April 2017 - Pharo-users - lists.pharo.org

Exporting Packages to Cincom Smalltalk (VisualWorks)
by Esteban A. Maringolo April 18, 2017

April 18, 2017

Is there any exporter than can convert an RPackage into a VW Parcel (.pst), in XML or Chunk format? I need to migrate a few libraries of my own and couldn't find anything, so I'm asking before start writing something :) Regards! Esteban A. Maringolo

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How childrenBlock: in TreeModel works
by chrismihaylyk April 17, 2017

April 17, 2017

Hi! Could anyone explain me how works childrenBlock: method from TreeModel? step-by-step. What data it operates? How makes a result? Thanks a lot? Khrystyna. -- View this message in context: http://forum.world.st/How-childrenBlock-in-TreeModel-works-tp4940884.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Convert Literal array into Dynamic array
by chrismihaylyk April 17, 2017

April 17, 2017

HI, friends! Can anyone help me how to convert literal array: #(2 3 4) into the dynamic array: {2. 3. 4}? Thanks a lot, Khrystyna! -- View this message in context: http://forum.world.st/Convert-Literal-array-into-Dynamic-array-tp4942305.ht… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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UK Smalltalk User Group meeting - Monday, 24th April
by Giovanni Corriga April 17, 2017

April 17, 2017

The next meeting of the UK Smalltalk User Group Meeting will be on Monday, 24th April. We'll meet at our usual venue The Counting House ( http://www.the-counting-house.com/) at 7pm. If you'd like to join us, you can just show up at the pub. You can also sign up in advance at the meeting's Meetup page: https://www.meetup.com/UKSTUG/events/238935668/ . See you there!

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PostgreSQL and Pharo 6
by Dimitris Chloupis April 17, 2017

April 17, 2017

Hey guys , I play with PostgreSQL and I really like it, sorry Esteban :D I am using Python for it but I would like to give access also to Pharo to my database. I was informed that Garage has a driver for PostgreSQL , is there any other candidate ? Any advice ?

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Parser for javascript mongodb (json) notation selects
by chrismihaylyk April 16, 2017

April 16, 2017

Hello, friends! I'm creating MongoDBBrowser that have all CRUD operations and I need a parser that translates javascript queries to MongoDB into the queries (for making selects, inserts etc.) using MongoQuery class. For example, I have query db.SomeCollection.find( {$or: [ { name: { $regex: /test/i } }, { description: { $regex: /test/i } } ] } ) that is manually rewriting into someCollection select: { '$or' -> { { 'name' -> { '$regex' -> 'test' . '$options' -> 'i' } asDictionary } asDictionary. { 'description' -> { '$regex' -> 'test' . '$options' -> 'i' } asDictionary } asDictionary } } asDictionary But I need to have a parser that will do it automatically. Maybe there are already exist one? If not, how to write my own? Please help. Thanks a lot, Khrystyna=) -- View this message in context: http://forum.world.st/Parser-for-javascript-mongodb-json-notation-selects-t… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Pharo image freeze and "Alt-." has no effect
by Steven RÃ©mot April 16, 2017

April 16, 2017

Hello everyone, I'm new to pharo, and was writing a simple 2D game with Athens for rendering to practice a bit. I'm loving the environment so far, developing the game while it's running is really enjoyable :-) . However, when the game is running, the pharo image will freeze at a random time. Alt-. doesn't make my image back to normal, the only solution I found is closing my image and opening it again, until the next freeze... I don't really know what to do to investigate this bug, there is no output from pharo about this. The only thing I thought about is starting from a fresh image, importing my code and running it again to ensure it wasn't some messy state in the image I was using, and it froze even when running my code from a fresh image. What can I do to debug it? Do you need more information to give me a direction? Just in case you need it, here is the source: https://www.dropbox.com/s/pfn7ccw27i4nqr7/Creakout-debug.st?dl=0 Thanks, Steven RÃ©mot

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Pharo 6 snap install
by Alistair Grant April 16, 2017

April 16, 2017

Hi Everyone, I've made a snap package for Pharo 6 which I think is far enough along for some wider testing. To get Pharo up and running on Ubuntu 16.04: # Install Pharo $ sudo snap install --edge pharo --classic # If your system isn't configured for threaded heartbeat: $ sudo pharo.config # Download the latest Pharo 6 image $ pharo.getimage # Go... $ pharo.ui Pharo.image # or: $ pharo Pharo.image eval 4+3 To get a list of available commands: $ snap info pharo If you're on Debian or Ubuntu 14.04 you'll need to install snapd, see https://snapcraft.io/docs/core/install The VM is the threaded heartbeat, dated 201704101933. The installation flags are: --edge - The edge channel is for development versions. It progresses to beta, candidate and then stable. --classic - Snap packages are normally sandboxed for security reasons. Since Pharo is a development environment in which we want to be able to run any executable, or load any library, it is installed with access to the entire system (as the running user). Why use snap packages? - They include all dependencies. In particular, for the 32 bit versions, this means that it isn't necessary to install all the 32 bit architecture and associated dependencies. - Including dependencies means that there shouldn't be any problems with incompatible library versions when upgrading. Why not use snap packages? - It's a relatively new technology, with a number of rough edges. - There may still be issues with its sandboxing that I haven't discovered yet. - Please let me know of any others to be listed here. - Because the package uses classic confinement, it isn't cross-distribution in practice (unfortunately). If you don't trust me to configure your system correctly (which requires sudo): - All the scripts that make up the sub-commands are visible, e.g. pharo.config can be viewed at /snap/pharo/current/usr/bin/CONFIG The packaging code is at: https://github.com/akgrant43/pharo-snap I'm interested to know if people would like to see this eventually become a supported package format. Cheers, Alistair

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FileReference / and parent
by Alistair Grant April 16, 2017

April 16, 2017

Hi All, I previously suggested a change to Path>>/ which actually covered two issues: 1. The handling of the parent directory notation, i.e. ".." 2. The construction of path segments when appending a string. As Damien pointed out, the first issue needs a bit more consideration. I think the second point is still problematic and can be addressed separately. In particular: ('/a/b/c' asFileReference / 'd/e/f') parent "File @ /a/b/c" I would expect the result to be "File @ /a/b/c/d/e" The fix is straightforward (although someone may be able to propose a more elgant solution): -- / aString | path additionalPath index | aString isEmptyOrNil ifTrue: [ Error signal: 'Path element cannot be empty or nil']. additionalPath := Path from: aString. path := self class new: self size + additionalPath size. path copyFrom: self. index := self size + 1. additionalPath do: [ :each | path at: index put: each. index := index + 1. ]. ^ path -- 1. Do you agree with the proposed change? 2. (Assuming you agree): Should we target Pharo 6.0 or 7.0? On one side, this is clearly a bug, on the other, no one has reported it to date, so it isn't having a big impact. Thanks, Alistair

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How can I set the SmaccDebugParser in Moose
by Stephane Ducasse April 16, 2017

April 16, 2017

Hi I found the SmaCCParserDebugger and I found the debug menu in the Smacc tool. Now I get a GT and byteCode debugger but I do not find a way to make the new debugger actif. Stef

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