August 2016 - Pharo-users - lists.pharo.org

Re: [Pharo-users] manipulating strings

by Esteban A. Maringolo

Would this work? 'Uquillas G\''{o}mez' onlyLetters asLowercase Esteban A. Maringolo 2016-08-10 15:00 GMT-03:00 stepharo <stepharo(a)free.fr>: > I did > > > String > streamContents: [ :str | > aString > do: [ :aChar | > aChar isLetter > ifTrue: [ str nextPut: aChar asLowercase ] ] ] > > > I'm curious about other solution because I was lucky that isLetter exist. > > Stef > > Le 10/8/16 Ã 19:48, stepharo a Ã©crit : > >> Hi >> >> I have the following problem I want to transform a string into another >> while removing a set of characters >> >> 'Uquillas G\'{o}mez' >> >> -> >> >> 'uquillasgomez' >> >> And I wonder how to do that? >> >> copyWithoutAll: >> >> >> I was thinking to create a string of the same size and copy only the valid >> characters. >> >> Now I do not know how to set the size of the resulting string. >> >> I could use stream. >> >> Any ideas is welcome. >> >> Stef >> >> >> > >

Aug. 10, 2016

Re: [Pharo-users] manipulating strings

by stepharo

I did String streamContents: [ :str | aString do: [ :aChar | aChar isLetter ifTrue: [ str nextPut: aChar asLowercase ] ] ] I'm curious about other solution because I was lucky that isLetter exist. Stef Le 10/8/16 Ã 19:48, stepharo a Ã©crit : > Hi > > I have the following problem I want to transform a string into another > while removing a set of characters > > 'Uquillas G\'{o}mez' > > -> > > 'uquillasgomez' > > And I wonder how to do that? > > copyWithoutAll: > > > I was thinking to create a string of the same size and copy only the > valid characters. > > Now I do not know how to set the size of the resulting string. > > I could use stream. > > Any ideas is welcome. > > Stef > > >

Aug. 10, 2016

manipulating strings

by stepharo

Hi I have the following problem I want to transform a string into another while removing a set of characters 'Uquillas G\'{o}mez' -> 'uquillasgomez' And I wonder how to do that? copyWithoutAll: I was thinking to create a string of the same size and copy only the valid characters. Now I do not know how to set the size of the resulting string. I could use stream. Any ideas is welcome. Stef

Aug. 10, 2016

Re: [Pharo-users] Spec > TreeModel: Updating the tree selection after a deletion

by Nicolai Hess

2016-08-10 19:05 GMT+02:00 Offray Vladimir Luna CÃ¡rdenas < offray.luna(a)mutabit.com>: > Hi, > > I have been fighting with this for several hours until now. I can't > understand how to manage change on selections on TreeModels with Spec, > which is really frustrating.... > > Here is what I have: > > GrafoscopioNotebook>>initializePresenter > tree whenSelectedItemChanged: [ :item | > self updateBodyFor: item. > header whenTextChanged: [ :arg | > (tree selectedItem content header) = arg > ifFalse: [ > (tree highlightedItem) content header: arg. > tree roots: tree roots]]] > > GrafoscopioNotebook>>updateBodyFor: item > item > ifNotNil: [ self changeBody: item ] > ifNil: [ self inform: 'Nil node' ] > > and #changeBody: deals with putting a textual or code pane according to > some tags on the selected node (and it's working properly). > > The problem seems that when I add/delete nodes to my tree, or while > changing the selection between nodes, the item variable becomes temporarily > nil and I can't update the contents of the body to correspond to the > current selection. I would like to say explicitly that a new tree added > node gets the selection and that the deletion of nodes gives selection to > its siblings or parent (if there are not siblings) and that node body pane > should be updated accordingly. > > Again, any hint would be really valuable... I'll take a break from the > computer to dissipate current frustration... Pharo is generally a happy > productive place... but not today :-/... anyway some hits are part of > learning to play with it. > Hi Offray, I do remember that I tried this as well, I will if I can find out how far I got it to work. > > Cheers, > > Offray > > > On 07/08/16 16:11, Offray Vladimir Luna CÃ¡rdenas wrote: > >> Hi, >> >> I have a Spec TreeModel to represent the GUI of a grafoscopio notebook. >> >> The message that deletes nodes is something like this: >> >> ============ >> >> GrafoscopioNotebook>>removeNode >> | nodeToDelete | >> nodeToDelete := tree selectedItem content. >> nodeToDelete parent removeNode: nodeToDelete. >> tree selectedItem: tree selectedItem parentNode. >> tree needRebuild: true. >> tree roots: tree roots. >> self buildWithSpecLayout: self class defaultSpec. >> >> ============= >> >> And its working fine in the sense that it deletes the selected node, but >> after the deletion the contents of the old node are showed no matter if I >> change the node selection on the tree. I would like to manage selections in >> a smart way, so if I add a new node to the notebook, the new node gets the >> selection. If I delete a notebook node, the previous node gets selected or >> the parent if no more siblings are encountered and so on. There is some >> simple example to look for, about managing and updating selections in a >> TreeModel interface? >> >> Thanks, >> >> Offray >> >> >> >> > >

Aug. 10, 2016

Re: [Pharo-users] Spec > TreeModel: Updating the tree selection after a deletion

by Offray Vladimir Luna CÃ¡rdenas

Hi, I have been fighting with this for several hours until now. I can't understand how to manage change on selections on TreeModels with Spec, which is really frustrating.... Here is what I have: GrafoscopioNotebook>>initializePresenter tree whenSelectedItemChanged: [ :item | self updateBodyFor: item. header whenTextChanged: [ :arg | (tree selectedItem content header) = arg ifFalse: [ (tree highlightedItem) content header: arg. tree roots: tree roots]]] GrafoscopioNotebook>>updateBodyFor: item item ifNotNil: [ self changeBody: item ] ifNil: [ self inform: 'Nil node' ] and #changeBody: deals with putting a textual or code pane according to some tags on the selected node (and it's working properly). The problem seems that when I add/delete nodes to my tree, or while changing the selection between nodes, the item variable becomes temporarily nil and I can't update the contents of the body to correspond to the current selection. I would like to say explicitly that a new tree added node gets the selection and that the deletion of nodes gives selection to its siblings or parent (if there are not siblings) and that node body pane should be updated accordingly. Again, any hint would be really valuable... I'll take a break from the computer to dissipate current frustration... Pharo is generally a happy productive place... but not today :-/... anyway some hits are part of learning to play with it. Cheers, Offray On 07/08/16 16:11, Offray Vladimir Luna CÃ¡rdenas wrote: > Hi, > > I have a Spec TreeModel to represent the GUI of a grafoscopio notebook. > > The message that deletes nodes is something like this: > > ============ > > GrafoscopioNotebook>>removeNode > | nodeToDelete | > nodeToDelete := tree selectedItem content. > nodeToDelete parent removeNode: nodeToDelete. > tree selectedItem: tree selectedItem parentNode. > tree needRebuild: true. > tree roots: tree roots. > self buildWithSpecLayout: self class defaultSpec. > > ============= > > And its working fine in the sense that it deletes the selected node, > but after the deletion the contents of the old node are showed no > matter if I change the node selection on the tree. I would like to > manage selections in a smart way, so if I add a new node to the > notebook, the new node gets the selection. If I delete a notebook > node, the previous node gets selected or the parent if no more > siblings are encountered and so on. There is some simple example to > look for, about managing and updating selections in a TreeModel > interface? > > Thanks, > > Offray > > >

Aug. 10, 2016

Re: [Pharo-users] Some interesting datasets | https://numeracy.co

by Sven Van Caekenberghe

Very good. Thank you, Brian. > On 10 Aug 2016, at 00:59, sirwart <ohohvi(a)gmail.com> wrote: > > Hey Sven, > > I put together that dataset and the latin-1 encoding was an oversight. > Sorry! > > I fixed it so it's UTF-8 like it should have been from the start. You might > have to remove the latin-1 decoder from the cities.csv snippet to decode it > properly. > > Brian > > > > -- > View this message in context: http://forum.world.st/Some-interesting-datasets-https-numeracy-co-tp4910223… > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >

Aug. 10, 2016

Re: [Pharo-users] Some interesting datasets | https://numeracy.co

by sirwart

Hey Sven, I put together that dataset and the latin-1 encoding was an oversight. Sorry! I fixed it so it's UTF-8 like it should have been from the start. You might have to remove the latin-1 decoder from the cities.csv snippet to decode it properly. Brian -- View this message in context: http://forum.world.st/Some-interesting-datasets-https-numeracy-co-tp4910223… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Aug. 9, 2016

Some interesting datasets | https://numeracy.co

by Sven Van Caekenberghe

Hi, I know a lot of people are interested in (public) datasets (to use as examples). The website https://numeracy.co contains a (small) number of interesting ones. Here is how to access them using NeoCSV. (NeoCSVReader on: 'https://numeracy.co/standard-library/us-population/states.csv' asUrl retrieveContents readStream) upToEnd. or ZnClient new url: 'https://numeracy.co/standard-library/us-population/states.csv'; contentReader: [ :entity | (NeoCSVReader on: entity readStream) upToEnd ]; get. Of course, they don't use UTF-8 and don't advertise it, so on some datasets you need to do something extra. (NeoCSVReader on: (ZnDefaultCharacterEncoder value: ZnCharacterEncoder latin1 during: [ 'https://numeracy.co/standard-library/us-population/cities.csv' asUrl retrieveContents ]) readStream) upToEnd. (Warning: this last example is quite large, 500K records). Sven

Aug. 9, 2016

Final CFP: DSLDI'16 at SPLASH

by Tijs van der Storm

********************************************************************* FINAL CALL FOR TALK PROPOSALS DSLDI 2016 Fourth Workshop on Domain-Specific Language Design and Implementation October 31, 2016 Amsterdam, Netherlands Co-located with SPLASH http://2016.splashcon.org/track/dsldi2016 https://twitter.com/wsdsldi ********************************************************************* Deadline for talk proposals: August 15, 2016 (extended!) *** Workshop Goal *** Well-designed and implemented domain-specific languages (DSLs) can achieve both usability and performance benefits over general-purpose programming languages. By raising the level of abstraction and exploiting domain knowledge, DSLs can make programming more accessible, increase programmer productivity, and support domain-specific optimizations. The goal of the DSLDI workshop is to bring together researchers and practitioners interested in discussing how DSLs should be designed, implemented, supported by tools, and applied in realistic contexts. The focus of the workshop is on all aspects of this process, from soliciting domain knowledge from experts, through the design and implementation of the language, to evaluating whether and how a DSL is successful. More generally, we are interested in continuing to build a community that can drive forward the development of modern DSLs. An additional goal of this year's workshop is to encourage discussion about the usability of DSLs, and to establish connections with researchers in related areas, such as end-user software engineering, who have studied human factors of programming languages and tools. *** Workshop Format *** DSLDI is a single-day workshop and will consist of moderated audience discussions structured around a series of talks. The role of the talks is to facilitate interesting and substantive discussion. Therefore, we welcome and encourage talks that express strong opinions, describe open problems, propose new research directions, and report on early research in progress. Proposed talks should be on topics within DSLDI's area of interest, which include but are not limited to: * solicitation and representation of domain knowledge * DSL design principles and processes * DSL implementation techniques and language workbenches * domain-specific optimizations * human factors of DSLs * tool support for DSL users * community and educational support for DSL users * applications of DSLs to existing and emerging domains * studies of usability, performance, or other benefits of DSLs * experience reports of DSLs deployed in practice *** Call for Submissions *** We solicit talk proposals in the form of short abstracts (max. 2 pages). A good talk proposal describes an interesting position, open problem, demonstration, or early achievement. The submissions will be reviewed on relevance and clarity, and used to plan the mostly interactive sessions of the workshop day. Publication of accepted abstracts and slides on the website is voluntary. * Deadline for talk proposals: August 15, 2016 * Notification: September 5, 2016 * Workshop: October 31, 2016 * Submission website: https://dsldi16.hotcrp.com/ *** Workshop Organization *** Organizers: * Eric Walkingshaw (Oregon State University) * Tijs van der Storm (CWI) Program committee: * Iman Avazpour (Deakin University) * Christopher Bogart (Carnegie Mellon University) * Andy Gill (University of Kansas) * Sylvia Grewe (TU Darmstadt) * Kate Howland (University of Sussex) * Lindsey Kuper (Intel Labs) * Darya Kurilova (Carnegie Mellon University) * Ralf LÃ¤mmel (University of Koblenz-Landau) * Tanja Mayerhofer (Vienna University of Technology) * Marjan Mernik (University of Maribor) * Sarah Mount (King's College London) * Justin Pombrio (Brown University) * Tillmann Rendel (University of TÃ¼bingen) * Tiark Rompf (Purdue & Oracle Labs) * Sonja Schimmler (Bundeswehr University Munich) * Markus VÃ¶lter (itemis) * Peng Wu (Huawei America Lab)

Aug. 9, 2016

Re: [Pharo-users] How to wrap text in labels?

by Tommaso Dal Sasso

On 08/08/16 13:04, Nicolai Hess wrote: > > > 2016-08-08 12:27 GMT+02:00 Tommaso Dal Sasso > <tommaso.dalsasso(a)gmail.com <mailto:tommaso.dalsasso@gmail.com>>: > > Hello everybody, > > I was wondering, is there a way to wrap text inside a Morphic/Bloc > label? > I am building a list of text elements, but I am not able to wrap > the text to match the width of the widget. > > For the moment I solved the issue by instantiating a Rubric text > area for each text element, but it becomes much more resource > expensive and slower. > > Is there a better widget to manage that? > > Thanks, > Tommaso > > > Hi Tommaso, > > can you use a TextMorph with a panel or an other morph for the > background, and set the full owners shape and wrap-flag ? > I think the default label widgets (StringMorph/LabelMorph) do not > support text wrapping. > > Morph new color: Color white; addMorph:(TextMorph new contents:'Hello > World Hello World Hello > World';wrapFlag:true;fillsOwner:true;yourself);openInHand. > Thanks a lot, your example was what I was looking for. I'll try this way. Cheers, Tommaso

Aug. 9, 2016