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Esteban's ChangeLog week of 2 October 2017
by estebanlm＠gmail.com Oct. 9, 2017

Oct. 9, 2017

Hello! This is my weekly ChangeLog, from 2 October 2017 to 8 October 2017. You can see it in a better format by going here: http://log.smallworks.eu/web/search?from=2/10/2017&to=8/10/2017 ChangeLog ========= 6 October 2017: --------------- * I released [Iceberg 0.6](https://github.com/pharo-vcs/iceberg/releases/tag/v0.6) ! Most important part of the inclusion of [tonel](https://github.com/pharo-vcs/tonel) as the default file format, but there are a lot of small changes and bugfixes. It will be integrated soon into Pharo 7.0a and the [README](https://github.com/pharo-vcs/iceberg/blob/master/README.md) has instructions to explain you how to update Pharo 6.1 images. 5 October 2017: --------------- * I've been working on release Iceberg 0.6, and we are almost there... but I decided to restore green tests on travis before moving on. Test have been failing since a lot of time as is moment to get back to appropriate software policies :) 3 October 2017: --------------- * I just submited a PR to fix [case: 18849](https://pharo.fogbugz.com/f/cases/18849) to update Metacello to latest version. This will prepare things to integrate Iceberg 0.6. 2 October 2017: --------------- * Finally, I got latest version of Metacello to work on Pharo correctly. It was hard, but I prevailed :) I will schedule it for integration in Pharo 7 too. cheers! Esteban

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Re: [Pharo-dev] Call for Ruby, Python, Java, Javascript Guide to Pharo
by Ben Coman Oct. 9, 2017

Oct. 9, 2017

On Sun, Oct 8, 2017 at 10:19 PM, Peter UhnÃ¡k <i.uhnak(a)gmail.com> wrote: > Comparing languages in a discussion about Pharo vs the rest is vastly >> different, at least to me , from teaching Pharo. >> > > The pdf that Stef posted I wrote for my students (which know Java and C), > just so it is easier for them to compare/grasp the new syntax based on what > they already know. It wasn't/isn't meant as a language comparison in the > sense that one is better than the other. > btw, Have you seen "I Can Read C++ and Java But I Canât Read Smalltalk" by Wilf LaLonde http://carfield.com.hk/document/languages/readingSmalltalk.pdf? I like the side-comments... t.rotate (a, v); //Original t rotate (a, v); //Who needs dot? t rotate a, v; //Who needs brackets? t rotate by: a around: v; //Who needs ambiguity? t rotateBy: a around: v //This is Smalltalk cheers -ben

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Looking for the Pharo merchandising shop
by Stephane Ducasse Oct. 8, 2017

Oct. 8, 2017

Hi guys I know that we can buy cups with the Pharo logo and I'm looking for the shop. Stef

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Non blurry Pharo 6.1 on Windows 10 and 4K display
by phil＠highoctane.be Oct. 8, 2017

Oct. 8, 2017

Just wanted to say that one can have Pharo on a 4K display without blurry fonts. https://i.imgur.com/FDeLFTN.png This requires to use the settings with Large or Huge fonts. And create a shortcut to Pharo.exe with the following settings in the properties of that shortcut: https://i.imgur.com/7G1sEtz.png There are then other issues showing, namely that tools are opening with default extents that are way too small for a 4K screen. Maybe we should detect that or have a command line switch and update all tools so that the extent is multiplied by that factor. The cursor is also tiny, but maybe VistaCursors can help. So, a Hi-DPI screen on Windows 10 is definitely not an issue. My new laptop has such a screen so, I have got an itch to scratch to get legible and usable things on it. Icons are also too small and some items like Spotter "search" placeholder are not respecting the font sizes of the settings. https://i.imgur.com/lIAwdKx.png Anyway, no blur, yay! Check https://www.digitaltrends.com/computing/how-to-adjust-high-dpi-scaling-in-w… for more on those settings. Check Phil

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Reproducible VM Crash using UFFI
by HernÃ¡n Morales Durand Oct. 8, 2017

Oct. 8, 2017

Hi, I ported Nacl (a libsodium wrapper) from the old FFI apicall: format to use the UFFI ffiCall:, but there should be something terribly wrong because is crashing the VM, in both Windows 8.1 and Linux. How to reproduce in Pharo 6.1 Metacello new smalltalkhubUser: 'tonyg' project: 'Crypto-Nacl'; configuration: 'Nacl'; version: #development; load. (Nacl hashString: 'The quick brown fox jumps over the lazy dog') hex This one does deserve a bug entry? Cheers, HernÃ¡n

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Call for Ruby, Python, Java, Javascript Guide to Pharo
by Stephane Ducasse Oct. 8, 2017

Oct. 8, 2017

Hi Dimitri Preambule: If you want to understand why I react like to the other thread: we are ***FIGHTING*** all day long to build a great system and this is not easy and I do not need to know how great are the other systems. If I want to know I can just drop Pharo and go coding in X. No need to have such discussion on PharoDev where we should be concentrated. Now if you and other want to contribute actively to Pharo here is a simple idea. Create one chapter (I will do the editing) similar to this one (you can also modify this one) to explain to a Pythoner, Rubbyist, Javascripter, the syntax and core libraries of Pharo. https://github.com/SquareBracketAssociates/PharoInProgress/tree/master/Java… It was on my todo but I would have to refresh my mind on these languages. Stef

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[ANN] Iceberg 0.6 released
by Esteban Lorenzano Oct. 8, 2017

Oct. 8, 2017

Hi all, I released Iceberg version 0.6. It includes a lot of small tweaks and fixes, but the most important inclusion is tonel file format which aims to replace file tree. What is Tonel? (https://github.com/pharo-vcs/tonel <https://github.com/pharo-vcs/tonel>) Tonel is a file-per-class file format for monticello repositories. Itâs purpose is to reduce the amount of files touched each operation, make the IO faster an compact the repositories database. It has also as an objective to offer an âeasy-to-readâ format, so people wanting to understand a chunk of code will recognise it easily. For testing, I migrated several of my projects to Tonel and Iâve been using it, you can see some as examples: https://github.com/estebanlm/MUDClient <https://github.com/estebanlm/MUDClient> https://github.com/estebanlm/pharo-tonel <https://github.com/estebanlm/pharo-tonel> (this was just an example and it has some minimal errors already fixed) We plan to migrate Pharo development to tonel to address some problems we have: - since it has to read/write a lot of files, IO operations are slow - and even much more slow in Windows - Windows also has a problem with longpaths. Iceberg 0.6 will be integrated to Pharo7 soon :) To update Pharo 6.1, there are instructions in the readme: https://github.com/pharo-vcs/iceberg/blob/master/README.md <https://github.com/pharo-vcs/iceberg/blob/master/README.md> now, if you wan to migrate your projects to Tonel (from FileTree), here is a script you can use: https://github.com/pharo-vcs/tonel/blob/master/MigrateFromFileTree.md <https://github.com/pharo-vcs/tonel/blob/master/MigrateFromFileTree.md> btw, tonel is independent of Iceberg and can be used with plain Monticello (but it is a metadaless format, history will reside on git, not on monticello). cheers, Esteban

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Swimming with the fish imagery
by Ben Coman Oct. 7, 2017

Oct. 7, 2017

"Swimming with the fish" is a catchy phrase that I like which seems to encompass the strength of Pharo's tight development feedback loop that comes from operating in a world of live objects. I had some imagery floating through my head on this I thought worth sharing. Only time for a quick dump, but I hope you can piece it together... In the style of one of those fast paced cartoon product videos... Scene 1: "The development process we all know..." A neutral background with directed arcs in circle "Debug-->Edit-->Compile-->Execute-->" Scene 2: "In most languages... debugging..." Zoom in on Aquarium 1 to show a developer standing outside aquarium window... https://tinyurl.com/PharoSwimWithTheFish-Outside reaching in through quarantine-box-like-gloxes to use telescopic tools to pick up and examine fish at a distance... https://tinyurl.com/PharoSwimWithTheFish-OtherTool until the lightbulb moment... https://tinyurl.com/PharoSwimWithTheFish-Lightbulb Scene 3: "In most languages... editing...." Developer zooms out away from aquarium. It folds up into a tiny box and drops in a bin. Developer zooms in on an architectural drafting table with many drawings with many different but simple flow diagrams on each. Quickly make required edit to flow diagrams. https://tinyurl.com/PharoSwimWithTheFish-OtherEdit Scene 4: "In most languages... compiling..." Drawings pass through a photocopier into a box that is transferred to site supervisor. At an empty flat construction site, supervisor opens box pulling out drawings to review them. Trucks and machines arrive and start building the aquarium at his direction... Two buildings clash when they overlap the same space (compile error). Return to Scene 3 to fix design then rerun Scene 4 through to completion. Scene 5: " In most languages... execution..." Water trucks arrive and pour water into the pool, then more trucks arrive adding the fish. (i.e. initialization and getting to the point of the program you want check again) Scene 6: "In most languages... debugging..." Complete the loop by starting scene 3 again. Scene 7: "In Pharo.... debugging..." Zoom out, over and into Aquarium 2 where a developer is swimming inside the pool... https://tinyurl.com/PharoSwimWithTheFish-Inside http://blog.atlantisthepalm.com/wp-content/uploads/2017/05/different-in-wat… Developer grabs a fish, shifts it aside, lets it go to swim some more, grabs it again, holds it up close to look a small detail. Out of nothing creates a new fish to interact with the first fish. Out of nothing creates some clay and then moulds a new scope-like tool from it to look at the fish differently. Lightbulb moment... https://tinyurl.com/PharoSwimWithTheFish-Lightbulb "In Pharo.... editing..." Developer peers into brain of fish seeing many neurons, picks one out which shows as simple flow diagram, makes a change to it. "In Pharo.... compiling..." Laser beam quickly scans the simple flow diagram and packs neuron back into the fish. "In Pharo.... execution..." Fish swims off. "In Pharo.... debugging..." Developer grabs another fish... Scene 8: Zoom out to show both aquariums. In Aquarium 1, repetitively run through Scenes 2 through 6 In Aquarium 2, repetitively run through Scene 7. Play at 10x original speed. Fade in a "Debug-->Edit-->Compile-->Run-->" over each aquarium, showing synced state transitions. Fade in "Come swim with the fish with Pharo" Fade in "It will change the way you think about programming" cheers -ben

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slots & first class relations
by Ben Coman Oct. 7, 2017

Oct. 7, 2017

Just wondering what was the status of Slots regarding "first class relations" described in "Flexible Object Layouts" - and availability of examples/tutorials. https://core.ac.uk/download/pdf/51216612.pdf cheers -ben

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Pulling Web XML data into spreadsheet
by Ben Coman Oct. 7, 2017

Oct. 7, 2017

Unfortunately due to IT lock down I cannot use Pharo at work, but the first 1:30 of video [1] demonstrates a nice use case to aim for DataFrame + FastTable. Similar functionality in Pharo would make a compelling video, to the degree it may even be worthwhile including this out-of-the-box to make a great "first ten minutes" experience for newcomers, or at least a one-click install from the catalog (linked from the help file). What parts do we have for putting together something like this? [1] https://www.youtube.com/watch?v=6H7tBL97orE cheers -ben

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