December 2016 - Pharo-users

[ANN] Pharo Sprint First half 2017
by Marcus Denker Jan. 10, 2017

Jan. 10, 2017

Hi, As this year, there will be again âPharo Sprintsâ next year. At these dates we meet (virtual or real) to work on boring (or complex) issues together: Jan 27 Mar 3 Mar 31 Apr 28 May 26 Jun 30 Local sprints: - University of Chile (DCC). Not January, but likely the other dates - Inria Lille: All - Remote: All. We will try to improve remote sprint experience next year! - The sprints will be added to https://association.pharo.org/events Marcus

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Design Challenge: metrics missing value...
by stepharong Jan. 10, 2017

Jan. 10, 2017

Hi dear great OO designers Here is a little challenges for your brainy souls :) In Moose when we compute metrics it may happen than a tool (often external to pharo) does not compute a metrics and when we request it in moose we check and often we return a not so good -1. I'm trying to brainstorm on a solution - first may be the simplest way is to not invoke a metrics when it is not computed. But it means that we should know it and that we should have a registration mechanism. After all this is probably the best solution. - Second we were thinking to use exception but when we have multiple entities missing one metrics.... I have serious doubts. - Second I was thinking about having the following behavior testCollect | uarray collected | uarray := UniformOrderedCollection new. uarray add: 10. uarray add: 20. uarray add: (MissingValue discarding). collected := uarray collect: [ :each | each ]. self assert: collected size equals: 2. testDo | res uarray | uarray := UniformOrderedCollection new. uarray add: 10. uarray add: 20. uarray add: (MissingValue discarding). uarray add: 40. res := 0. uarray do: [ :each | res := res + each ]. self assert: res equals: 70. testCollectDefaulting | uarray collected | uarray := UniformOrderedCollection new. uarray add: 10. uarray add: 20. uarray add: (MissingValue default: 33). collected := uarray collect: [ :each | each ]. self assert: collected size equals: 3. self assert: collected third equals: 33 I basically started to implement do: aBlock "Refer to the comment in Collection|do:." 1 to: self size do: [:index | (self at: index) toDo: aBlock on: self] collect: aBlock "Evaluate aBlock with each of the receiver's elements as the argument. Collect the resulting values into a collection like the receiver. Answer the new collection." | newCollection | newCollection := self species new. self do: [ :each | each toCollect: aBlock on: newCollection ]. ^ newCollection and DiscardingValue >> toCollect: aBlock on: aCollection "discard computation" ^ self Object >> toCollect: aBlock on: aCollection ^ aCollection add: (aBlock value: self) So I imagine that you see the design and I wanted to get your point of view. -- Using Opera a kind of bad mail client but far better than thunderbird

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Slashdot Submission
by horrido Jan. 3, 2017

Jan. 3, 2017

Slashdot submission <https://slashdot.org/submission/6609431/techbeacon-article-is-making-a-brea…> I'm trying to get my TechBeacon article on Slashdot. If I'm successful, this could be the BIGGEST win in my Smalltalk campaign, my Battle of Austerlitz <https://www.britannica.com/event/Battle-of-Austerlitz> . Please, please, please, upvote the submission. Slashdot has to be convinced to publish my story and *they look at the number of upvotes*. Thanks, Richard -- View this message in context: http://forum.world.st/Slashdot-Submission-tp4928235.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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A Suggested Promotion
by Richard Eng Jan. 1, 2017

Jan. 1, 2017

I have a suggestion for future Smalltalk advocates... The advent of Pi Zero last month is an interesting opportunity. This is a very, very cheap Raspberry Pi. Anyone can afford it. I'm thinking of kids, in particular. What if we could get kids to delve into Squeak or Pharo (Squeak is better optimized for Raspberry Pi) via the Pi Zero? A competition could be set up in various countries, such as Canada, Britain, Australia, Japan, etc., where the best student submission for a Smalltalk-based Pi Zero application would win a small scholarship prize (say, $500). A panel of judges in each country would decide the winner. The contest would be much less ambitious than my now-defunct Canadian Smalltalk Competition <https://www.kickstarter.com/projects/1520902870/canadian-smalltalk-competit…> (CSC). Less control (no real need to prevent cheating). Easier to raise the prize money. The nice thing is that it would be a multi-national promotion (it's tough getting a national school competition like CSC going in other countries). Of course, because it's less ambitious, we can expect to reach fewer kids. Instead of thousands, probably more like hundreds. I could be totally wrong on this; I could be totally surprised! I might even come out of retirement <https://medium.com/@richardeng/today-is-the-first-anniversary-of-smalltalk-…> to offer some creative services (eg, promotional graphics, websites, etc.). ð Anyway, it was just an interesting thought I had. Don't know if it stands up to scrutiny. Cheers, Richard

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What can we look forward to in 2017?
by horrido Jan. 1, 2017

Jan. 1, 2017

Fellow Pharoers: What is the most exciting development in 2017 to look forward to? I'm asking for things to put into the end-of-year post in my "Make Smalltalk Great Again!" campaign. Thanks. -- View this message in context: http://forum.world.st/What-can-we-look-forward-to-in-2017-tp4926791.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Thank you and a Happy Pharo Year 2017
by Volkert Jan. 1, 2017

Jan. 1, 2017

Dear Pharo Community, i would like to thank you for all the work and effort to push Pharo forward. Pharo is getting better and nicer from day to day. It is hard work and the hard work will hopefully never end, because then Pharo is a success ... I am using Pharo since 2012, mainly for prototyping my ideas with Roassal, NeoCSV, NeoJSON and Zn in the domain of knowledge management and enterprise architecture. I am not a power or full-time user nor i am a Pharo expert (so i think, i represent some of the Pharo Users today). But for my ideas and projects Pharo is the right tool. It is a light-weight, easy to start, easy to learn language and a cool environment. The Pharo Books are really nice. The nicest thing is, that my ideas can easily grow into a simple & nice workbench for interactive data analytics ... but i have more plans with Pharo (Pharo on the server side). My wishes for 2017 and above ... - A stable Pharo 6.0 on a 64bit VM on Linux - A better introduction of the Ecosystem and Core Project around Pharo - Some architecture blueprints of using Pharo in different domains - A growing and more powerfull community - A successfull killer application ... - A growing company backing ... - ... Thank you and a Happy Pharo Year 2017 Volkert

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Mutter system news
by Charlie Robbats Dec. 31, 2016

Dec. 31, 2016

Hi! Here's the master plan, always malleable; if anyone sees something interesting to dive into, you are welcome. Future Features --- 0 - fix vector corruption through pbeStorage 1 - java/squeak interoperability 2 - FEC-RS testing/repair 3 - define QR-coded PBE identity 4 - switch to SHA256/scrypt PBE for identities 5 - porciniz 6 - DNS/meta layer injection 7 - stack hacking/network discovery/graphing/routing 8 - blockchain 9 - support non-secret finite field key exchange ("Whisper-2")-Oops/add dataEncoder to EncoderData 10 - ratcheting/group join/leave ratcheting 11 - asn1derMetaPragmaEncoder/class autocreation and meta qufrums/qufrum construction/data replication 12 - thermoHarmonics3NeuralRuleGA (PV = nrT + distortion) 13 - Enumify Types, pass named closures, scope projection & protection, detach class/classVariables 14 - autocoerce local eventual calls to immediate sends with reactor pipelining 15 - start a Mutter system news website --- Encoder Velocities: DBL_AESede/asn1der: 100 KB compressed data chunks received: 100 send time: 1096 ms, rate: 73 Mbs. receive time: 1096 ms. rate: 73 Mbs. DBL_AESede/bytes: 100 KB compressed data chunks received: 100 send time: 1094 ms, rate: 73 Mbs. receive time: 1095 ms. rate: 73 Mbs. DBL_AESede,json: 100 KB compressed data chunks received: 10 send time: 2107 ms, rate: 4 Mbs. receive time: 2107 ms. rate: 4 Mbs. ---

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webcam images for image processing
by dyfroedd Dec. 30, 2016

Dec. 30, 2016

Hi I'm fairly new to SmallTalk and so impressed with the programming style as it helps me visually understand how the classes are interrelated etc. I would love to use SmallTalk (Squeak or Pharo) for some image processing. I can create my own processing methods and kernels but have had problems accessing the images from a webcam. I have stumbled at this most basic step. Can anyone help me (I am new to SmallTalk) to access a webcam on a mac please? I have read various intros into SmallTalk (Squeak and Pharo) but doing something really useful like basic image processing is still a hurdle for me in SmallTalk. Alternatively I can use C++ (and OpenCV) to access and process images and use smalltalk to build a GUI but that would defeat the purpose of me trying to use SmallTalk to begin with. I appreciate your help. -- View this message in context: http://forum.world.st/webcam-images-for-image-processing-tp4928374.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Merry Christmas
by Dimitris Chloupis Dec. 29, 2016

Dec. 29, 2016

Merry Christmas pharoers I wish happiness , health and unending desire for creative with the excitement of a kid

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PillarHub SignIn
by Udo Schneider Dec. 29, 2016

Dec. 29, 2016

All, I just tried to login to my PillarHub Account to discover that the SignIn Service (Mozilla Persona) was shut down - hence no chance to login anymore. Any pointers? CU, Udo

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