April 2015 - Pharo-users - lists.pharo.org

[Ann] MorphicDraw

by Stephan Eggermont

To better understand Morphic, I've started writing a small application that can draw shapes and connect them. A pdf documenting what I've done is at https://github.com/StephanEggermont/MorphicDraw Code is on smalltalkhub, StephanEggermont/MorphicDraw Suggestions, fixes and improvements are welcome Stephan

April 29, 2015

Re: [Pharo-users] class initialization and class-side variables

by Ben Coman

On Thu, Apr 30, 2015 at 12:51 AM, Thierry Goubier <thierry.goubier(a)gmail.com > wrote: > Le 29/04/2015 16:01, Ben Coman a Ã©crit : > >> >> >> So it seems that creating a new class does not call #initialize at all, >> let alone an inherited one. It is a Monticello behaviour. >> > > I'm nearly certain all other ways of loading smalltalk code in the image > behave like that; MC only reproduces an older convention. > Thanks Thierry. Then what I meant was that calling the class-side #initialize seems not part of the class creation code. I infer that those other ways of loading code must also themselves implement the behaviour the call #initialize after the class is loaded. cheers -ben

April 29, 2015

Re: [Pharo-users] Question about Text Editor.

by Mariano Martinez Peck

Not a text editor, but there was a ScriptManager that was kind of a worksapce with ability to give scripts a name, save them, and then easily browse and execute them. But this is a bit old, so not sure if this still works in Pharo 4.0: http://pharo.gemtalksystems.com/book/PharoTools/Script-Manager/ On Mon, Apr 27, 2015 at 7:36 AM, Cyril Ferlicot <cyril.ferlicot(a)gmail.com> wrote: > Hi, > I wanted to do a little text editor and I would like to know if > someone already did one with simple features like open a file, save a > file etc... > I don't want to lose too much time in something that already exist. > > -- > Cheers > Cyril Ferlicot > > -- Mariano http://marianopeck.wordpress.com

April 29, 2015

Questions about MetaLink

by Glenn CavarlÃ©

Hi, I'm playing with Slots and MethodWrappers to customize instVar reading/writing and method calls. In my experiments, Slots and MethodWrappers hold meta-description objects used at runtime to apply some filters, validations and to compose or delegate methods behavior. I'm really interested in the progress of MetaLink, I saw that it will be possible to use hooks like #instead or #arround. Are these hooks can replace the use of MethodWappers ? Will it be possible to call a MetaObject's method instead of a method's body and with the passed arguments ? The announcement of meta-levels gives me ideas, would not it be interesting to have something like meta-layers? For instance, in order to address a layer with no MetaObjects execution, a layer with MetaObjects for logging or breakpoints, an other layer with custom MetaObjects, etc. I don't see how it would be possible to limit the scope of the active layers configuration, just for a block evaluation for exemple... From RFMetaContext maybe, but how ?... It is just an idea on the fly, Maybe it's already possible to do something like that or it would be just useless in practice. Thanks a lot Marcus for your work on Slot and MetaLink. Best regards, Glenn. ----- Glenn CavarlÃ© -- View this message in context: http://forum.world.st/Questions-about-MetaLink-tp4823035.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

April 29, 2015

Oracle FFI - External module not found on OS X

by recursive68＠gmail.com

I found to working solutions which fix issue, also doesn't require symlink in Plugins directory: 1) create plist file in /Library/LaunchAgents which sets library path and Oracle home or 2) create apple script that sets environment variables and run a user login

April 29, 2015

Re: [Pharo-users] Question about Text Editor.

by Nicolai Hess

2015-04-27 12:36 GMT+02:00 Cyril Ferlicot <cyril.ferlicot(a)gmail.com>: > Hi, > I wanted to do a little text editor and I would like to know if > someone already did one with simple features like open a file, save a > file etc... > I don't want to lose too much time in something that already exist. > None that I know of. > > -- > Cheers > Cyril Ferlicot > >

April 29, 2015

Re: [Pharo-users] VoyageMongo and Aggregate functions

by phil＠highoctane.be

Doable in MongoTalk. I posted an example a while ago. Phil Le 29 avr. 2015 18:09, "Tommaso Dal Sasso" <tommaso.dalsasso(a)gmail.com> a Ã©crit : > Hi, > > I am using VoyageMongo to store some data in a mongo database, and I am > trying to use some aggregate functions or map/reduce approach, as shown > on http://docs.mongodb.org/manual/aggregation/. > > Is it possible to do it in Voyage, even by directly calling the > MongoTalk objects? I am interested in this because it is much more > efficient than loading all the data in the pharo image and selecting it > afterwards. > > Thanks, > Tommaso (and Roberto) > > >

April 29, 2015

Reading rows in a database table (select * from ...)

by Sanjay Minni

Hi what is the usual practice in reading in rows from a database table - is a loop usually written to read next n rows / till the end - does the arriving data have to be processed like a dictionary into a collection where each object corresponds to a row and each key/value into the objects methods corresponding to columns e.g in NBSQLite3 interface test I find the command below used, looks like I need to process row by row rs := db execute: 'select * from x'. row := rs next. ... := row at: <key> ... rs close (I will be using Sqlite, Postgresv2 and ODBC drivers ... 3 separate projects) regards Sanjay ----- --- Regards, Sanjay -- View this message in context: http://forum.world.st/Reading-rows-in-a-database-table-select-from-tp482300… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

April 29, 2015

Re: [Pharo-users] class initialization and class-side variables

by Thierry Goubier

Le 29/04/2015 16:01, Ben Coman a Ã©crit : > > > So it seems that creating a new class does not call #initialize at all, > let alone an inherited one. It is a Monticello behaviour. I'm nearly certain all other ways of loading smalltalk code in the image behave like that; MC only reproduces an older convention. Thierry

April 29, 2015

Re: [Pharo-users] Understanding Slices

by Thierry Goubier

Le 29/04/2015 15:17, Ben Coman a Ã©crit : > Someone correct me - any package can have a dependent package added. > We just don't do that (I've never seen it my past couple of years > with Pharo). You're right. We do have packages with dependencies floating in places, with dedicated handling for things like filetree (and gitfiletree, where it has a special way to interact with git). The problem is that MC is very strict with dependencies; it is one of the very few code paths where MC check not only the version number and author of a package, but also it's UUID. > A Slice is simply an empty package that has dependencies. Now it > seems somewhat tied to development of the Pharo image since it > requires an issue number - but I guess you could use it for other > purposes with any random issue number or 00000. cheers -ben I guess yes. But just make sure you don't save it in Pharo inbox ;) Thierry > > On Wed, Apr 29, 2015 at 8:18 PM, Sean P. DeNigris > <sean(a)clipperadams.com <mailto:sean@clipperadams.com>> wrote: > > Sergio Fedi wrote >> Are Slices a way to represent a change accross packages? > > Exactly. In the MC browser, there is a button to create a slice from > an issue number. During that workflow, you will be asked to select > all relevant packages. When the slice is committed or loaded, it > will bring all of those packages with it. > > > > ----- Cheers, Sean -- View this message in context: > http://forum.world.st/Understanding-Slices-tp4822860p4822867.html > Sent from the Pharo Smalltalk Users mailing list archive at > Nabble.com. > >

April 29, 2015