September 2013 - Pharo-dev - lists.pharo.org

Re: [Pharo-dev] Naming of Global Session

by Igor Stasenko

On 13 September 2013 17:27, Camillo Bruni <camillobruni(a)gmail.com> wrote: > On 2013-09-13, at 12:09, Chris Cunningham <cunningham.cb(a)gmail.com> wrote: > > so, if this is a class, would Session be an appropriate superclass for a > > WebSession class? or any other type of Session class? > > I would say so. It is as generic as the name suggests. The class is > lightweight > and only contains the time when it was created. > > > That particular > > name would seem to collide with other forms of Sessions, wouldn't it? Or > > is this safely hidden in a Pharo Environment, so it won't collide > elsewhere > > (or entice other developers to try to use it for other Session style > > objects)? > > It is a normal class, thus yes, collision is possible. Again, it can easily > serve as a superclass for other session-like objects. > i doubt it can serve as a basis, because it is not abstract. Its implementation collides just from a beginning , if you need to have multiple session(s) of same kind per connection to some service, because it uses singleton pattern. Take seaside, for example, it uses separate session per each connection. -- Best regards, Igor Stasenko.

Sept. 16, 2013

Understand Icons in Pharo

by kilon

Hello guys I try to hack the help tool and I wanted to add some additional buttons besides "refresh". I would like to add a "previous" , "next" and "up" button. Previous for going to previous page, next for next page and "up" for moving up on the hierarchy of topics and sub topics. In short standard help browsing navigation. I would like also to bind those buttons to keyboard shortcuts (probably arrow keys) to liberate from the use of mouse. The thing is I am not familiar with creating of icons. I think I have seen back and forth buttons in book widget in squeak. I could use those but I would like also to keep open the option of designing my buttons icons. Or maybe use existing ones I can find on the internet. So are there any hints how I can do all that ? -- View this message in context: http://forum.world.st/Understand-Icons-in-Pharo-tp4708501.html Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.

Sept. 16, 2013

Re: [Pharo-dev] Naming of Global Session

by Igor Stasenko

On 13 September 2013 02:06, Camillo Bruni <camillobruni(a)gmail.com> wrote: > Session is a class, not an instance that is a BIG difference. > The same goes for VirtualMachine, OSPlatform, OSEnvironment etc. > These are all classes, but you only work with their instances: > > OSPlatform current == Smalltalk os > VirtualMachine current == Smalltalk vm > OSEnvironment current == Smalltalk os environment > > and thus, it is quite natural to deduce > > Session current == Smalltalk session > > it's all symmetric, not strange objects that have names like classes > but are actually instances. > > That's not the kind of symmetry i would like to see :) It doesn't hurts to have 2 ways to do the same thing (Perl even armed this 'as a good thing' btw), but to my taste there should be only one way, which frees me (as a user) from unnecessary doubts and need to search for vague explanations from system's authors. > > On 2013-09-12, at 20:51, Igor Stasenko <siguctua(a)gmail.com> wrote: > > > Even more, it feels like we introducing another global (so users can > write > > 'Session current' , but why not just 'Session' then?) and so a step > > backwards as to me. > > Because we trying to get rid of all those Display, World, InputSensor , > > ActiveHande etc globals for years. > > > > And last thing: there should be only one way to get current session > object. > > now there's two: > > Smalltalk session > > and > > Session current > > > > and so, users now will inevitably raise the question: what is the right > > 'true' API for accessing it? > > and inevitably we will have two fighting camps, if we leave this thing in > > image and be used in various projects. > > > > > > > -- Best regards, Igor Stasenko.

Sept. 16, 2013

Re: [Pharo-dev] Naming of Global Session

by Igor Stasenko

i would like session to support a cache. something like either: Smalltalk session at: x ifAbsentPut: [ y ] or Smalltalk session cacheAt: x ifAbsentPut: [ y ] On 13 September 2013 17:27, Camillo Bruni <camillobruni(a)gmail.com> wrote: > On 2013-09-13, at 12:09, Chris Cunningham <cunningham.cb(a)gmail.com> wrote: > > so, if this is a class, would Session be an appropriate superclass for a > > WebSession class? or any other type of Session class? > > I would say so. It is as generic as the name suggests. The class is > lightweight > and only contains the time when it was created. > > > That particular > > name would seem to collide with other forms of Sessions, wouldn't it? Or > > is this safely hidden in a Pharo Environment, so it won't collide > elsewhere > > (or entice other developers to try to use it for other Session style > > objects)? > > It is a normal class, thus yes, collision is possible. Again, it can easily > serve as a superclass for other session-like objects. > -- Best regards, Igor Stasenko.

Sept. 16, 2013

Re: [Pharo-dev] Create a Moose model a posteriori

by roberto.minelli＠usi.ch

Hi Guillermo, On Sep 16, 2013, at 9:44 AM, Guillermo Polito <guillermopolito(a)gmail.com> wrote: > Hey! > > On Mon, Sep 16, 2013 at 9:19 AM, roberto.minelli(a)usi.ch <roberto.minelli(a)usi.ch> wrote: > Hi, > > I was at ESUG last week and I discussed about this issue with some people, and in the end Stef told me "drop a mail in the mailing list, I am interested to understand what all the other people think about it". So, here I am. > > I have my project in which I am modeling development sessions. Each session object has a number of meta-data (e.g., start, end time, etc.) and a collection of events. Each event object owns some meta-data and some references to classes that were "touched" by a given event (i.e., now I am using the Ring definition of the classes, since I plan to serialize and deserialize them and I cannot serialize the real class object, it would be too heavy, isn't it?). > > Serializing a class is not a big deal ;). With fuel you can even serialize execution contexts, blocks and stuff. But (but but), I can tell your decision is still good because during development you can end up removing a class, and when that happens the system makes it obsolete and remove all its data. Exactly the problem I run into. > So if you were pointing to the real class, you would have problems to access the class data afterwards. And since you use ring, you're ok ;). > > Cheers, > Guille > > > Now the question: I would like to create a Moose model of a development session to be able to import the sessions in the Moose panel and play around with the excellent Moose tool-suite. How should I proceed? Do you think it's better to annotate and add pragmas to the existing classes or to create a minimal parallel hierarchy of my model (i.e., MooseSession for MySession) and have something like MySession>>#asMooseDef which returns an object of kind MooseSession? Any suggestion on this, Guillermo? > > Thanks in advance, > Roberto >

Sept. 16, 2013

Re: [Pharo-dev] Create a Moose model a posteriori

by Guillermo Polito

Hey! On Mon, Sep 16, 2013 at 9:19 AM, roberto.minelli(a)usi.ch < roberto.minelli(a)usi.ch> wrote: > Hi, > > I was at ESUG last week and I discussed about this issue with some people, > and in the end Stef told me "drop a mail in the mailing list, I am > interested to understand what all the other people think about it". So, > here I am. > > I have my project in which I am modeling development sessions. Each > session object has a number of meta-data (e.g., start, end time, etc.) and > a collection of events. Each event object owns some meta-data and some > references to classes that were "touched" by a given event (i.e., now I am > using the Ring definition of the classes, since I plan to serialize and > deserialize them and I cannot serialize the real class object, it would be > too heavy, isn't it?). > Serializing a class is not a big deal ;). With fuel you can even serialize execution contexts, blocks and stuff. But (but but), I can tell your decision is still good because during development you can end up removing a class, and when that happens the system makes it obsolete and remove all its data. So if you were pointing to the real class, you would have problems to access the class data afterwards. And since you use ring, you're ok ;). Cheers, Guille > > Now the question: I would like to create a Moose model of a development > session to be able to import the sessions in the Moose panel and play > around with the excellent Moose tool-suite. How should I proceed? Do you > think it's better to annotate and add pragmas to the existing classes or to > create a minimal parallel hierarchy of my model (i.e., MooseSession for > MySession) and have something like MySession>>#asMooseDef which returns an > object of kind MooseSession? > > Thanks in advance, > Roberto >

Sept. 16, 2013

Create a Moose model a posteriori

by roberto.minelli＠usi.ch

Hi, I was at ESUG last week and I discussed about this issue with some people, and in the end Stef told me "drop a mail in the mailing list, I am interested to understand what all the other people think about it". So, here I am. I have my project in which I am modeling development sessions. Each session object has a number of meta-data (e.g., start, end time, etc.) and a collection of events. Each event object owns some meta-data and some references to classes that were "touched" by a given event (i.e., now I am using the Ring definition of the classes, since I plan to serialize and deserialize them and I cannot serialize the real class object, it would be too heavy, isn't it?). Now the question: I would like to create a Moose model of a development session to be able to import the sessions in the Moose panel and play around with the excellent Moose tool-suite. How should I proceed? Do you think it's better to annotate and add pragmas to the existing classes or to create a minimal parallel hierarchy of my model (i.e., MooseSession for MySession) and have something like MySession>>#asMooseDef which returns an object of kind MooseSession? Thanks in advance, Roberto

Sept. 16, 2013

WhatsUp from: 2013-09-16 until: 2013-09-30

by seaside＠rmod.lille.inria.fr

Hi! We're sending this automatic email twice a month, to give the community an opportunity to easily know what's happening and to coordinate efforts. Just answer informally, and feel free to spawn discussions thereafter! ### Here's what I've been up to since the last WhatsUp: - $HEROIC_ACHIEVEMENTS_OR_DISMAL_FAILURES_OR_SIMPLE_BORING_NECESSARY_TASKS ### What's next, until 2013-09-30 (*): - $NEXT_STEPS_TOWARDS_WORLD_DOMINATION (*) we'll be expecting results by then ;)

Sept. 16, 2013

Re: [Pharo-dev] [NativeBoost] Can't load function on OS X 10.8.5

by StÃ©phane Ducasse

Hi Joachim > Joachim Geidel wrote >> The following expression answers nil: >> >> NativeBoost >> loadFunction: 'JNI_CreateJavaVM_Impl' >> from: >> '/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Libraries/libclient.dylib' > > My fault! I should have used NativeBoost class>>loadSymbol:fromModule:. The > two methods have no comment, sad sad sad could you add comments and add a bug entry. I'm sorry about it. > and it took a while until I found the comment > in Object>>nbGetSymbolAddress:module: which explains that > #loadSymbol:fromModule: uses the OS specific symbol lookup, while > loadFunction:from: searches for functions of VM plugins. > > Best regards, > Joachim Geidel > > > > -- > View this message in context: http://forum.world.st/NativeBoost-Can-t-load-function-on-OS-X-10-8-5-tp4708… > Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com. >

Sept. 15, 2013

Re: [Pharo-dev] [NativeBoost] Can't load function on OS X 10.8.5

by Joachim Geidel

Joachim Geidel wrote > The following expression answers nil: > > NativeBoost > loadFunction: 'JNI_CreateJavaVM_Impl' > from: > '/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Libraries/libclient.dylib' My fault! I should have used NativeBoost class>>loadSymbol:fromModule:. The two methods have no comment, and it took a while until I found the comment in Object>>nbGetSymbolAddress:module: which explains that #loadSymbol:fromModule: uses the OS specific symbol lookup, while loadFunction:from: searches for functions of VM plugins. Best regards, Joachim Geidel -- View this message in context: http://forum.world.st/NativeBoost-Can-t-load-function-on-OS-X-10-8-5-tp4708… Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.

Sept. 15, 2013