April 2011 - Pharo-users - lists.pharo.org

Re: [Pharo-users] Writing to the std output

by HernÃ¡n Morales Durand

Hola Nico, The "standard output" in most Smalltalks is usually considered the Transcript. You may use it in a method like this: >>log: aString " Write aString to the transcript streamer " Transcript cr; show: TimeStamp current; space; show: aString is that useful to you? Saludos 2011/4/3 NicolÃ¡s Paez <nicopaez(a)gmail.com>: > Hi, I need start my image, run a script and write some messages to the > standard output. > is there a way of writing to standard output? > > Saludos! > Nico. > blog: nicopaez.wordpress.com > -- HernÃ¡n Morales Information Technology Manager, Institute of Veterinary Genetics. National Scientific and Technical Research Council (CONICET). La Plata (1900), Buenos Aires, Argentina. Telephone: +54 (0221) 421-1799. Internal: 422 Fax: 425-7980 or 421-1799.

April 3, 2011

Writing to the std output

by NicolÃ¡s Paez

Hi, I need start my image, run a script and write some messages to the standard output. is there a way of writing to standard output? Saludos! Nico. blog: nicopaez.wordpress.com

April 3, 2011

Re: [Pharo-users] [Pharo-project] Participating to a cool project

by StÃ©phane Ducasse

tx hilaire keep pushing. stef On Apr 2, 2011, at 8:55 PM, Hilaire Fernandes wrote: > Dr. Geo (http://www.ofset.org/drgeo) is becoming better release after > release. It is proposed for all three major systems and the XO OLPC > laptop for kid. > > It has been downloaded several thousand of times, it is used in several > place in the world, we even get a TV show only for DrGeo > http://www.youtube.com/watch?v=wdx7vJwPmcA > > Yet it is a neat way to promote Smalltalk as DrGeo scripting feature > expose the user to the Smalltalk language and environment. > Far beyond my expectation, teachers are exploring DrGeo to use it as an > environment to teach programming, see this nice French article: > http://revue.sesamath.net/spip.php?article330 > > I hope more will come. > > If you are interested to participate to a cool project, for coding, > documenting, testing, promoting; come and join, there are many stuff to do: > > * test > * report defects > * translate the user interface of the software > * document and translate the documentation > * design DrGeo courses > * design graphics > * learn from DrGeo design and fix bugs > * learn from DrGeo design and implement new features > > More to read at > http://community.ofset.org/index.php/Community_DrGeo#Participating_to_the_P… > > -- > Education 0.2 -- http://blog.ofset.org/hilaire > >

April 3, 2011

Re: [Pharo-users] Cursor location in a form

by Hilaire Fernandes

I will check if b has the focus, no? Hilaire Le 02/04/2011 23:14, DougEdmunds a Ã©crit : > I have a form with several fields (a,b,c) and a button. The button should > only be enabled when > the cursor is in field b. How can I tell when the cursor is in that field? > > builder newButtonFor: self > action: #openLessonListEditor > getEnabled: #hasSelectedCurrentLesson > label: 'Edit current lesson' > help: 'Edit current lesson'. > > I want #hasSelectedCurrentLesson to return true only when the > cursor is in field b. > > -- > View this message in context: http://forum.world.st/Cursor-location-in-a-form-tp3422745p3422745.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > > -- Education 0.2 -- http://blog.ofset.org/hilaire

April 3, 2011

Cursor location in a form

by DougEdmunds

I have a form with several fields (a,b,c) and a button. The button should only be enabled when the cursor is in field b. How can I tell when the cursor is in that field? builder newButtonFor: self action: #openLessonListEditor getEnabled: #hasSelectedCurrentLesson label: 'Edit current lesson' help: 'Edit current lesson'. I want #hasSelectedCurrentLesson to return true only when the cursor is in field b. -- View this message in context: http://forum.world.st/Cursor-location-in-a-form-tp3422745p3422745.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

April 2, 2011

Re: [Pharo-users] [Vm-dev] [OT] Blog sequence "Journey through the VM"

by Mariano Martinez Peck

Thanks everybody for the nice welcome and words. The journey has already its departure: http://marianopeck.wordpress.com/2011/04/02/departure-vm-introduction/ I won't bother anymore in the mailing lists...so if you want to follow, check the website or use rss/mail notification. Cheers Mariano On Fri, Apr 1, 2011 at 1:31 AM, David T. Lewis <lewis(a)mail.msen.com> wrote: > > Great! Thanks for doing this and I'm looking forward to reading more > of your blog posts. > > Dave > > On Thu, Mar 31, 2011 at 10:28:40PM +0200, Mariano Martinez Peck wrote: > > > > Hi folks. I will start a sequence of VM related posts called ?Journey > > through the VM?, similar to what Igor did in Deep Smalltalk > > School< > http://www.inria.fr/centre-de-recherche-inria/lille-nord-europe/agenda/smal… > >. > > My main focus is that a regular Smalltalker, without any knowledge in VM > > stuff can understand the basis of it (ObjectMemory, Interpreter, etc). In > > addition, I expect the reader can download, change, compile, run, and > debug > > (and why not fixing?) the VM. > > > > Later on in the journey, I would also like to talk about what the > compiler > > does, what bytecodes are, how to read them, how they are mapped to the > VM, > > etc. I will also show some hooks or tricks that the VM provides and that > are > > not always known. Moreover, I will explain what a primitive is, how they > are > > executed by the VM, how you can write your own primitives, etc. FFI and > > writing your own plugin are also in my plans. > > > > It is important to notice that all these posts are thought for VM > newbies. I > > would appreciate if there can be some VM hackers paying attention that I > > don't say stupid things. > > > > http://marianopeck.wordpress.com/ > > > > Cheers > >

April 2, 2011

Re: [Pharo-users] More elegant way?

by Marcus Denker

On Apr 1, 2011, at 10:10 AM, Friedrich Dominicus wrote: > AxiNat <tibabenfortlapalanca(a)gmail.com> writes: > >> Hi Friederich, here's two simple optimizations: >> >> #(#nul #soh #stx #etx #eot #enq #ack #bel #bs #tab #lf) >> withIndexDo: [:each :index | >> self class compile: each asString , ' ^ asciiField at: ', index >> asString.]. >> >> Array withAll: #(1 2 3) is equivalent to #(1 2 3), and if you're not going to >> use the array again, you don't even need to assign it to a variable :) > Well I do not want the compile part with String So you could override #doesNotUnderstand: and there check if someone sends a message #etx (and the others) and then return the value. (you then want to store the value in a dictionary keyed by the the message name). doesNotUnderstand: aMessage | dict | dict := (#(nul soh stx etx eot enq ack bel bs tab lf) collectWithIndex: [:elem :index | elem -> index]) asDictionary. ^dict at: aMessage selector ifAbsent: [^super doesNotUnderstand: aMessage]. But of course doesNotUnderstand: is always a bit magic... and should be used with care. As for strings stiched together: yes, *horrible*. And we plan to move on to something better soon. In general, I like the idea to have a reflective model of the structure of methods... When talking about code, we should not use string... the Quasi-Quoting from Helvetia is far better than string manipulation: http://scg.unibe.ch/research/helvetia/examples#168249369 That combined with a good AST should make these things much easier. Marcus -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

April 1, 2011

Re: [Pharo-users] fileIn without initializing

by AxiNat

Hi Igor and list, Thanks, that would work if I were to do it manually, but I'd need to do that automatically for .st files provided by others, so I'm thinking of something of the sort: Subclass PositionableStream and override fileInAnnouncing:, so that it scans for chunks that contain exactly two words the second one of which is 'initialize'. I'm pretty positive this could work, but it sure is a terribly ugly hack... can you think of some alternative? Thanks! Bernat Romagosa.

April 1, 2011

Re: [Pharo-users] fileIn without initializing

by Igor Stasenko

On 1 April 2011 16:47, AxiNat <tibabenfortlapalanca(a)gmail.com> wrote: > Hi list, > Is there a way to fileIn a .st file without having the classes to be > automatically initialized? Yes. You can open the subject file using file browser tool, and instead of using 'install' or 'file in' command, press 'changes' button and select only stuff you wanna load. Another way is to load .st file into workspace and remove all class initializers, then save it and file in :) > Thanks! > Bernat Romagosa -- Best regards, Igor Stasenko AKA sig.

April 1, 2011

fileIn without initializing

by AxiNat

Hi list, Is there a way to fileIn a .st file without having the classes to be automatically initialized? Thanks! Bernat Romagosa

April 1, 2011