February 2015 - Pharo-users

What happens to saved inspectors?
by PBKResearch Feb. 18, 2015

Feb. 18, 2015

Hello I am using Moose 5, which is essentially Pharo 3, downloaded late December 2014. I have a development project which mainly consists of a collection of workspaces and inspectors (I really do intend to turn it into a properly structured set of classes one day!). I have noticed that, whenever I save an image with some inspectors open and then reopen the image, the title bars of the inspectors have become red rectangles with a cross superimposed. Often I can work out what the title should be and carry on, but in many cases all I can do is close down the inspector and reopen it. Is this a known problem, and is there any way to work round it? Thanks for any help Peter Kenny

3 4

Learning Spec
by Sven Van Caekenberghe Feb. 18, 2015

Feb. 18, 2015

Hi, >From now on it is forbidden to complain about Spec in general, unspecific terms unless you have taken the time to learn about it. Here is a guide to documentation about Spec, most recent first. There is an excellent presentation by Johan Fabry did during the last Pharo Days, 'Using Spec to Build a UI'. *MUST WATCH* (the video is not yet fully public, but soon will be, the link should work though): http://youtu.be/OL23s9ZUIR0?list=PL4actYd6bfnz98ngrKALwwStl3C3odEKG The slides are also not yet available, but soon will be (the talk is much better that the slides on their own). This draft chapter 'Spec: a framework for describing user interfaces' for an upcoming book: https://ci.inria.fr/pharo-contribution/view/Books/job/PharoBookWorkInProgre… Look in the image. Browse the hierarchy below AbstractWidgetModel in the category Spec-Core-Widgets in Pharo 4, look at the protocols called 'protocol' & 'protocol-events' mainly. Look for references to each class. Trace senders of methods until you arrive at examples. Study the examples, play with them, change them. The UI of most tools in Pharo is also implemented using Spec. Browse the hierarchy below ComposableModel to find them. (Komitter, Versionner, Critics, Metacello, the old Eye Inspectors, ..). Watch and learn. The cool Spec website: http://spec.st Read some cool articles like: https://medium.com/concerning-pharo/rediscovering-the-ux-of-the-legendary-h… See the section 'HP35CalculatorModel' for the Spec part. The following papers (some older ones refer to API that has changed): 'Seamless Composition and Reuse of Customizable User Interfaces with Spec' http://rmod.lille.inria.fr/archives/papers/Ryse13a-SCICO-Spec.pdf 'Spec - A Framework for the Specification and Reuse of UIs and their Models' http://rmod.lille.inria.fr/archives/papers/Ryse12b-Spec-IWST12-Final.pdf 'Spec â Technical Report' http://rmod.lille.inria.fr/archives/reports/Ryse12a-SpecTechReport.pdf Use the image to build a couple of simple UIs using Spec. You will be surprised to learn that it is not that difficult. Just go with the flow, don't try to enforce your world view on it, wait until you are further along. Have fun ! Sven PS: Once you have done all the above, you are most welcome to help improve Spec by discussing specific, concrete issues. -- Sven Van Caekenberghe Proudly supporting Pharo http://pharo.org http://association.pharo.org http://consortium.pharo.org

8 19

Videos PharoDays online
by Marcus Denker Feb. 18, 2015

Feb. 18, 2015

Hi, Sorry for the delayâ¦ https://www.youtube.com/channel/UCp3mNigANqkesFzdm058bvw/videos

1 0

i feel dumb / Pharo3 > OrderedCollection >> do:
by Cameron Sanders Feb. 18, 2015

Feb. 18, 2015

I must be making some silly error here that i cannot see clearly. Why does the following leave anything in the list 'a'? Run it in a workspace. With or without the shallowCopy, i am left with a list with half of the elements in it. Always half. This version of Pharo3 (21.0) was downloaded last week. I am running on a Mac. Thanks in advance. ... Maybe I just need more coffee. -Cam | a | a := { #a. #b. #c. #d. } asOrderedCollection. a shallowCopy do: [ :item | (a includes: item) ifTrue: [ a remove: item ]]. a size

1 0

[ANN] Pharo4 code freeze will be 28/Feb, release target 1/Apr
by Esteban Lorenzano Feb. 18, 2015

Feb. 18, 2015

Hi, Soâ¦ Iâm announcing that we will not introduce any new change to Pharo4 after February 28, and we will work on stabilisation and bug fixedâ¦ we are aiming to release in April 1st. This version will not be spur-based, that will come with the summer release. Cheers, Esteban

3 8

Re: [Pharo-users] how do I recompile a class in Pharo 3?
by Joachim Tuchel Feb. 17, 2015

Feb. 17, 2015

I can only think of filing out and back in... Joachim Am 17.02.2015 18:25 schrieb Paul DeBruicker <pdebruic(a)gmail.com>: > > And a package, class heirarcy, etc.... > > > > Thanks for any tips > > > Paul > >

1 0

how do I recompile a class in Pharo 3?
by Paul DeBruicker Feb. 17, 2015

Feb. 17, 2015

And a package, class heirarcy, etc.... Thanks for any tips Paul

2 1

[ANN (Toy)]: Gold Rush
by Sean P. DeNigris Feb. 17, 2015

Feb. 17, 2015

I was in a jewelry store, and I realized how hard it is to figure out the markup on gold jewelry, so I did a little code kata... Loads in 4.0 with: Gofer it smalltalkhubUser: 'SeanDeNigris' project: 'SeansPlayground'; configurationOf: 'GoldRush'; loadDevelopment. (#GoldRushSpecification asClass>>#testAcceptance) browse. "You can describe a piece of jewelry like:" | ring | ring := GoldJewelry new weight: 4.1 grams; carats: 18; price: 275 dollars; yourself. "And then see how much of a premium you're paying over the gold's melt value e.g.:" ring markup should equal: ring price - expectedGoldValue. ring percentOverSpot percent should equal: ring price / expectedGoldValue - 1. "If you inspect a GoldJewelry with GT Tools, you will see a special "Gold" tab with the same calculated values (i.e. #markup and #percentOverSpot)" ____________________________________ This was an interesting and fun test of Aconcagua, GT Tools, and Pharo 4.0 :) n.b. it pulls the gold spot price off the web, updating daily. Have fun! ----- Cheers, Sean -- View this message in context: http://forum.world.st/ANN-Toy-Gold-Rush-tp4806070.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

2 2

Spec help in HelpBrowser
by nacho Feb. 17, 2015

Feb. 17, 2015

If you are interested in having some Spec documentation in the image. I'm preparing some help for the HelpBrowser. It is mainly taken from the Spec chapter that it's being written. However if you want to take a look: MCSmalltalkhubRepository owner: 'IgnacioSniechowski' project: 'SpecHelp' user: '' password: '' Best Nacho ----- Nacho Smalltalker apprentice. Buenos Aires, Argentina. -- View this message in context: http://forum.world.st/Spec-help-in-HelpBrowser-tp4806055.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

2 1

Re: [Pharo-users] [ANN] PUnQLite NoSQL database project updated
by Stephan Eggermont Feb. 17, 2015

Feb. 17, 2015

If I use the file from https://github.com/mumez/PunQLite/tree/master/binary/mac at least the library is found. The db file is not created though resulting in a PqCursorError in keys db := PqDatabase open: 'test.db'. db at: 'Smalltalk' put: 'COOL'. db at: 'Pharo' put: 'HOT'. db at: 'Smalltalk' ifPresent: [:data | data asString inspect ]. Transcript cr; show: db keys.

3 2