts exactly n parameters , so that the new block would behave as expected. Is that possible ? Is that what you had in mind? 2012/12/25 Esteban A. Maringolo <emaringolo(a)gmail.com> > You can use #valueWithArguments: or #valueWithPossibleArgs: instead of > using > #value:value:value: > > numArgs instVar might be your friend in what you want to achieve. > > Regards, > > > > -- > View this message in context: > http://forum.world.st/on-blockclosure-currying-tp4660895p4660896.html > Sent from the Pharo Smalltalk mailing list archive at Nabble.com. > >

Dec. 26, 2012

Re: [Pharo-project] on blockclosure currying

by Esteban A. Maringolo

You can use #valueWithArguments: or #valueWithPossibleArgs: instead of using #value:value:value: numArgs instVar might be your friend in what you want to achieve. Regards, -- View this message in context: http://forum.world.st/on-blockclosure-currying-tp4660895p4660896.html Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

Dec. 26, 2012

[Pharo-project] on blockclosure currying

by SebastiÃ¡n Krynski

Hey there, I' ve been thinking about possible implementations for adding curryfication to block closures. Here's how it would be used, following by the implementation. addBinary := [:p1 :p2 | p1 + p2] . add3 := addBinary curry: 3. add3 curry: 5. 8 BlockClosure >> curry: aParameter (numArgs = 0) ifTrue: [Error signal.]. (numArgs = 1) ifTrue: [^ self value: aParameter.]. (numArgs = 2) ifTrue: [ ^ [:p1 | self value: aParameter value: p1] ]. (numArgs = 3) ifTrue: [ ^ [:p1 :p2 | self value: aParameter value: p1 value: p2] ]. (numArgs = 4) ifTrue: [ ^ [:p1 :p2 :p3 | self value: aParameter value: p1 value: p2 value: p3] ]. Yes, I know the implementation works only for a fixed number of arguments. Any ideas on how to dynamically create a block with an arbitary number of parameters.? Maybe creating the source code string and compiling it? Basically I 'd like to create this block : ^ [:p1 .. :pn | self value: aParameter value: p1 ... value: pn ] Thanks, Seba

Dec. 25, 2012

Re: [Pharo-project] About morph layout

by StÃ©phane Ducasse

I like this decomposition of a large interface into separate objects. Stef > > column := AlignmentMorph newColumn. > > column color: Color white. > column layout shrinkWrap. "v and h both" > > column border > width: 0; > color: Color black. > > column childLayout > inset: 1; > wrapCentering: #center; > cellPositioning: #center. > > Cons: > - a code is a bit more elaborate. That because, of course, we cannot > merge everything into single cascade. > > Pros: > - from code it is clear, which properties belong to which parts of > functionality. You cannot confuse, for instance, whether > 'wrapCentering' > property controls morph's own layout or a layout of its children > - most important, we can considerably shrink Morph's protocol by > removing all direct accessors and instead put them into delegated > behaviors. > > More than that, a delegates don't need to be a dummy state holders > (like most of properties are now), but actually an object(s) which > conform to certain protocol.. > > For instance, if we have a 'border' as a delegate, and morph wants to > draw it, it could just tell: > > MyMorph>>drawOn: aCanvas > self border drawOn: aCanvas > > btw, then it is actually makes sense having a BorderedMorph subclass, which > a) introduces 'border' delegate > b) cares to draw its border > in contrast to Morph who shouldn't. > > As well as in case of layouts, you can tell: > > morph layout changed. > > or > > morph childLayout layOutChildren. > > etc. > > > -- > Best regards, > Igor Stasenko. >

Dec. 25, 2012

Re: [Pharo-project] Error 400 when pushing to Smalltalk with metacello

by Damien Pollet

On 24 December 2012 00:26, Camillo Bruni <camillobruni(a)gmail.com> wrote: > maybe silly question... are you 100% sure that you have the same > repository (aka credentials) for the normal package and the config-package? yeah at one point I had two repositories setup (MC shenanigans againâ¦) but I removed one, added the good one to both packages, & still getting the error -- Damien Pollet type less, do more [ | ] http://people.untyped.org/damien.pollet

Dec. 25, 2012

Re: [Pharo-project] Is there a simple example of how to create a GUI form in Pharo or Squeak?

by Fernando Olivero

Hi, two good sources of information on GUI building are http://www.pharocasts.com/2011/02/pharo-gui-with-polymorph.html?utm_source=… http://book.pharo-project.org/book/LanguageAndLibraries/GUI/?_s=yllsSvKBo5c… They're not that hard to find (if you are aware of the Collab book and the pharocasts). You might want to check out Glamour also, http://www.themoosebook.org/book/internals/glamour Fernando On Mon, Dec 24, 2012 at 11:22 AM, Frank Church <vfclists(a)gmail.com> wrote: > Is there a simple example of how to create a GUI form in Pharo or Squeak? > > I want to accomplish a simple task with a form: > > 1. Create a form with a button and edit control and 2 text areas. > > 2. Enter a value into the edit control. > > 3. Run a database query using the value in the edit control as a parameter > and return the results in text area 1 > > 4. Run a shell script using the value in the edit control as a parameter > and return the results in text area 2 > > I have OpenDBX running successfully and I don't think using OSProcess and > CommandShell will be that difficult. > > Creating the form is the part I don't know how to accomplish. > > I have done some searching and there seems to be a surprising dearth of > info on how to create a simple GUI from scratch using Pharo or Squeak. > > -- > Frank Church > > ======================= > http://devblog.brahmancreations.com >

Dec. 25, 2012