- Pharo-users - lists.pharo.org

Xcode's Swift Playground
by darrinm Aug. 5, 2014

Aug. 5, 2014

This is the sort of thing Smalltalk seems well suited for (live coding w/ value and iteration display). Does anyone know of something like it that has been done before in Smalltalk? I don't have a good link to a demonstration purely of the Playground but there is a little info here: https://developer.apple.com/swift/ -- View this message in context: http://forum.world.st/Xcode-s-Swift-Playground-tp4761425.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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NativeBoost: use of array
by Thomas Bany Aug. 5, 2014

Aug. 5, 2014

Hi again ! I'm having trouble to call the function with the following prototype : void propagateTLE(orbit_t orb, double secondSince[], xyz_t * out, size_t > nbEpoch) with the corresponding NB call: self nbCall: #( void propagateTLE(orbit_t orbit, double * secondSince, > xyz_t * out, size_t nbEpoch) ) The argument *secondSince* is an input and the argument *out* is the output pointer that the function should fill. I have made 2 subclass of NBExternalArray to feed this function, (allmost) namely: *ArrayOfDoubles *and *ArrayOfXYZ*. Should I mention that type *xyz_t* is a struct that I modeled with an *NBExternalStructure*. I face 2 issues: - The type *ArrayOfXYZ* is refused as an *xyz_t** type. However, the *ArrayOfDoubles *is accepted as a *double** type. - If a get rid of the *out* argument to test the array *secondSince*, I get an undefined error (Error durring FFI call: nil). My current solution is to use the adress of my arrays and the following NB call: self nbCall: #( void propagateTLE(orbit_t orbit, NBExternalAddress > secondSince, NBExternalAddress out, size_t nbEpoch) ) But it feels like I'm cheating my way trough, by pretty much avoiding any type check. Any clue as to why the typecheck of NB is refusing to call my function ? Thanks in advance, Thomas.

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Monticello vs Metacello dependency management
by Evan Donahue Aug. 4, 2014

Aug. 4, 2014

Hello, I am working on getting a project into Monticello, and I am trying to understand the difference between letting Monticello handle package dependencies and setting up a metacello configurationOf class. In particular: PBE2 describes a technique of adding a MyProject-All package that requires MyProject-Core and MyProject-Tests (for example) so that one need only save and load MyProject-All and the others will come along for the ride. I have gotten this to work and it seems like a straightforward approach for a simple project. My question, then, is how does a Metacello ConfigurationOf differ from this approach for the simple core + tests project described? Here are a couple of my points of confusion, but it may be that they can all be answered with one concise statement: 1) If I set up a ConfigurationOf, can that replace the MyProject-All package for saving and loading the whole project at once, or are they complimentary techniques? 2) Is the Monticello action-click >> add required package necessary if one specifies dependencies in the ConfigurationOf? Would they cause problems if they went out of sync with the dependencies described in the ConfigurationOf? 3) Do I correctly infer that the proper way to use a ConfigurationOf is to give it no dependencies, load it from the project repository on its own, and then run its project load message to have it import the rest of the project? If there are any particularly good resources describing the use of Metacello beyond PBE2, please let me know. In the meantime, I'll keep searching and experimenting. Thanks, Evan

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Syncing local cache and SmalltalkHub
by Offray Vladimir Luna CÃ¡rdenas Aug. 4, 2014

Aug. 4, 2014

Hi, I have my outliner buggy mockup on local cache, and I would like to share the code and point to it online using SmalltalkHub for my questions. I have followed the chapter on Source code management with Monticello y PBE2, and it says that you can have your code on SmalltalkHub, but says nothing about how to sync from local cache to your SmalltalkHub account. Can some one could point me the way to do it? Cheers, Offray

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NativeBoost: structure with different types
by Thomas Bany Aug. 4, 2014

Aug. 4, 2014

Hi everyone ! I experience troubles with NBExternalStructure in NativeBoost when the structure modeled contains fields with different types. For example, manipulating the following structure poses no problem and I can manipulate the fields correctly: typedef struct abc_s { double a; double b; double c; } abc; However, setting field 'a' to be an int yields the following symptoms: Â¤ From Pharo to C (function with 'abc' as argument type), the fields are badly read. Â¤ From C to Pharo (function with 'abc' as return type), the VM crash without an error nor a dump. Am I doing something wrong or is it maybe specific to the compiler I use (the one that comes with Visual Studio Express 2013) ? I'm pretty sure I could go arround this using NBExternalObject and building the structure on C side, but it would be nice to avoid it. On a side note, my understanding is that creating a structure on Pharo side will have it stored in Pharo memory. Is it problematic when it comes to pass it by value ? Or should I manage the copying on the C heap to be safe ? Thomas.

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rethinking compilation notifications
by Tudor Girba Aug. 4, 2014

Aug. 4, 2014

Hi, The next stop in our little tour around code actions was the compilation notifications. Again, we used a popper interface to show the error without affecting the underlying text editor: [image: Inline image 2] You can find more details here: http://www.humane-assessment.com/blog/rethinking-compilation-notifications-… Please let us know what you think. Cheers, Doru -- www.tudorgirba.com "Every thing has its own flow"

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MooseTechnology failing again. Any way to download Moose Book?
by Offray Vladimir Luna CÃ¡rdenas Aug. 3, 2014

Aug. 3, 2014

Hi, These days, MooseTechnology.org has being failing continuously and I can not read any documentation on Moose browsers, except for the one in PBE2. There is any way to download this book to see it off-line, hopefully in pdf format? Thanks, Offray

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Data Science with Pharo?
by volkert＠nivoba.de Aug. 3, 2014

Aug. 3, 2014

Here a really nice video on interactive data aquiring, analysis und visualization with F#. http://channel9.msdn.com/posts/Understanding-the-World-with-F Is this the way Pharo + Roassal + ... goes? Ok, we have moose, but a i understand it puts the focus on sw analysis and sw visualization. What about a new easy to use and interactive data science platform? BW, Volkert -- www.nivoba.de "The more complex an object, the larger the investment in learning to use it, and the greater the resistance to abandon it.", NW

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Trying to understand the "display: children:" messages of Moose browsers.
by Offray Vladimir Luna CÃ¡rdenas Aug. 3, 2014

Aug. 3, 2014

Hi, I'm trying to understand the workings of the "display: children:" message of Moose Browsers. Based on the Help Browser example, I have write a node object which contains a header, a body and a ordered collection of Children, wich are other nodes. Now I would like to use moose browsers to navigate a tree made of such nodes. For that I am modifying the "packagesIn:" tree of the PBE2 book example in the Moose chapter. I have something like this: -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= UbakyeBrowser>>packagesIn: constructor | defaultTree | defaultTree := UbakyeNode new. defaultTree becomeDefaultTree. constructor tree display: [:treeHeaders | treeHeaders := defaultTree headers]; children: [:currentNode | self headersOf: currentNode ]; format: #asString -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= The display part is working just because I'm sending a collection of node names (headers), but I don't know how to relate the current selected node with the things that should be shown by the "children:" message. Any help on this is appreciated. By the way, I would like to share my code and point to it, instead of sharing just cut and pasted snippets, because may be I'm doing tons of errors in a lot of places. I have already asked in a separate thread about how to sync local cache and SmalltalkHub repos. Cheers, Offray

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Syncing local cache and SmalltalkHub
by Offray Vladimir Luna CÃ¡rdenas Aug. 3, 2014

Aug. 3, 2014

-------- Original Message -------- Subject: Syncing local cache and SmalltalkHub Date: Thu, 31 Jul 2014 12:12:29 -0500 From: Offray Vladimir Luna CÃ¡rdenas <offray(a)riseup.net> To: pharo-users(a)lists.gforge.inria.fr Hi, I have my outliner buggy mockup on local cache, and I would like to share the code and point to it online using SmalltalkHub for my questions. I have followed the chapter on Source code management with Monticello y PBE2, and it says that you can have your code on SmalltalkHub, but says nothing about how to sync from local cache to your SmalltalkHub account. Can some one could point me the way to do it? Cheers, Offray

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