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

How to use uFFI with String
by horrido June 7, 2017

June 7, 2017

There is shockingly very little documentation on how to use uFFI. In particular, I have the following situation... A shared C lib has the following function: void get_machine(char *machine) { uname(&uname_s); strcpy(machine, uname_s.machine); } It copies the content of a string value into the buffer passed to it (char *machine). I want to call this function from Pharo, thus: buffer := String new: 64. self ffiCall: #( void get_machine(String buffer) ). The buffer never receives the string value (it just contains the 64 initiialized spaces). Clearly, I'm misunderstanding the proper mechanism for doing this. [There are other functions in the shared C lib that work fine, such as: uint get_uptime() { sysinfo(&info); return info.uptime; } Returning integers or floats is no problem. But passing arguments by reference seems to be verboten.] -- View this message in context: http://forum.world.st/How-to-use-uFFI-with-String-tp4947890.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Bloc/Brick/Spec
by Brad Selfridge June 6, 2017

June 6, 2017

I'm confused. I see the latest news and documentation about Bloc. Is Brick now dead and Bloc the default? I thought Brick was a layer on top of Bloc and Spec was layer on top on Brick? What is the direction now? Brad Selfridge ----- Brad Selfridge -- View this message in context: http://forum.world.st/Bloc-Brick-Spec-tp4949591.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Morphic or forking bug?
by horrido June 6, 2017

June 6, 2017

I have a puzzling bug. I've narrowed the scenario down to this code: CrankyÂ»initA a := ((StringMorph contents: '####') color: Color white) position: (0@0). m addMorph: a CrankyÂ»initialize f := Form fromFileNamed: 'hot_air_balloon_mysticmorning.jpg'. m := ImageMorph new. m form: f. self initA. m openInWindowLabeled: 'Cranky'. delay := (Delay forSeconds: 5). [ [ true ] whileTrue: [ a contents: 0 asString. delay wait ] fork I can run this application for hours and hours with no problem. However, if I run it for a while and then close the application and then save/exit the image, the next time I start the image, there is some likelihood it will crash dump. The probability is something like 5-10%. Interestingly, if I remove the statement... a contents: 0 asString. from the infinite loop, I've not been able to replicate the crash. Is there something wrong with the way I'm updating the contents of the StringMorph? -- View this message in context: http://forum.world.st/Morphic-or-forking-bug-tp4948727.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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[ANN] Pharo Consortium New Bronze Member: Palantir Solutions
by Marcus Denker June 6, 2017

June 6, 2017

The Pharo Consortium is very happy to announce that Palantir Solutions has joined the Consortium as a Bronze Member. About - Palantir Solutions: https://www.petrovr.com - Pharo Consortium: http://consortium.pharo.org The goal of the Pharo Consortium is to allow companies and institutions to support the ongoing development and future of Pharo. Individuals can support Pharo via the Pharo Association: - http://association.pharo.org

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Creating a BaselineOf from a ConfigurationOf>>#baselineXyz:
by Sean P. DeNigris June 6, 2017

June 6, 2017

I'm trying to write a rewrite rule, but can't quite get it. I first want to remove `spec blessing: #baseline.` I tried the following with no effect: RBParseTreeRewriter new replace: '`@expr blessing: `#lit' with: ''; executeTree: methodTree; tree. NB: If I try to edit the expression instead of remove, by passing something like '`@expr assert: `#lit' for #with:, it works What am I missing here? Thanks! ----- Cheers, Sean -- View this message in context: http://forum.world.st/Creating-a-BaselineOf-from-a-ConfigurationOf-baseline… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Analyzing Fuel Problem
by Sean P. DeNigris June 6, 2017

June 6, 2017

I had an object graph that was pulling in all sorts of unrelated classes when serialized with Fuel. I was trying to find the offending object, and came up with the following: ``` (FLAnalyzer newDefault analysisFor: root) clusterization globalsBucket ``` This worked, but I was wondering if that's "the right way" to do it... Thanks. ----- Cheers, Sean -- View this message in context: http://forum.world.st/Analyzing-Fuel-Problem-tp4949104.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Slant question
by john pfersich June 6, 2017

June 6, 2017

Slant has a question/poll out there It's at https://www.slant.co/topics/25/~best-programming-language-to-learn-first?ut… Let's pile on it! Sent from my iPhone

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Re: [Pharo-users] [Pharo-dev] GSoC Week 3 update - Enhancing Pharo Command Line
by Ben Coman June 6, 2017

June 6, 2017

On Thu, Jun 1, 2017 at 5:06 PM, Rajula Vineet <Vineet.Reddy(a)iiitb.org> wrote: > Hi all, > > It has been about three weeks, I started working on my GSoC project. The > first task I am working on is the new implementation for Current Working > Directory. I have written the new implementation. Currently, I am testing > the new code. Will soon share the work here. > Meanwhile, for the week three, I have written a blog post > <https://vineetreddy.wordpress.com/2017/05/29/cross-platform-with-pharo/> > on OSPlatfrom. Please do take a look and give your feedback. > > Thanks, > Rajula > > > Hi Rajula, Great to see an article on this subject. Probably its at a good level for pharo-users mail list as well, so I've copied there. Don't worry about the limited response. Many in pharo-dev probably know this subject well. It is still good to have it laid out like you did for newcomers to google when they need to know. cheers -ben

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XPath has unresolved dependencies
by Henrik Nergaard June 6, 2017

June 6, 2017

Hi, Loading XPath from the catalog browser into the latest image raises a warning that there are unresolved references, and that the package depends on the following classes: XMLHighlighter, XMLHighlighterDefaults, GLMXMLHighlighterTextStylerDecorator. The regular XPath works fine ignoring the warnings, but inspecting an XML document and clicking the XPath pane gives an error. Best regards, Henrik

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Saving selected changes in Monticello
by Andreas Sunardi June 5, 2017

June 5, 2017

I have a half done changes in my image, but I need to distribute the other changes that are done. I thought I was going to do this all at once, but now I realize I should split this into 2 commit versions. Is there a way in Monticello to say save my changes, but not this and that changes? I can't seem to find it nor in books. How do people deal with this situation? -- Andreas Sunardi

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