- Pharo-users - lists.pharo.org

Re: [Pharo-users] [squeak-dev] Named serial port bug and how to contribute
by Nicolai Hess Nov. 30, 2018

Nov. 30, 2018

Good to know! Am Fr., 30. Nov. 2018 um 02:25 Uhr schrieb Ricardo Moran < richi.moran(a)gmail.com>: > Hi, > > I think I found a bug with the named serial ports in windows. > I can open a named port without problem the first time but if I close it > and try to open it again it fails until I restart the image. This doesn't > happen with numeric ports. I could reproduce this bug in both Squeak5.2 and > Pharo6.1 (both using windows 8.1). > > I think the problem is that SerialPort>>#primClosePortByName: calls the > "primitiveSerialPortCloseByName" but I couldn't find this primitive > anywhere in the SerialPlugin source ( > https://github.com/OpenSmalltalk/opensmalltalk-vm/blob/Cog/src/plugins/Seri…) > So I'm guessing that the port is never properly closed. > > I added the missing primitive (find attached) and recompiled the vm, and > now it seems to work. So my question is: how can I contribute this small > fix? Should I commit to the VM Maker Inbox repository? > > Thanks, > Richo > >

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UFFI and opaque(ish) types
by Alistair Grant Nov. 30, 2018

Nov. 30, 2018

How are opaque(ish) types normally handled in UFFI (or FFI)? E.g. if I want to use libstuff which defines the following structure: struct stuffstruct { typeA a; typeB b; } stufftype; I might know they're integers, but not the size, signed vs. unsigned, etc. The definitions of typeA and typeB are buried in multiple layers of header files, dependent on #if tests, can be different sizes on different platforms (e.g. Linux vs. MacOS), etc.? Is this documented somewhere? Thanks, Alistair

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Lambda World 2018 - What FP can learn from Smalltalk by Aditya Siram
by Jimmie Houchin Nov. 30, 2018

Nov. 30, 2018

Hello, Interesting video using Pharo for presenting its points. https://www.youtube.com/watch?v=baxtyeFVn3w Wondering if anybody else has seen this video. What can be learned from this outside perspective. He is mostly positive about Pharo and is using it as an example of things he would like to see in his world. He does say that Pharo's GC is not good. Thoughts. Jimmie

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Problems with Firmata & Arduino UNO Clone
by William L. Cleveland Nov. 29, 2018

Nov. 29, 2018

I have been unsuccessful in using an Arduino board with Pharo 6.1(32bit) and the Firmata package. The board is an Arduino Uno clone (ELEGOO UNO R3). The board appears to work fine with the Arduino IDE, which was tested with the BLINK program. The Standard Firmata Library appears to have been successfully uploaded to the board using the Arduino IDE. COM ports have been closed using SerialPort allInstancesDo: [:port|port close]. On Windows 10, SerialPort inspect shows that ports are closed. However, firmata := Firmata onPort: âCOM3â baudRate: 576000 failed due to failure to open COM3. The serial port name was obtained from the Arduino IDE Tools menu. The board choice was âArduino Unoâ. In MacOS 10.11.6, the same code generated a Cannot open comport message. Independently of Firmata, the following line of code SerialPort allInstancesDo: [:port| port close] generated the following error message: âInstance of BlockClosure did not understand #SerialPort. The same code worked fine in Windows. I am wondering if the SerialPort code in Pharo6.1 is sufficiently robust for a nonexpert programmer like myself, who only occasionally writes code for his own use. Previously, I wrote an application for a robotics project in 2008 using VisualWorks and the DLL&CConnect tool, which was quite successful. No more coding until just recently, when I started using Python. Would like to go back to Smalltalk if it is sufficiently robust. Any help would be appreciated. Lou Cleveland

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[ANN] Teapot was moved to GitHub
by Attila Magyar Nov. 29, 2018

Nov. 29, 2018

Hi, I just want to let you know that the source code of Teapot was moved from Smalltalkhub to GitHub. The new repository is located at: https://github.com/zeroflag/teapot <https://github.com/zeroflag/teapot> Attila -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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Re: [Pharo-users] [Pharo-dev] [Ann] TaskIt v1.0
by Santiago Bragagnolo Nov. 29, 2018

Nov. 29, 2018

Hi Norbert! We don't have yet implemented any nor all combinations. I will add it to the list of things to do for next release. Looks like a simple and useful thing to have. (Or if you have already something I wouldn't mind to integrate it) Thanks. Santiago El jue., 29 de nov. de 2018 17:36, Norbert Hartl via Pharo-users < pharo-users(a)lists.pharo.org> escribiÃ³: > Great, thanks! > > Does TaskIt include implementations for combining futures such as the ALL > and the ANY futures which resolve either when all or one future resolves? > From the documentation it looks that rather not. > > Norbert > > > Am 29.11.2018 um 15:29 schrieb Santiago Bragagnolo < > santiagobragagnolo(a)gmail.com>: > > Hi everybody :). > > I am happy to announce TaskIt v1.0. > > In this version we add some new features, passed over the red tests and > clean up some dead code. And did a pass in the documentation > > A bit from the DOC > Downloading > > Current stable version of taskit can be downloaded using metacello as > follows: > > Metacello new > baseline: 'TaskIt'; > repository: 'github://sbragagnolo/taskit'; > load. > > If you want a specific release such as v1.0, you can load the associated > tag as follows > > Metacello new > baseline: 'TaskIt'; > repository: 'github://sbragagnolo/taskit:v1.0'; > load. > > Otherwise, if you want the latest development version, take a look at the > development branchs and load the latest: > > Metacello new > baseline: 'TaskIt'; > repository: 'github://sbragagnolo/taskit:dev-1.1'; > load. > > > <https://github.com/sbragagnolo/taskit/blob/master/README.md#major-features>Major > Features > > - Actors (ActIt) > - Configuration Profiles > - Service > > > Check specially the configuration profiles. The default profile usage is > #development, which sets up the environment for debugging exceptions in a > process. > > I want to thank a lot to the contributors, Guillermo Polito Max Leske > and Daniel Sasu. > I want as well to thanks the users, specially to those that bring me > feedback (blames and ideas) in person (Esteban, Pablo) or through the > different channels (Holger Freyther, Juraj Kubelka, Philippe Back). > > > I want also to apologise the delay of my responses on the issue board :) > (Really, sorry). I am constantly using TaskIt in other projects, but much > times I cannot do it my priority. > > > thanks a lot, > > Santiago Bragagnolo. > > > > > > > > > > >

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[Ann] TaskIt v1.0
by Santiago Bragagnolo Nov. 29, 2018

Nov. 29, 2018

Hi everybody :). I am happy to announce TaskIt v1.0. In this version we add some new features, passed over the red tests and clean up some dead code. And did a pass in the documentation A bit from the DOC Downloading Current stable version of taskit can be downloaded using metacello as follows: Metacello new baseline: 'TaskIt'; repository: 'github://sbragagnolo/taskit'; load. If you want a specific release such as v1.0, you can load the associated tag as follows Metacello new baseline: 'TaskIt'; repository: 'github://sbragagnolo/taskit:v1.0'; load. Otherwise, if you want the latest development version, take a look at the development branchs and load the latest: Metacello new baseline: 'TaskIt'; repository: 'github://sbragagnolo/taskit:dev-1.1'; load. <https://github.com/sbragagnolo/taskit/blob/master/README.md#major-features>Major Features - Actors (ActIt) - Configuration Profiles - Service Check specially the configuration profiles. The default profile usage is #development, which sets up the environment for debugging exceptions in a process. I want to thank a lot to the contributors, Guillermo Polito Max Leske and Daniel Sasu. I want as well to thanks the users, specially to those that bring me feedback (blames and ideas) in person (Esteban, Pablo) or through the different channels (Holger Freyther, Juraj Kubelka, Philippe Back). I want also to apologise the delay of my responses on the issue board :) (Really, sorry). I am constantly using TaskIt in other projects, but much times I cannot do it my priority. thanks a lot, Santiago Bragagnolo.

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Uncle Bob's package design metrics
by Rafael Luque Nov. 29, 2018

Nov. 29, 2018

Hi, Recently I've reread the chapter about "Package Design Principles" from the Robert C. Martin's "Agile Software Development" book and immediately find myself playing within the reflective and moldable Pharo's environment. I've built an small library DMMetrics that you can find at GitHub: https://github.com/osoco/dm-metrics This is a still very rough and work-in-progress, but I hope to be able to use it in my own projects to get some insights about my package design. Besides my unknowns about Roassal or Renraku, I've also found more conceptual difficulties trying to adapt some metrics as were originally defined by Robert Martin to Pharo's idiosyncrasies. For instance, for measuring the abstraction level of a package, the "Abstractness" metric is defined as Na/Nc; where Na is the number of classes in the package and Nc represents the number of abstract classes in the package. In a language like Java Nc refers to the number of interfaces and classes with at least one abstract method. In Pharo I'm counting the number of classes with methods sending "self subclassResponsibility", but I suspect that this way of measuring is resulting in abstractness values lower than it should be. Maybe I should take into account other Smalltalkish idioms that also contribute to the class abstraction level. Any idea in this way would be of great help. Thank you!

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how to write this without a if then
by Roelof Wobben Nov. 28, 2018

Nov. 28, 2018

Hello, Yesterday I had a talk with luc frabresse about using if then. He said if I understand it right, Its the best to not using a if then or a ifTrue/ifFalse. Can anyone help me figure out how to rewrite this project so I will not use the ifTrue in the basement function. my code so far can be found here : https://github.com/RoelofWobben/AOC2015 Roelof

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Pharo 7 - RFB
by Sanjay Minni Nov. 27, 2018

Nov. 27, 2018

Where can I find RFB for Pharo 7 ----- --- Regards, Sanjay -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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