April 2019 - Pharo-users - lists.pharo.org

is this a valid Smalltalk way
by Roelof Wobben April 13, 2019

April 13, 2019

Hello, Im thinking how to solve this one : https://github.com/exercism/problem-specifications/blob/master/exercises/bo… so I thought because you throw two times for a frame to solve it like this : aCollection withIndexDo: [:index :item | Â Â (if spare) ifTrue: take 3 items out of the score collection and sum them up Â Â (if strike) ifTrue: take 4 items out of the score collection and sum them up. Â Â (if not a spare and not a strike) : ifTrue:Â take 2 items out of the score collection and sum them up. Â Â index := index + 2Â // becauseÂ a frame is always two times a throw Now I wonder if this is a valid smalltalk to do this Roelof

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Re: [Pharo-users] [Pharo-dev] [OT] (slightly) What makes other dialects "enjoyable" for you? (WAS: difference between double dispatch...)
by Mariano Martinez Peck April 13, 2019

April 13, 2019

Hi Esteban, We talk this privately a couple of weeks ago, but I thought it was worth writing again here. As for other IDE's being enjoyable, I can only talk about VASmalltalk. If there is ONE thing I enjoy from it, is the stability. May be ugly, may be too-windows, may be full of menus you don't understand what they do, but it's really rock solid. Pharo has been doing a LOT of progress on so many areas and its expected to decrease a bit on stability. Unless you are Oracle and can hire 100 engineers. So, my small recommendation to you back then was to make at least ONE release (called LTS or whatever) were you just focus on stability and bugs. No new features. No new framework. Just stability. Make it rock solid. Then after that release, you can keep moving forward, but that would give companies and really really stable Pharo to rely on. Best, -- Mariano Martinez Peck Email: marianopeck(a)gmail.com Twitter: @MartinezPeck LinkedIn: https://www.linkedin.com/in/mariano-mart%C3%ADnez-peck/

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Richard Kenneth Eng is NOT Mr. Smalltalk
by Michael Zeder April 12, 2019

April 12, 2019

Dear community, I am a silent follower of this list. Now, I feel urged to speak up not on a technical, but a community matter. Every village deserves it's fool. And a wise man does not feed the troll (i did, and doing it right now, sorry). But if this fool is about to take over a considerable amount of public control, the community has to stand up against it. So, I put this to you: I frequently research on Smalltalk-related topics (computer scientist, try to devote time to open source dev next to my small enterprise). And more and more, I notice that Google search results show very much on top of the result list contributions by a self-appointed "Mr. Smalltalk" aka R.K.Eng. who excels at SEO and flooding social media. While self-initiatives are a thriving force for open communities, in this case: * one individual is hoging credit and applause, without ever having commited a single line of code, putting himself into focus (without having any profound knowledge; to the contrary: he shows a deep ignorance towards "our" and other languages, throwing around dubious advertisment slogans), * ...is throwing around with wrong claims (pulling off any potentially interested developer), * ...is starting pointless flame wars against other programming languages (again: detrimental to our community) * ...is doing SEO to make Google show his own results before FOSS community or sciences pages. * ...is getting traction (and money) for his own ends (publicity for the self-appointed "Mr. Smalltalk") * ...denies community leadership by merit (Pharo core developers do know, what they have created and where they want to go in the future, and which audience we should target, they don't need a clueless person telling them to "get into TIOBE index", just for example) * is claiming credit for the work, others have done, fostering his own publicity (not the interests of Pharo/VisualWorks etc). Here is the Medium thread that made me write this mail to you all. https://medium.com/@michael.z3d3r/who-is-this-self-appointed-mr-9ad9a18676eb https://medium.com/@richardeng/even-people-who-understand-prototypal-inheri… the bottom line of our tedious flame war in a screenshot: PS: a side note on Javascript (with lower S). wether you love or hate this quirky lovechild of Lisp and Self/Smalltalk, telling JS developers they are stupid and that they should abandon powerful Vue.js, for example, in favor of Amber Smalltalk [cudos to Amber devs! great thing!]) is utterly stupid! Every professional Javascript developer, who is trying Smalltalk the first time, because he/she has read in a post of "Mr. Smalltalk", that it is better, will instantly dismiss Smalltalk and be disappointed. I love Smalltalk (certainly more than JS), but it is detrimental, to throw around with these wrong claims (which in the end are only a self-serving, ego-centric, attention-greedy campaign to promote "Mr. Smalltalk" himself, a total newbie, who claims credit for the work of others). My suggestion: This community is open and inclusive. But we should clarify, that if a single individual repeatedly goes against those, who do the actual work, claims credits, insults people, then this person is not fit to be part of this community. It sheds a very bad light onto us. --> If R.K. Eng cannot respect community structure and decisions, we should exclude him officially and publicly take distance from this person. Thank you for your attention. Michael Zeder

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seaside.gemtalksystems.com and ss3.gemtalksystems.com are off-line
by Dale Henrichs April 12, 2019

April 12, 2019

The ISPÂ that is hosting both sites has gone off-line and we are not quite sure what the current status is ... other than that multiple machines are down beyond the machine that is used to host seaside.gemtalksystems.com and ss3.gemtalksystems.com. The host for the glass mailing list is on one of the other machines that has dropped off-line as well. We'll send mail when we have more information ... Dale

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Pharo image crash with Seaside App
by BrunoBB April 10, 2019

April 10, 2019

Hi, Version: Pharo 7.0 OS: Windows 8. Which is the best way to get any error description when the Pharo image crash ? PharoDebug.log - does not have any information stderr - does not have any information Stoping the execution is not working ("Control" + "-") https://stackoverflow.com/questions/24788115/if-my-pharo-image-goes-into-an… The problem is a "self call: WAMyComponent new". ComponentA call ComponentB, then ComponentB call ComponentC, and last (here is the problem) ComponentC call ComponentA again. Is not an infinite loop because this cycle goes only one (well not even one because the last call crash the image). WASession allInstances size. "answer 6" WACache allInstances size. "answer 0" Maybe there is an issue in the call sequence with Seaside but this should not crash the image. Researching on this right now ... regards, bruno -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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tracking pharo environment activity
by Urbieta Matias April 10, 2019

April 10, 2019

Hi, I would like to track the user's activity while he uses pharo. That is, I need to track if the user open a browser, access a given class definition, modify a method, etc. Is there any feature available? if not, what pharo hooks should I consider? Best regards -- Dr. Matias Urbieta LIFIA - UNLP Calle 50 y 150 - 1900 - La Plata - Buenos Aires - Argentina Phone: (+54) 221 4236585

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Slots and Metalink
by Vitor Medina Cruz April 10, 2019

April 10, 2019

Hello, Is it possible to intercept a slot store? I tried with a before metalink into #write:to selector, but it don't seems to work. Should I use another selector? I would like to experiment with ivar change notification, but I don't know what is the better approach. I know I could install a MetaLink in an attribution node, but that seems ankward and I would have to edit the linkage every time my object is changed, isn't true? Regards, Vitor

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difference between double dispatch and the method explains here
by Roelof Wobben April 10, 2019

April 10, 2019

Hello, I just learned double dispatch. And now for the Robot challenge of exercism Tim has pointed me to this article(https://blog.metaobject.com/2019/04/accessors-have-message-obsessio… but I fail to see how the move method looks like in that article. I had a conversation with Tim in the exercism channel and the way he explains it, it looks like double dispatch for me. Am I on the right track or do I oversee something here. Roelof

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Why is it called #keysSortedSafely in Dictionary?
by Tim Mackinnon April 10, 2019

April 10, 2019

Iâm curious why on Dictionary there is #keys and #keysSortedSafely ? Why isnât it just #keysSorted - do we normally provided a keysSortedDangerously? Looking deeper, it seems to duplicate the keys method, so Iâm wondering if this is ripe for some rework. Tim

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Screencasts on Debugger driven development
by stephan April 10, 2019

April 10, 2019

Some work Vincent Blondeau and I have been doing on the Taskbar has inspired me to make some screencasts showing how to do debugger driven development, and take the first steps towards refactoring the TaskBarMorph, driven by tests. Part 1 https://vimeo.com/329317634 Part 2 https://vimeo.com/329368348 Stephan

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