October 2017 - Pharo-dev - lists.pharo.org

FFIIntegerTypes inheritance hierarchy
by Ben Coman Nov. 28, 2017

Nov. 28, 2017

I'm looking through the keyhole at something new to me, so maybe this is off base, but looking at the inheritance hierarchy... FFIIntegerType FFIUint16 FFIUint16 FFIUInt32 FFIInt32 FFIUint64 FFIInt64 FFIUint8 FFIInt8 I'm curious... why the all the Ints inherit from the UInts? Each of those classes has the same two methods #basicHandle:at: and #basicHandle:at:put. So the Int subclasses fully override the superclass methods. So there in no inherited behaviour on the instance side. On the class side, I see #externalTypeSize is inherited by the Ints, but evaluating... FFIIntegerType allSubclasses collect: [ :class | class externalType byteSize -> class externalTypeSize ] produces... 4->4 2->2 4->4 8->8 1->1 2->2 4->4 8->8 1->1 So naively the extra inheritance level seems unnecessary and perhaps having... FFIIntegerType class >> externalTypeSize ^ self externalType byteSize would allow the hierarchy to be flattened. Maybe not a great benefit, except to avoid the next person wondering the same thing :P Also, it is surprising that that FFUInt64 uses #signedLongLongAt: rather than #unsignedLongLongAt: . This seems on-purpose rather than accidental since its inherited by FFIInt64, so it seems there is something interesting to learn here that would benefit a method comment. cheers -ben

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bloc readiness for a simple mindmap
by Peter Uhnak Nov. 26, 2017

Nov. 26, 2017

Hi, I wanted to ask about Bloc: 1) how stable is the API? e.g. if some overhaul changes to unify/whatever are planned 2) I saw in the techtalk that you can align elements (to center, bottom, ...), however is that possible with lines? Lines have to rotate, morph shape, etc. 3) Are non-straight lines possible? (e.g. bezier, arc) The idea for me is to make a simple mindmap - elements with some text, icons, math symbols inside - connectors (non-straight lines) between elements To me (apart from the lines) it seems like it should be already doable. Also either my (Morphic) Pharo is really slow, or Bloc (in the video) is superfast (everything is happening instantly). Thanks, Peter

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Layout in bloc
by Alexandre Bergel Nov. 25, 2017

Nov. 25, 2017

Hi! I am working on a popup support in Bloc and I am facing a problem. Consider the following code: -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= space := BlSpace new. space root layout: BlLinearLayout horizontal. 10 timesRepeat: [ | e | e := (BlRectangle new extent: 20 @ 20) asElement. e background: Color random. space root addChild: e ]. space root children withIndexDo: [ :e :index | e translateBy: (index * 30) @ 10 ]. space root children do: [ :e | e addEventHandler: (BlEventHandler on: BlMouseEnterEvent do: [ :evt | | txt | txt := BlText new position: evt position; fill: Color red; text: 'Hello World'. e parent addChild: txt ]). ]. space show -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= If you uncomment the second line (âspace root layout:â¦â), then the string hello world is added text to the element in which the mouse enter. With the layout, the string is added at the end of the line. I like very much the idea of having the layout applied when elements are added (even I suspect we may have scalability issues very soon), but in that situation, this is not wished. Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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Stuck trying to contribute
by Sven Van Caekenberghe Nov. 19, 2017

Nov. 19, 2017

Hi, Sorry, but I am person 237 trying to contribute to Pharo 7 the new way. I was following https://github.com/guillep/PharoIntegrationProcess/wiki/Contribute-a-fix-to… and I got stuck just before step 3, after trying to do "That will calculate the differences between the checked-out branch and your image, show you the tree with the differences and let you commit (and push)". Specifically, the 'and push' fails. $ sw_vers ProductName: Mac OS X ProductVersion: 10.13 BuildVersion: 17A405 $ curl get.pharo.org/70+vm | bash ... $ ./pharo-ui Pharo.image I now have the following setup, which is correct I think. I can commit on my local branch (left button), but when I try to do the 'and Push' (right button), things hang after I enter my credentials. Locally, I see $ git status On branch 20613-Improve-some-UUID-comments nothing to commit, working tree clean with the new code already committed $ cat src/Network-UUID.package/UUID.class/class/new.st instance creation new "Create and return a new UUID" "self new" ^ (self new: 16) What did I do wrong ? How do I proceed ? Sven

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Re: [Pharo-dev] [Pharo-users] why is adding instance variables so slow?
by Tudor Girba Nov. 17, 2017

Nov. 17, 2017

Hi, Please letâs move this discussion on pharo-dev. And keep going :) Cheers, Doru > On Apr 14, 2017, at 12:09 PM, Denis Kudriashov <dionisiydk(a)gmail.com> wrote: > > > 2017-04-14 11:09 GMT+02:00 tesonep(a)gmail.com <tesonep(a)gmail.com>: > Hi, I think the problem was not clearly explained. This is the scenario that is problematic. > This scenario does not happen in the new Spur implementation of forwarding, but I think is happening in the old one. > > 1. You have, let's say 3 instances of ClassA. > 2. You add a new instance variable to ClassA. It produces > 2a. A new ClassAv2 is created with the instances variables of ClassA and the newone > 2b. 3 Instances of ClassAv2 are created > 2c. The values of the instance variables of ClassA are copied to the ones in ClassAv2 (the ones missing are left in nil). > 2d. The 3 instances of ClassA are becomed forward to the 3 instances of ClassAv2 > 2e. The ClassA is becomed forward ClassAv2 > > I still not see why my example not reflects all these steps. I checked also scenario with class becoming: > > c1 := Class1 new. > c2 := Class2 new. > c1 becomeForward: c2. > Class1 becomeForward: Class2. > Class2 allInstances "=>#(aClass2)" > > It also works in Cog -- www.tudorgirba.com www.feenk.com "What we can governs what we wish."

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slow Pharo downloading and Travis
by Peter UhnÃ¡k Nov. 17, 2017

Nov. 17, 2017

Hi, over the past week+ downloading the latest Pharo 6 version has been extremely slow -- 5+ minutes to download the zip. a) is there a known reason for this? b) is there a way to know what is the current latest image of particular Pharo without downloading it? Could we include e.g. "latest.txt" file into http://files.pharo.org/image/60/ (and /70/ etc) that will include the latest image number? Because then we can cache on travis side which could significantly reduce the demands on pharo infrastructure. Peter

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Zinc and Zodiac - Synching/Contributing
by Torsten Bergmann Nov. 9, 2017

Nov. 9, 2017

Hi Sven, for Zinc there is a new issue: 1. Zinc is using #asBytesDescription. It should not be used as it is deprecated https://github.com/pharo-project/pharo/pull/401 there is also 2. https://pharo.fogbugz.com/f/cases/20557 which is not yet integrated. I also proposed some simple but necessary cleanups for Zodiac in Pharo 7: 3. Proper categorization in Zodiac-Tests package - to use "test" category instead of "testing" and better group the tests written https://github.com/pharo-project/pharo/pull/355/files Also it looks like the #setUp in Zodiac tests never send a "super setUp". Which should be fixed too. I've noticed that both Zinc/Zodiac are not hosted on STHub. You seem to use your own custom hosting server on http://mc.stfx.eu/Zodiac http://mc.stfx.eu/ZincHTTPComponents as well as github: https://github.com/svenvc/zinc https://github.com/svenvc/zodiac If we just merge the changes from 3. into Pharo 7 they may later be overwritten when synching also Zodiac again as in 2. So how can we contribute from community side to both projects? Should I fork https://github.com/svenvc/zodiac and send a PR to it so that you can integrate? Thanks Torsten

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Why 2017 sizeInMemory = 0?
by Denis Kudriashov Nov. 9, 2017

Nov. 9, 2017

Hi. Question from discord, why: 2017 sizeInMemory = 0 ? Looks like a bug, but maybe there is some reason for this.

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Call for help for stability and rewrite of FreeType
by Stephane Ducasse Nov. 6, 2017

Nov. 6, 2017

Hi all I'm and I guess many of you are fedup about the instability that the FreeType plugin produces. So we need help because clement and esteban are fully booked. We have three options: Does anybody Stef

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[ANNOUNCE] ParrotTalk release/design change considerations
by henry Nov. 5, 2017

Nov. 5, 2017

Hi all, I am happy to announce the release of version 3.5 of ParrotTalk, for Squeak and Pharo, found here: http://www.squeaksource.com/Cryptography/ParrotTalk-zzz.2.mcz It follows this specification: https://github.com/ZiroZimbarra/callistohouse/blob/master/docs/ParrotTalkFr… One item of note, in version 3.5, the system connecting to a server, sending the IWant msg, must know the vatId of the system being connected to. I am considering changing this to version 3.6 by removing one round-trip in messaging. Therefore, these messages would be combined: IWant/GiveInfo, IAm/ReplyInfo. I will keep ProtocolOffered and ProtocolAccepted to allow eLindaSession to support both versions: 3.5 and 3.6. Thoughts please? - HH

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