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[Pharo-project] changes to existing class definitions
by Johannes Rasche Nov. 14, 2011

Nov. 14, 2011

if I wanna add some methods to existing classes I create categories like "*packageName" but how to handle changes to class definitions? what is the recommended way to do that? I'm not sure it's good to change the category name Johannes

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[Pharo-project] gsub like solution for Pharo/Smalltalk
by mail list Nov. 14, 2011

Nov. 14, 2011

I have a dictionary of keys and values. I have a text string in which the keys are marked with before and ending symbols. In ruby to replace the key with the value in the text string is reasonably simple. (eg Dictionary.each { key,value | string.gsub!(key,value) } - or similar to this. While I don't mind rolling my version of this in Smalltalk, just exploring the regex code and the streams code it is not obvious where is the easiest place to start. If someone would put their comments on where to start I will build the functionality and put it up on squeaksource since I think it is common requirement. S.

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[Pharo-project] Sexy font look
by StÃ©phane Ducasse Nov. 14, 2011

Nov. 14, 2011

Hi guys we are preparing some videos around moose and we would like to use good (and large) fonts. Do you have some experience/suggestions in this area? Stef

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[Pharo-project] GlorpDBX PostgreSQL Patch
by Sven Van Caekenberghe Nov. 14, 2011

Nov. 14, 2011

Hi, I have a patch for Glorp(DBX) PostgreSQL to support the newer bytea hex format (see file:///usr/local/pgsql/share/doc/html/datatype-binary.html#AEN5037). I can't write to the repository, so here it is: PostgreSQLPlatform>>#convertSQLStringToByteArray: aString for: aType aString isNil ifTrue: [ ^ nil ]. ^ (aString beginsWith: '\x') ifTrue: [ self convertHexSQLStringToByteArray: aString ] ifFalse: [ self convertEscapeSQLStringToByteArray: aString ] PostgreSQLPlatform>>#convertEscapeSQLStringToByteArray: aString | aStream str | aStream := (ByteArray new: aString size // 4) writeStream. str := aString readStream. [str atEnd] whileFalse: [ |nextChar| nextChar := str next. aStream nextPut: (nextChar = $\ ifTrue: [str peek = $\ ifTrue: [str next asInteger] ifFalse: [Number readFrom: (str next: 3) base: 8]] ifFalse: [nextChar asInteger]) ]. aStream close. ^aStream contents PostgreSQLPlatform>>#convertHexSQLStringToByteArray: aString ^ ByteArray new: (aString size // 2) - 1 streamContents: [ :out | | in | (in := aString readStream) skip: 2. [ in atEnd ] whileFalse: [ out nextPut: (Number readFrom: (in next: 2) base: 16) ] ] #convertEscapeSQLStringToByteArray: is the old code, unmodified; #convertHexSQLStringToByteArray: is new. This might be of use upstream as well, I don't really know. If it would help, I could save this as an MC package somewhere. Regards, Sven

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Re: [Pharo-project] [Moose-dev] mooseentitystate
by jannik.laval Nov. 13, 2011

Nov. 13, 2011

Hi Stef, It is not so simple :) Take this example from Moose: === LANNode methodDictionary collect:[:e | e timeStamp ifNotEmpty: [:s | s subStrings first ]] === LANNode has no author, so if you take the first substring you will have the date of creation. I have not a good solution, but for my scripts, I test the first character of the substring: if it is a letter, this is an author, else, there is no author. === ((myString subStrings) first at:1) isLetter === Cheers, On Nov 6, 2011, at 21:48 , StÃ©phane Ducasse wrote: > http://code.google.com/p/pharo/issues/detail?id=4971 > >> >>> In moose ? because in pharo this is like that and the changes I added where just to make sure that all the clients do not have to deal with timestamp stupid parsing. >>> >> > > > _______________________________________________ > Moose-dev mailing list > Moose-dev(a)iam.unibe.ch > https://www.iam.unibe.ch/mailman/listinfo/moose-dev --- Jannik Laval

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[Pharo-project] FFI wish list: double arrays and friends
by Schwab,Wilhelm K Nov. 13, 2011

Nov. 13, 2011

Sig, Stef is hinting that you are going to have some good news about OpenGL and FFI in general. One area in which I have been fumbling along is arrays of doubles, float, signed and unsigned single and double words. Some of it is redundant and arguably more about making code written for Dolphin happy in Pharo, but the doubles really are missing. Alignment is a concern; I have been lucky. It would be nice to get it right. I (ab)use byte arrays to hold the data, have some accessors that I seldom use (most of the access is, thankfully for speed, through functions in external libraries). Ideally, Pharo would provide a full range of double, float, signed and unsigned single and double and probably quad words with FFI awareness of all of them. Where is all of this going? My GSL interface is scarred by the past lack of support for underscores, and really needs to be rebuilt now that this is no longer a problem. It's even worse with PLplot because their function names are mystifyingly cryptic; Camel Case them and they are *completely* unrecognizable :( Another wrinkle with GSL is that I was unable to load it (as-is) on Linux. At least at the time, there were two libraries (GSL itself and BLAS) that were inter-dependent. A library that uses both would load, but the individual libraries would not open via FFI. I put a bunch of my own code, and some proprietary code, into the library that allows the offenders to load. With license constraints and the joys of GPL, I need to separate these things before a public release. It would be nice to clean all of this stuff at one shot and get first releases of PLplot and GSL bindings for Pharo. Callbacks would provide clean use of the minimizers and solvers in GSL, allowing me to remove a lot of confusing junk that I added to work around the missing features. It should be worth the wait. Bill

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[Pharo-project] Instantiating from a Symbol
by Markus Rother Nov. 13, 2011

Nov. 13, 2011

Hello everybody, I am fairly new to ST and have been following this list since a few weeks. A very brief introduction of myself: I am a 32 year old student of informatics with a degree in political sciences. Currently i am located in Regensburg, Germany. Most of my previous programming was in python, along with some php and javascript. The issue I could not solve on my own is this: I would like to instantiate from symbols. My use-case is a collection of class names which I want to ask to return one instance each. Such that: #Foo asClass new -> a Foo whereas asClass is the method I am looking for. I am using Pharo 1.3. I did not find any description of what I want to achieve on the internet. Many thanks in advance, Markus

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[Pharo-project] FS and binary files
by Johannes Rasche Nov. 12, 2011

Nov. 12, 2011

Hi folks, I just started to using FS instead of FileDirectory. On readStream sent to FSReference a FSAnsiiStream turns out, which is not suitable for reading images ( for instance with PNGReadWriter). What did I wrong? Johannes

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[Pharo-project] deprecation process
by Alain Plantec Nov. 12, 2011

Nov. 12, 2011

Hi all, I'm reviewing some fixes and I was just wondering: Do we have to manually move a deprecated method to the Deprecated14 package or is it done automatically ? Thanks Alain

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Re: [Pharo-project] NewTextMorph
by Fernando Olivero Nov. 12, 2011

Nov. 12, 2011

Done. Issue 4986: Removing NewTextMorph and related Fernando On Thu, Nov 10, 2011 at 3:23 PM, Hilaire Fernandes <hilaire.fernandes(a)gmail.com> wrote: > Fernando, can you do it? I think you know better the related elements. > > Hilaire > > Le 10/11/2011 09:30, StÃ©phane Ducasse a Ã©crit : >> Can you create a bug entry to remove these classes? >> If they are not maintained we should remove them. >> >> Stef >> >> >>> Hi Fernando, >>> >>> Thanks for the feedback. I also saw these classes were not used, so I >>> sticked to TextMorph. >>> >>> >>> Hilaire >>> >>> >>> Le 09/11/2011 10:17, Fernando Olivero a Ã©crit : >>>> Hi Hillary, the classes you mention were created by me when Pharo >>>> wasnt using the CUIS editors, they allowed me to plug them into Pharo, >>>> coming up with a text morph form scratch. >>>> >>>> Nobody used them since them, except me in Gaucho. So i've discontinued >>>> maintaing them in Pharo. I would suggest you to use the other text >>>> morphs classes (TextMorph, PluggableTextMorph, etcâ¦), which are >>>> maintained and used currently in the system. >>>> >>>> I will create an issue to remove them from the system, because now is >>>> confusing, to have more than one option. >>>> >>>> Fernando >>>> >>>> On Sat, Nov 5, 2011 at 4:20 PM, Hilaire Fernandes >>>> <hilaire.fernandes(a)edu.ge.ch> wrote: >>>>> I want to plug a multiple line text morph a DrGeo canvas. The morph >>>>> should display the text (yes) and be editable on place when the user ask >>>>> for. >>>>> >>>>> Which class should I use ? >>>>> EditableTextMorph, EntryFieldMorph or NewTextMorph >>>>> >>>>> >>>>> The comments of the class EntryFieldMorph wrote about example1 and >>>>> example2 methods bit I dont see it (I am using Pharo 1.3) >>>>> >>>>> Hilaire >>>>> >>>>> >>>>> -- >>>>> Education 0.2 -- http://blog.ofset.org/hilaire >>>>> >>>>> >>>>> >>>> >>>> >>> >>> >>> -- >>> Education 0.2 -- http://blog.ofset.org/hilaire >>> >>> >> >> >> > > >

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