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does MongoTalk implement modifier operators? e.g. $set
by Sabine KnÃ¶fel March 12, 2013

March 12, 2013

Hi, I managed reading and writing my model (e.g. Person objects) into MongoDB with MongoTalk. But I did use replace:with: e.g. "get person from db with OID - this is a dictionary with ALL OLD fields of the person as stored in the database" thePersonFromDatabaseDict := (self personsCollection queryOne: [ :query | query where: {('_id' -> aPerson mongoObjectId )} asDictionary ]) theNewDict := aPerson mongoDataDict "dictionary with the NEW fields for this person" self personsCollection replace: thePersonFromDatabaseDict with: theNewDict Which means I replace the whole person object in the database with my current instance data in the image. Also it is much overhead creating the dictionary with all fields from the person in the image. This is not ok, when I want to set e.g. one field in the person object. For this reason I want to use the "Modifier operators", e.g. $set http://docs.mongodb.org/manual/applications/update/ >From there: "Update a Field in a Document. Use $set to update a value of a field. The following operation queries the bios collection for the first document that has an _id field equal to 1 and sets the value of the field middle, in the subdocument name, to Warner: db.bios.update( { _id: 1 }, { $set: { 'name.middle': 'Warner' }, } ) *I did not find how to use this in MongoTalk. I can not imagine that this functionality is missing but I don't know how to create this from Mongotalk. Unfortunately there is no documentation and as far as I understand there are no test cases for update modifiers.* So, can anyone give me a code snippet how to use update modifiers in Mongotalk? Sabine -- View this message in context: http://forum.world.st/does-MongoTalk-implement-modifier-operators-e-g-set-t… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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GSoC13 projects
by Paul Davidowitz March 11, 2013

March 11, 2013

Are the GSoC13 projects open to the general Smalltalking public, or are they only for students? Some of the projects sound quite interesting!

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HTML5 Parser
by Mohammad Al Houssami (Alumni) March 11, 2013

March 11, 2013

Hello again, Im building an HTML5 Parser in smalltalk. Im building it according to the pseudo code provided by WHATWG mainly these: Tokenization: http://www.whatwg.org/specs/web-apps/current-work/multipage/tokenization.ht… Tree Construction: http://www.whatwg.org/specs/web-apps/current-work/multipage/tree-constructi… Im still in the Tokenization phase. The spec defines a state machine. It describes what has to be done when we reach a certain state. My approach to building the tokenizer is by representing each state as a method. Each method does some operations ( calling other methods to represent changing state or returning tokens etc..) I will be translating the pseudo code provided as is to Smalltalk. I am not sure if this is the best approach to do things especially that I am still new to Smalltalk. I was told by Stephane Ducasse to use PetitParser. Doing a quick reading I noticed that it is used when grammars are available. In my case I don't have a grammar but pseudo-code of a parser. Can I know if anyone has any suggestions for such a project or any comments on the approach I am aiming to follow ? Thanks in advance, Mohammad

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Pharo .image loading issues.
by Mohammad Al Houssami (Alumni) March 11, 2013

March 11, 2013

Hello All Im working on an HTML5 parser in smalltalk as part of my postgraduate project. Im completely new to pharo and smalltalk and I've been working with it for around a week now. It was the first time I close pharo. I was trying to load the image file but I couldn't and pahro was complaining with errors. This is what I get: [cid:image002.jpg@01CE1DC1.989EA330] If I keep on clicking proceed I get to this: [cid:image003.jpg@01CE1DC8.19CEEFE0] I have no idea at all why this is happening. This is the first time I load the image to pharo. What I did was I opened the image file with pharo. Im not sure if this might be causing the problem. Any help would really be appreciated. Thank You

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VeriMeta&PharoLauncher: semi-auto metacello verification
by HwaJong Oh March 10, 2013

March 10, 2013

It is important to see the overall quality of your metacello configuration. Metacello is there to for programmer to guarantee to the user about the success of installation. Your metacello configuration loses trust everytime it fails to install or not all unittest passes. With VeriMeta & PharoLauncher, you can check for each spec(or package) if it succeeds to install and all the unittest in it passes or not, or if there is no unittest. Watch the video below in fullscreen mode and 1080p. http://www.youtube.com/watch?v=kYYgDVY8Dqc Best Regards HwaJong Oh -- View this message in context: http://forum.world.st/VeriMeta-PharoLauncher-semi-auto-metacello-verificati… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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First complete version of the ZeroConf and CommandHandler chapter :)
by StÃ©phane Ducasse March 10, 2013

March 10, 2013

This chapter will be included in the Deep into Pharo book. We are working to release it. Then we are working on Pharo for the entreprise. Stef

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Breaking down BorderMorph
by irfankhan1 March 9, 2013

March 9, 2013

Hello, I am trying to generate a maze using Depth First Search Algorithm, I am stuck at breaking Borders of Morph <http://forum.world.st/file/n4675865/Morphborder.png> How can i create BorderedMorphs of these shapes?? -- View this message in context: http://forum.world.st/Breaking-down-BorderMorph-tp4675865.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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deleting mcz file from smalltalkhub
by HwaJong Oh March 9, 2013

March 9, 2013

Hi, folks I want to delete one mcz file or mcz files of a package name from smalltalkhub.com. Best Regards HwaJong -- View this message in context: http://forum.world.st/deleting-mcz-file-from-smalltalkhub-tp4675885.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Are all PharoVMs NativeBoost enabled VMs now?
by MartinW March 8, 2013

March 8, 2013

Are all PharoVMs NativeBoost enabled VMs now? So the NBCogVMs are no longer relevant? -- View this message in context: http://forum.world.st/Are-all-PharoVMs-NativeBoost-enabled-VMs-now-tp467572… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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in pharo 2.0 on linux, how do I remove a method using the keyboard?
by Paul DeBruicker March 5, 2013

March 5, 2013

In pharo 1.4 I would highlight the method in the right most pane of the OmniBrowser and hit ctrl+x. I can see a faint x,m next to Remove... in the menu when I right click the method, but hitting ctrl+x or ctrl+m or ctrl+x+m or alt+x or alt+x+m or alt+m doesn't seem to do anything. Thanks for the help

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