January 2015 - Pharo-dev - lists.pharo.org

[pharo-project/pharo-core]

by GitHub

Branch: refs/tags/40435 Home: https://github.com/pharo-project/pharo-core

Jan. 8, 2015

[pharo-project/pharo-core] 99a09b: 40435

by GitHub

Branch: refs/heads/4.0 Home: https://github.com/pharo-project/pharo-core Commit: 99a09b30db31fdecbd0a0fb38b93803191330e84 https://github.com/pharo-project/pharo-core/commit/99a09b30db31fdecbd0a0fb3… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2015-01-08 (Thu, 08 Jan 2015) Changed paths: M Nautilus.package/AbstractNautilusUI.class/instance/source code area/defaultClassDescriptor.st M Nautilus.package/PackageTreeNautilusUI.class/instance/source code area/defaultClassDescriptor.st A ScriptLoader40.package/ScriptLoader.class/instance/pharo - scripts/script435.st A ScriptLoader40.package/ScriptLoader.class/instance/pharo - updates/update40435.st M ScriptLoader40.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st Log Message: ----------- 40435 14686 defaultClassDescriptor should print slot class definition when the setting is on https://pharo.fogbugz.com/f/cases/14686 http://files.pharo.org/image/40/40435.zip

Jan. 8, 2015

Re: [Pharo-dev] Athens/Morphic

by Nicolai Hess

2015-01-08 16:16 GMT+01:00 stepharo <stepharo(a)free.fr>: > Hi nicolai > > should we include your change in Pharo4.0? > No, not all, not yet! To many open questions, to many things I did by trial-and error. I just hope someone is looking at this. And help with the missing/not working things. (TransformMorphs, TextMorphs ) Or telling me all this is not needed because no one will care on morphic, because all is done with bloc/brick/txtext or whatever. > > Stef > Le 8/1/15 12:27, Nicolai Hess a Ã©crit : > > A new Version of the AthensWrapWorldMorph (useful for testing Athens based >> drawing for morphs). And some changes for using Athens with the existing >> Morphs: >> >> Many things are working, some important not. >> I had some terrible, terrible hours fighting with clipping, >> MorphTransformation and Textrendering. >> >> MorphTreeTransform still doesn't work. >> >> Textrendering: >> I solved by using some of >> AthensText-classes. Those aren't fully working. >> Tabs or similiar control characters don't work. >> Text emphasis doesn't work. >> Different fonts and different colors in one TextMorph is working now! >> And I still don't know if this is the right way and I did not get any >> review/feedback on this (issue 13449). >> (In the meantime we have similiar TxTextModel based classes in the image, >> maybe I am wasting my time). >> >> I had to make one change for creating a pattern paint >> from a form: AthensCairoSurface>>#fromForm: >> I am not sure about this change, but image fillstyle with 1 pixel height >> didn't work, >> but now they do (for example, change to vistary or watery theme, they >> make some heavy use on fillstyles, and it works now with athens). >> >> >> athens_wrap_world.cs is a new AthensWrapWorldMorph for testing >> Athens rendering, every Morph put on this WrapWorld will be drawn >> by athens. >> >> athens_morphic_support.cs and athens_morphic_textsupports.cs >> add/fix athens related methods. >> >> athens_morphic_drawonathens.cs defines some more drawOnAthensCanvas: >> methods. >> >> >> >> >

Jan. 8, 2015

Re: [Pharo-dev] The Smalltalk Revolution

by Atlas

Great Job on the article! I am glad to have found a vibrant and ambitious community. Before I go into details, I have to mention that I am new to the system, so I am sorry, if I am missing anything or sound pretentious and I'd be happy to be corrected. (Brace yourselves, a wall of text is coming!) A Brief Note on the State of the Art You mentioned the very important issue of "offloading cognitive burden" which deserves in-depth discussion. Before I go into details, I have to mention that I am new to the system, so I am sorry, if I am missing anything or sound pretentious and I'd be happy to be corrected. In your article you write that: *"There is virtually no cognitive load on your brain!"* While this is a highly idealized statement about Smalltalk (I'll elaborate on that), you have my opinion identified the *ultimate goal* of any development environment. I believe that Pharo is an ideal candidate to get us closer but there is much work to be done. I have to agree with Phil that "we need to provide easier entry into the system" and I'd like to extend this statement: we need an easier entry point to *every aspect* of the system. (I use the terms systems, environment and applications interchangeably). I really like the live programming workflow, the code editor and class browser but there are hundreds of classes and even more methods and it is not obvious how to perform more complex tasks (such as GUI building). While the liveliness and uniformity of the design allows exploring all corners of the running system (which really is great and a huge leap forward compared to almost all systems), it is very easy to get lost and buried in class browser windows and additional documentation. Often I forget what I was actually trying to do: the size of (my) short term memory is too limited to keep track of all the things I found out, am still trying to find out, things not working, things partly assembled and so on. Packages, Protocols and Categories are simply not enough to structure complex systems consisting of myriads of interacting objects. Suggestions A Hypermedia System for Smalltalk/Pharo What we need *is to distill the knowledge and procedures *required to perform specific tasks into the environment itself. I imagine a hypermedia system which helps me to organize my objects and to learn new things. Douglas Engelbart's conceptual framework for agumenting human intellect provides a huge source of ideas [5]. For example, it would be great to have the "Pharo by Example" book be represented in such a system. It could be a mindmap reflecting the chapter structures, some nodes might link to objects or methods that can be used directly to combine new objects. For example, by invoking a hypermedia search, I might search for "draw morph" and I might see a mindmap reflecting Chapter 11.4 "Creating and drawing your own morphs" with all artifacts needed to assemble a particular morph in the environment. It would be also great to be able to use objects as search patterns instead of strings only. Also I think it would greatly /ameliorate the problem/ of documentation: When constructing a new system or improving an old one, there is always a learning process involved. During this process, one organizes material, does research, experiments and so on. If all these steps where directly transferred into the hypermedia system, documentation comes almost for free. Other people trying to understand the system, learning new things, could enrich the already existing structures. I think Chimera [2] is a great example of such a system. More Directness I think it would be very beneficial if we also *incorporated the Look and Feel of the Self System *[1] to allow for quick prototyping and more direct interaction. This way, I could simply drag a "onDraw:" method from the handbook onto the live morph I am viewing. Also, I'd like see the references of an object in a changeable graph structure. The inspector is certainly a great tool, but compared to Self it sometimes feels clumsy. The only issue is that Self is prototype based, so there is always one layer of indirection, but it could be hidden by modifying the class when dragging an method into an object. (If this already has been done, then it should be standard environment!). Data-Flow Programming Messages that change state (as opposed to pure computations) and dynamic dispatch mechanisms are heavily used in OO systems and, unfortunately, no exception to Smalltalk. They add a lot of cognitive burden and writing event handlers, patching them together, having *invisible* message flow is certainly very taxing. Although ideas from functional (reactive) programming, to relieve some of the burden, have found its way into OO systems and languages such as Scala [3], I think there are other, more direct ways to deal with reactivity and side-effects that should be explored. Using the hypermedia kernel, events and pure computations could be linked to attributes to facilitate flow-based programming. Although only networks with a fixed topology can be effectively modeled this way, I assume that most parts of, for instance GUI systems, could be made more self-explanatory. Wouldn't it be nice to visually connect a button event to a method? Or a label to a clock? Workable examples could be of course, reachable in the hypermedia system. Memory as a First Class Citizen Further ideas are to make *memory a first class citizen*: I think that memory should be, just as an object, part of the hypermedia system, or a hypermedia system itself. Since it represents the state of the system, it should be self-explanatory. Tradtionally, memory is allocated in indivisible, incomprehensible and (inaccessible) lumps to processes. However, I think memory should not only contain data but also interpretable metadata about the contents of its cells and relationships. >From a Smalltalk viewpoint, I imagine that every attribute of an object is visibly connected to a memory location with a name (and further metadata). This way, computations running in different processes or runtime environments could simply connect to the memory, consume data and write it back. This would also make it easy to have true *heterogeneous flow-based programming*. (Conversions between data types could be just plugged in between). Ideally, Smalltalk takes the place of current operating systems (such as SqueakNOS), running the hypermedia kernel and providing access to the *conceptual* memory. Languages such as C, C++ or Haskell could then be used to implement /pure computations/ and they could be attached to memory cells, waiting for input. Also, security policies can be expressed in a uniform way. There is also a firm theoretical foundation (the Ambient Calculus) which can be used to express hairy details about security policies. Ultimately, I think it would greatly benefit interoperability. There is also a huge potential benefit to testing: One simply has to identify the input network of the memory, and record a subset or all of the patterns occurring in the other part of the system. Then, by replaying the input, one can compare the resulting pattern with the record. Also, undo operations could be performed by changing cell values back to their recorded images. Smalltalk everywhere I imagine that every part of the computer contained such a Smalltalk hypermedia system describing the objects and relations in its memory contents. This would make it easy to browse, visualize and manipulate computer components, network infrastructure, anything really. With the vast improvement of computer hardware, in particular programmable logic, having a Smalltalk interpreter on almost every device seems quite feasible to me. The future of Smalltalk is indeed grand! (I hope I have not got delusional at this point). Atlas Project I have started working on a prototype, I am anxious to test some of the ideas I proposed. There is much uncharted territory and Pharo seems to be a great platform and vehicle to explore new ideas. Are there people willing to contribute, help? What are your opinions? [1] http://www.selflanguage.org/ [2] https://www.ics.uci.edu/~taylor/ics228/chimera.pdf [3] http://scg.unibe.ch/archive/papers/Reng09bLanguageShootout.pdf [4] http://infoscience.epfl.ch/record/176887/files/DeprecatingObservers2012.pdf [5] http://www.dougengelbart.org/pubs/augment-3906.html -- View this message in context: http://forum.world.st/The-Smalltalk-Revolution-tp4798320p4798412.html Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.

Jan. 8, 2015

Re: [Pharo-dev] The Smalltalk Revolution

by horrido

We're getting a spirited debate at Reddit <http://www.reddit.com/r/programming/comments/2rquwv/the_smalltalk_revolutio…> . Perhaps someone can respond to BigPeteB's complaint: "Uh, except that every other computing system in common use is file-based. When I worked in Squeak, the only way to share code was to export objects to file (tricky, since there's no way to guarantee that you got all of the prerequisites you might need) or share your entire 50MB code image. How exactly is either of those supposed to work in a modern development environment?" -- View this message in context: http://forum.world.st/The-Smalltalk-Revolution-tp4798320p4798407.html Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.

Jan. 8, 2015

Re: [Pharo-dev] [ OT ] Je suis Charlie

by phil＠highoctane.be

Well, if we look at facts: http://reason.com/blog/2014/06/12/obama-the-world-is-less-violent-than-it Check some numbers: http://en.wikipedia.org/wiki/Mass_killings_under_Communist_regimes http://www.scaruffi.com/politics/dictat.html It makes it even more unbearable. Phil On Thu, Jan 8, 2015 at 5:16 PM, Clara Allende <clari.allende(a)gmail.com> wrote: > A couple of days ago, a French guy here in Buenos Aires was telling me > that France is not how it used to be, that a lot of violence is going on... > And I was refusing to believe him, given such a wonderful and warming > experience living in Lille. And then, this... But it is not just France, > it's > over the world, we live among a lot of violence and intolerance, and we > forget that all in all we are all people. > Or ar least, some tiny groups of people forget, and live in the belief > that they have the right to decide who deserves to live or not. > But as one of our presidents wrote (yes, in French): On ne tue pas les > idÃ©es. > > Trop triste. Je suis bouleversÃ©e. Toutes mes pensÃ©es vont aux amis en > France. > On est tous Charlie. > > > 2015-01-08 13:02 GMT-03:00 <jdelgado(a)lsi.upc.edu>: > >> Also, condolences from Barcelona. No words to describe the horror. We all >> are Charlie. >> >> Bests, >> >> Jordi >> >> > Our condolences from Greece, very sad day for mankind and freedom of >> > speech. Any form of fanatism can only damage and unfortunately we have >> > witnessed its worst form yesterday. >> > >> > On Thu, Jan 8, 2015 at 5:14 PM, stepharo <stepharo(a)free.fr> wrote: >> > >> >> Extremely sad. I cried. When you see the violence with which the guy >> >> kills the policeman lying on the floor, >> >> you can vomit. >> >> I cannot imagine the violence in the building. Imagine killing 80 year >> >> old >> >> men like Wolinsky with a kalashnikov. >> >> These comics were really fun I often laugh a lot because they jokes all >> >> powers. >> >> >> >> Stef >> >> >> >> >> >> Le 8/1/15 09:46, Sven Van Caekenberghe a Ã©crit : >> >> >> >> I am shocked by yesterday's events in Paris. >> >> >> >> http://en.wikipedia.org/wiki/Charlie_Hebdo_shooting >> >> >> >> Freedom of speech, including satire, is a fundamental right. >> >> >> >> >> >> I am sure that LibertÃ©, Ã©galitÃ©, fraternitÃ© will prevail. >> >> >> >> >> >> The way we work together in our little community, building and >> >> supporting free & open source software as a way to contribute to >> >> society, >> >> with diverse people from all over the world respecting each other, is >> >> one >> >> example of what humans can do. I am proud of that. >> >> >> >> >> >> Sven >> >> >> >> >> >> >> > >> > >

Jan. 8, 2015

Re: [Pharo-dev] [ OT ] Je suis Charlie

by Clara Allende

---------- Forwarded message ---------- From: Clara Allende <clari.allende(a)gmail.com> Date: 2015-01-08 13:16 GMT-03:00 Subject: Re: [Pharo-dev] [ OT ] Je suis Charlie To: Pharo Development List <pharo-dev(a)lists.pharo.org> A couple of days ago, a French guy here in Buenos Aires was telling me that France is not how it used to be, that a lot of violence is going on... And I was refusing to believe him, given such a wonderful and warming experience living in Lille. And then, this... But it is not just France, it's over the world, we live among a lot of violence and intolerance, and we forget that all in all we are all people. Or ar least, some tiny groups of people forget, and live in the belief that they have the right to decide who deserves to live or not. But as one of our presidents wrote (yes, in French) -- because, as I'm gently reminded, he was quoting Voltaire -- : On ne tue pas les idÃ©es. Trop triste. Je suis bouleversÃ©e. Toutes mes pensÃ©es vont aux amis en France. On est tous Charlie. 2015-01-08 13:02 GMT-03:00 <jdelgado(a)lsi.upc.edu>: Also, condolences from Barcelona. No words to describe the horror. We all > are Charlie. > > Bests, > > Jordi > > > Our condolences from Greece, very sad day for mankind and freedom of > > speech. Any form of fanatism can only damage and unfortunately we have > > witnessed its worst form yesterday. > > > > On Thu, Jan 8, 2015 at 5:14 PM, stepharo <stepharo(a)free.fr> wrote: > > > >> Extremely sad. I cried. When you see the violence with which the guy > >> kills the policeman lying on the floor, > >> you can vomit. > >> I cannot imagine the violence in the building. Imagine killing 80 year > >> old > >> men like Wolinsky with a kalashnikov. > >> These comics were really fun I often laugh a lot because they jokes all > >> powers. > >> > >> Stef > >> > >> > >> Le 8/1/15 09:46, Sven Van Caekenberghe a Ã©crit : > >> > >> I am shocked by yesterday's events in Paris. > >> > >> http://en.wikipedia.org/wiki/Charlie_Hebdo_shooting > >> > >> Freedom of speech, including satire, is a fundamental right. > >> > >> > >> I am sure that LibertÃ©, Ã©galitÃ©, fraternitÃ© will prevail. > >> > >> > >> The way we work together in our little community, building and > >> supporting free & open source software as a way to contribute to > >> society, > >> with diverse people from all over the world respecting each other, is > >> one > >> example of what humans can do. I am proud of that. > >> > >> > >> Sven > >> > >> > >> > > >

Jan. 8, 2015

Re: [Pharo-dev] [ OT ] Je suis Charlie

by Clara Allende

A couple of days ago, a French guy here in Buenos Aires was telling me that France is not how it used to be, that a lot of violence is going on... And I was refusing to believe him, given such a wonderful and warming experience living in Lille. And then, this... But it is not just France, it's over the world, we live among a lot of violence and intolerance, and we forget that all in all we are all people. Or ar least, some tiny groups of people forget, and live in the belief that they have the right to decide who deserves to live or not. But as one of our presidents wrote (yes, in French): On ne tue pas les idÃ©es. Trop triste. Je suis bouleversÃ©e. Toutes mes pensÃ©es vont aux amis en France. On est tous Charlie. 2015-01-08 13:02 GMT-03:00 <jdelgado(a)lsi.upc.edu>: > Also, condolences from Barcelona. No words to describe the horror. We all > are Charlie. > > Bests, > > Jordi > > > Our condolences from Greece, very sad day for mankind and freedom of > > speech. Any form of fanatism can only damage and unfortunately we have > > witnessed its worst form yesterday. > > > > On Thu, Jan 8, 2015 at 5:14 PM, stepharo <stepharo(a)free.fr> wrote: > > > >> Extremely sad. I cried. When you see the violence with which the guy > >> kills the policeman lying on the floor, > >> you can vomit. > >> I cannot imagine the violence in the building. Imagine killing 80 year > >> old > >> men like Wolinsky with a kalashnikov. > >> These comics were really fun I often laugh a lot because they jokes all > >> powers. > >> > >> Stef > >> > >> > >> Le 8/1/15 09:46, Sven Van Caekenberghe a Ã©crit : > >> > >> I am shocked by yesterday's events in Paris. > >> > >> http://en.wikipedia.org/wiki/Charlie_Hebdo_shooting > >> > >> Freedom of speech, including satire, is a fundamental right. > >> > >> > >> I am sure that LibertÃ©, Ã©galitÃ©, fraternitÃ© will prevail. > >> > >> > >> The way we work together in our little community, building and > >> supporting free & open source software as a way to contribute to > >> society, > >> with diverse people from all over the world respecting each other, is > >> one > >> example of what humans can do. I am proud of that. > >> > >> > >> Sven > >> > >> > >> > > >

Jan. 8, 2015

Re: [Pharo-dev] [ OT ] Je suis Charlie

by jdelgado＠lsi.upc.edu

Also, condolences from Barcelona. No words to describe the horror. We all are Charlie. Bests, Jordi > Our condolences from Greece, very sad day for mankind and freedom of > speech. Any form of fanatism can only damage and unfortunately we have > witnessed its worst form yesterday. > > On Thu, Jan 8, 2015 at 5:14 PM, stepharo <stepharo(a)free.fr> wrote: > >> Extremely sad. I cried. When you see the violence with which the guy >> kills the policeman lying on the floor, >> you can vomit. >> I cannot imagine the violence in the building. Imagine killing 80 year >> old >> men like Wolinsky with a kalashnikov. >> These comics were really fun I often laugh a lot because they jokes all >> powers. >> >> Stef >> >> >> Le 8/1/15 09:46, Sven Van Caekenberghe a ÃÂ©crit : >> >> I am shocked by yesterday's events in Paris. >> >> http://en.wikipedia.org/wiki/Charlie_Hebdo_shooting >> >> Freedom of speech, including satire, is a fundamental right. >> >> >> I am sure that LibertÃÂ©, ÃÂ©galitÃÂ©, fraternitÃÂ© will prevail. >> >> >> The way we work together in our little community, building and >> supporting free & open source software as a way to contribute to >> society, >> with diverse people from all over the world respecting each other, is >> one >> example of what humans can do. I am proud of that. >> >> >> Sven >> >> >> >

Jan. 8, 2015

Re: [Pharo-dev] Essay Topics

by horrido

Our first essay (in response to Topic #2)! http://smalltalkrenaissance.wordpress.com/2015/01/06/smalltalk-in-business-… <http://smalltalkrenaissance.wordpress.com/2015/01/06/smalltalk-in-business-…> Please step up. We need more. Thanks. horrido wrote > As promised, here is my first list of essay topics. I would like to ask > you to submit an essay on one of these topics. Multiple submissions are > welcome; if they're good, they will all get published at Smalltalk > Renaissance. > > I will edit the articles for grammar and style. You should look good after > I'm done. > > There's no deadline, but obviously the sooner you can write them, the > better. SRP is a fast-moving campaign. > > If you have other suggestions for essay topics, please let me know. > > Without further ado, here are the topics... > > > Topic #1: > > How do modern IDEs, such as Eclipse and IntelliJ and Visual Studio, > compare with the tried-and-true Smalltalk development environment? > > ----- > Topic #2: > > It is the contention of some critics, including > Robert Martin <https://www.youtube.com/watch?v=YX3iRjKj7C0> > , that Smalltalk did not (does not?) address the needs of the enterprise. > Present a counter-argument. > > Explain how Smalltalk can assist the enterprise in team development, in > large-scale development, and in integrating with existing (typically > Windows-based) infrastructures. > > Pay particular attention to the question of RDBMS usage, which is often > critical in the enterprise. > > ----- > Topic #3: > > Some critics complain that Smalltalk does not play well with existing > file-based tooling. / > Duh! / > Smalltalk is a "new" approach to IDEs and software engineering. We should > be advancing this paradigm with new tooling, rather than falling back on > the old again and again. Otherwise, things will never change for the > better. > > Make a case for why we should embrace this change now, rather than waiting > (for what?). > > Also, this > webpage <http://thoughtstorms.info/view/smalltalkunix/view/smalltalk> > poses an interesting argument against Smalltalk. Perhaps someone can > tackle it. > > ----- > Topic #4: > > In the age of multi-core processors and concurrency programming, how is > Smalltalk addressing the concerns of developers? > > ----- > Topic #5: > > How should we address the issue of compatibility (ie, fragmentation) among > various implementations of Smalltalk? Does this issue hamper the creation > of an ecosystem of libraries and shared code? -- View this message in context: http://forum.world.st/Essay-Topics-tp4797847p4798374.html Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.

Jan. 8, 2015