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

Seeking help on morphs : expander and scrolls
by Jigyasa Grover July 20, 2015

July 20, 2015

Hi I am using Expander Morphs to display some search results. I am finding it hard to insert a scroll bar in text displayed after expanding the title of the search result. The corresponding code snippet is as: *dialog newRow: {* *(* * (* * dialog newExpander: r title asString* * forAll: { dialog newText: r content asString . }* * )minWidth:600; minHeight: 10* *)cellInset: 0;* * borderStyle: (BorderStyle inset baseColor: dialog paneColor; width: 1)* * } * I basically need to add a scroll-able content in '*newText*:' portion. The entire code of my application an offline text search application namely searchQuick is available at github (https://github.com/jig08/sQuick_new) . You all are welcome to fork the code , try the infancy application and send in suggestions. Help Appreciated. Regards Jigyasa

2 3

Fwd: Quick Silver: How to solve DeepActionStrategy as a dependency for running QuickSilver?
by Offray Vladimir Luna CÃ¡rdenas July 20, 2015

July 20, 2015

Sorry, writing again from the wrong mailing list. Here comes again. -------- Forwarded Message -------- Subject: Quick Silver: How to solve DeepActionStrategy as a dependency for running QuickSilver? Date: Sun, 19 Jul 2015 19:34:18 -0500 From: Offray Vladimir Luna CÃ¡rdenas <offray.luna(a)mutabit.com> To: pharo-users(a)lists.pharo.org Hi, I'm trying to load Quick Silver following the instructions from http://scg.unibe.ch/research/quicksilver and I get this warning message: ~~~~~ This package depends on the following classes: DeepActionStrategy You must resolve these dependencies before you will be able to load these definitions: MalGraphBuilderStrategy executeOnObject: executeOnRelationFrom:to: graph graph: initialize ~~~~~ So I searched for Deep ActionStrategy and the closer thing I got was http://www.humane-assessment.com/blog/traversal-enabled-pharo-objects/, but anyway installing DeepTraverser don't solve the warning. There is any updated procedure to install Quick Silver and load its configuration without having this issue? Thanks, Offray

1 0

PharoJS
by Torsten Bergmann July 19, 2015

July 19, 2015

ClÃ©ment Bera wrote: >What is PharoJS ? Are you talking about Pharo on top of the Bert's SqueakJS VM ? >If so, it starts, but some primitives fail making it freeze after a short >while as you describe. >It would be fun to have it running even though most of the Pharo folks went >into the Amber direction for Pharo on Javascript. Yes there is SqueakJS from Bert https://bertfreudenberg.github.io/SqueakJS/ and I would have expected "PharoJS" to be the same for Pharo. At least I would "reserve" the name for the case Pharo images work on it as well. Unfortunately Noury Bouraqadi now took this "PharoJS" name for his Pharo -> JavaScript compiler http://car.mines-douai.fr/2015/07/develop-in-pharo-run-on-javascript/ leading a little bit to this confusion. I would have called the project "Pharo JavaScriptBridge" like the config and the repo http://smalltalkhub.com/#!/~noury/JavaScriptBridge I loaded the config from the SmalltalkHub repo and then: ConfigurationOfJavaScriptBridge loadBleedingEdge tried JbClientControllerBridge startOn:80 but were hit by several errors. In my opinion a minimal HOWTO would be required. Thanks Torsten

5 11

GitFileTree browsing changes doesn't work in Pharo 5
by Peter UhnÃ¡k July 19, 2015

July 19, 2015

Hi, when I wanted to see package changes in Pharo 5 (with GitFileTree from MetaRepoFor5.0 / loadDevelopment) it died on MCMczReader class>>canReadFileNamed: fileName because "fileName" is actually instance of GitFileTreePackageEntry is it broken, or did I break something? Thanks, Peter

2 7

thank you
by Tudor Girba July 18, 2015

July 18, 2015

Hi, GT captured the spotlight again at ESUG: http://www.humane-assessment.com/blog/gtspotter-1st-prize-esug2015 [image: Inline image 1] We, the Glamorous Team, would like to thank the community for the trust and for the support. We assure you that we do not take this for granted. We started on an ambitious project of rethinking the IDE from the ground up. We started with GTInspector and showed how object inspection can be a great deal more than the state-of-the-art offers. Now we redefined searching for objects. These are great milestones, but the road ahead is still long and challenging. While the Glamorous Team is at the forefront, we cannot do it alone. We need you to work with us and show the world that we can reinvent what was started decades ago in Smalltalk. Only this time weâll make it happen in Pharo. Thank you, The Glamorous Team

1 0

Fwd: Phratch: System/World Menu instead of phratch menu
by Offray Vladimir Luna CÃ¡rdenas July 17, 2015

July 17, 2015

He he, sorry sending from the wrong mail address, here comes again. -------- Forwarded Message -------- Subject: Phratch: System/World Menu instead of phratch menu Date: Wed, 15 Jul 2015 10:35:37 -0500 From: Offray Vladimir Luna CÃ¡rdenas <offray.luna(a)mutabit.com> To: pharo-users(a)lists.pharo.org Hi, Some of my students are having a problem. For some reason the pharo world/system menu appears and we don't know how to disable it and go back to the phratch menu, so we can't use "Save as" and other options to save/export projects. How to get back the default behaviour for Phratch menus? Thanks, Offray

2 2

Re: [Pharo-users] Pharo-users Digest, Vol 27, Issue 62
by Andy Burnett July 17, 2015

July 17, 2015

The main thing I am wondering about is how to build portable interfaces. My ideal situation would be to use something like Spec to prototype within Pharo, and then generate something similar in JS. Alternatively, perhaps we could create mock objects for something like jquery-ui. Noury, have you done any experiments with this? Cheers Andy

2 1

The Esug videos have started arriving
by Stephan Eggermont July 17, 2015

July 17, 2015

https://www.youtube.com/user/esugboard/videos

1 0

How to correctly boost performances with Nativeboost ?
by Matthieu Lacaton July 17, 2015

July 17, 2015

Hello everyone, I know, I come up with another question involving NativeBoost ... Sorry ! Anyway, I am currently trying to improve the performance of a Pharo application by trying to rewrite some parts in C and use them with NativeBoost. In the application, there is a need to compute a lot of 2D projections of points so basically I need to compute a lot of cosinuses and sinuses on different points. Ultimately I'd like to do it with openMP to use all the processor cores but for now I just wanted to do some tests to find the best way to combine Pharo and C. The first test consisted in writing a very simple C function and use it from inside Pharo : void project (Point *p) { p->x = cos(p->x); p->y = sin(p->y); } with typedef struct { double x; double y; } Point; In Pharo I created a NBExternalStructure to match Point and everything worked as expected. Now I ran some performance tests and there are some results I don't really understand :( 1) First test was : test | t1 t2 tC tPharo | tC := 0. tPharo := 0. 1 to: 1000000 do: [ :i | | p1 | p1 := Point x: i + (1.0 / i ) y: i - (1.0 / i). t1 := Time microsecondsToRun: [ p1 setX: p1 x cos setY: p1 y sin. ] tPharo := tPharo + t1. ] 1 to: 1000000 do: [ :i | | p2 | p2 := MyPoint x: i + (1.0 / i ) y: i - (1.0 / i). t2 := Time microsecondsToRun: [ self primProject: p2. ] tC := tC + t2. ] Results here are arround 185 ms for tC and 210 ms for tPharo. Nothing really bothered me with this test as results seemed coherent (are they ?). 2) Second test was : test2 | tC tPharo array1 array2 size | size := 1000000. array1 := Array new: size. array2 := Array new: size. 1 to: size do: [ :i | array1 at: i put: (Point x: i + (1.0 / i ) y: i - (1.0 / i)). array2 at: i put: (MyPoint x: i + (1.0 / i ) y: i - (1.0 / i)). ]. tPharo := Time millisecondsToRun: [ array1 do: [ :each | each setX: each x cos setY: each y sin. ]. ]. tC := Time millisecondsToRun: [ array2 do: [ :each | self primProject: each. ]. ]. Results here are arround 3 500 ms for tPharo and 150ms for tC. And I don't really understand why such a difference. I've tried doing tC first but it changed nothing. I've checked the results and the contents of array2 are all updated correctly. Is there a problem with tC or tPharo ? What am I doing wrong ? On another hand, I also noticed that it is faster to allocate the array with Pharo Points than the array with MyPoint C-ish struct. I did some more testing and it seemed that on a general basis it is faster to manipulate Pharo objects than C-ish structs or pointers. For example, it is faster to read in a Pharo array than to read in a NativeBoost_to_C array. Knowing so, what kind of C types should I use to avoid losing too much time manipulating them with NativeBoost ? Is it preferable, for example, to use two separate double instead of a struct with two doubles inside ? Thank you very much, Matthieu

1 0

NativeBoost and OpenMP
by Matthieu Lacaton July 17, 2015

July 17, 2015

Hello, I haven't really seen anything related to this on the Internet and maybe some people will find it cool so I just wanted to report one thing I found out today : NativeBoost works great with OpenMP ! I wrote a C function twice, once with openMP and once without. I made 32 bits libraries and used them from inside Pharo with NativeBoost. When using the non - openMP library, only one core was used but when using the openMP library, both my cores were used and the time it took to run was really divided by (a little bit less than) 2 ! That's just me but i find it really cool :p Cheers, Matthieu

3 2