Squeak-dev June 2023

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23 participants
127 discussions

Some questions and comments regarding notation of floats and scaled decimals
by christoph.thiede＠student.hpi.uni-potsdam.de 02 Jul '23

02 Jul '23

Hi all, this is a rather loose collection of some observations and questions that came to my mind while exploring floats and scaled decimals. Comments and patches appreciated. 1. Exponential notation in radix floats 13r0.1e2 --> 13.0 14r0.1e2 --> 14.0 15r0.1e2 --> 0.12948148148148148 "How can I specify the exponent for bases where e is treated a digit? Should this be possible in literal syntax?" 2. Exponent letters "Answer to myself re 1:" 15r0.1q2 --> 15.0 "Wow! Why is this supported in SqNumberParser>>#exponentLetters? I have seen this nowhere else. And just to uphold my question from above, think about this:" 26r0.1q2 --> 26.0 27r0.1q2 --> 0.0728039424884418 3. Limited precision in scaled decimals SpaceTally new spaceForInstance: 0.10s2 depth: 2. --> 48 SpaceTally new spaceForInstance: 0.1010101010101010101010101010101010101010101010101010101010101010s2 depth: 2. --> 128 "If not here, when is precision lost at all? Should the number parser truncate this? How can I compact my existing scaled decimal instances based on their scale?" 4. Scale in radix notation "Follow-up question for 3., so I could not really test this:" 2r0.10101s1 --> 0.6s1 2r0.10101s2 --> 0.65s2 "I would rather have expected 0.5s1 and 0.5s1 here. So, the current behavior seems to be that the scale always refers to the decimal representation of the number even though the literal is written in a different base? Does this actually make any sense or should we disallow this combination of radix and scale? Or can we translate the scale to between the numeral systems, i.e., (sourceBase ** sourceScale - 1 log: targetBase) ceiling?" 5. Printing scaled decimals in base 1s printStringBase: 2 --> error: SubclassResponsibility: My ScaledDecimal subclass should have overridden printOn:base: "Seems to be missing yet..." 6. Beyond base 36 "This is clear:" 35 printStringBase: 36 --> 'Z' 36rZ --> 35 "But then..." 36 printStringBase: 37 --> '[' 37r[ --> syntax error: a digit between 0 and [ expected ->[ "D'oh! And the error message does not really make it clearer. :) Should we disallow radix base 37 and larger? Or can we just make it so that 44r~^é evaluates to 77263?" Best, Christoph --- Sent from Squeak Inbox Talk

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RFB/VNC via web sockets
by Tim Rowledge 30 Jun '23

30 Jun '23

I'm trying to make sense of how one might use vnc via a web browser; evidently it is meant to be possible with packages like 'noVNC'. The official doc is not exactly fabulous so it's taking me more effort than it really should to see what it meant to happen, but I dare say that will eventually work out. Pointers to a good explanation would be appreciated. The more directly squeak relevant question is whether anyone has made our RFB server work to display within a web browser. It seems like it ought to be doable, it's just sending bits down sockets after all. The real prize would be finding a way to use the same port that a Seaside connection is using as opposed to having to find a 59XX port that is available, configure port forwarding, and all the other faffing about. You have a connection! Use it you stupid computer! Even doing things the clumsy manual way proved how incredibly useful it could be to get RFB access to a headless server the other side of the continent. Imagine having a convenient way to get that within Seaside. Maybe even imagine making a system that can VNC a single Morph, allowing say, a HierarchyBrowser to be share for a quick debug, or a BlobMorph. tim -- tim Rowledge; tim(a)rowledge.org; http://www.rowledge.org/tim When flying inverted, remember that down is up and up is expensive

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LaTeX parser for Squeak?
by christoph.thiede＠student.hpi.uni-potsdam.de 28 Jun '23

28 Jun '23

Hi all, just a curious question: Does anyone know about a simple LaTeX parser for Squeak/Smalltalk? I found a few related projects such as WysiTeX and LatexMorph on the list, but the former seems not to be publicly available nor already ported to Squeak and the latter appears not to provide a parser on its own. My goal would not be to implement a full-fledged typesetter/PDF generator but just to extract readable simplified richtext with domain-specific knowledge and a lot of trade-offs. Best, Christoph --- Sent from Squeak Inbox Talk

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Mailing lists to be retired
by Bruce O'Neel 27 Jun '23

27 Jun '23

Hi all, After looking at the number of mailing lists that we host the Board thought that it would good to prune some lists which are no longer used. The proposal about which lists to keep and delete is below. Does anyone have any disagreements with the lists to delete? The next step, assuming no one is upset with this list, is for an email to be sent to each list to be closed. If no one jumps up and says to keep the list then after a few weeks the list will be removed. We of course will keep the archives. Thanks. bruce * Keep * Beginners * Board * Box-Admins * Context * Cryptography * Flow * Magma * Packages * Release * Seaside-dev * Seaside * Spoon * Squeak-dev * Squeak-ev * SqueakNOS * Uksmalltalk * VM-beginners * VM-dev * Webteam * Close * Communities (last significant post 2010) * Elections (last post 2013) * Exupery (last post 2010) * Hardware (last post 2009) * Mailinglist-issues (if mailing lists don’t work, this one likely will not work either) * News (last post 2010) * Safara* (no posts at all) * Setools (last discussion 2010, one unanswered post with fresh ideas 2018) * SoC (last post 2009) * SqueakDBX (last post in 2017, were Monticello commits) * Squeak-doc (last post 2009) * Squeak-E (last post 2006) * Squeakfoundation (last post 2006 except for some strange messages in April 2023) * Squeak-fr (last post 2010, in emergency moderation mode) * UI (one sole question in 2021 got forwarded to squeak-dev by Dave)

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Catalyst, a WebAssembly Squeak virtual machine
by Craig Latta 26 Jun '23

26 Jun '23

Hi all-- I'm closing in on a WebAssembly virtual machine for Squeak, and I've written some blog posts about it. cheers! Craig [1] https://tinyurl.com/3z5ru8vx (thiscontext.com) [2] https://tinyurl.com/54wpcd58 (thiscontext.com) [3] https://tinyurl.com/4k5bhwjz (thiscontext.com) -- Craig Latta :: research computer scientist :: Black Page Digital :: Berkeley, California :: 663137D7940BF5C0AF :: C1349FB2ADA32C4D5314CE ::

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UK Smalltalk User Group Meeting: David Buck - Beagle Smalltalk, 28 June 2023
by Giovanni Corriga 26 Jun '23

26 Jun '23

For the UKSTUG June meeting, Simberon's David Buck will present Beagle Smalltalk. Over the past 8 years, David has been developing a Smalltalk virtual machine and image. He used it to release two Smalltalk games which ran on Android and iPhone devices. More recently, he's re-written the VM to use a new bytecode set and re-written the Smalltalk compiler with a new framework to make a new Smalltalk environment called Beagle Smalltalk named after the ship that took Darwin on his voyage of discovery. David plans to release this as an open-source Smalltalk to help and encourage kids to explore the world of programming. In this talk, David presents the current status of the project and where he hopes to go with it. David Buck is the president of Simberon ( http://simberon.com/ ) - a company that has been providing Smalltalk training and consulting for over 25 years. Along with James Robertson, David produced the Industry Misinterpretations podcast and later the Smalltalk Reflections podcast with Craig Latta. David remains a Smalltalk enthusiast and works to spread the word about Smalltalk. This will be an online meeting from home. If you'd like to join us, please sign up in advance on the meeting's Meetup page ( https://www.meetup.com/ukstug/events/293933993/ ) to receive the meeting details.

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The Inbox: System-ct.1417.mcz
by commits＠source.squeak.org 26 Jun '23

26 Jun '23

A new version of System was added to project The Inbox: http://source.squeak.org/inbox/System-ct.1417.mcz ==================== Summary ==================== Name: System-ct.1417 Author: ct Time: 26 June 2023, 4:15:14.920016 pm UUID: b04b204e-ffa6-804e-81a1-9d0277ce0a6b Ancestors: System-mt.1416 SystemNavigation: Adds and uses #browseClassesSelect:, analogously to #browseAllSelect:. =============== Diff against System-mt.1416 =============== Item was added: + ----- Method: SystemNavigation>>browseClassesSelect: (in category 'browse') ----- + browseClassesSelect: aBlock + "Create and schedule a class list browser on each class that fulfills the aBlock predicate. + + self systemNavigation browseClassesSelect: [:class | class isVariable] + " + + ^ self browseClassesSelect: aBlock name: nil! Item was added: + ----- Method: SystemNavigation>>browseClassesSelect:name: (in category 'browse') ----- + browseClassesSelect: aBlock name: aString + "Create and schedule a class list browser on each class that fulfills the aBlock predicate. + + self systemNavigation browseClassesSelect: [:class | class isVariable] name: 'Variable classes' + " + + | classes | + classes := SortedCollection sortBlock: #name ascending. + Cursor wait showWhile: [ + Smalltalk allClassesDo: [:class | + (aBlock value: class) ifTrue: [ + classes add: class]]]. + + ^ self + browseClassList: classes + name: aString! Item was changed: ----- Method: SystemNavigation>>browseClassesWithNamesContaining:caseSensitive: (in category 'browse') ----- browseClassesWithNamesContaining: aString caseSensitive: caseSensitive + " + SystemNavigation default browseClassesWithNamesContaining: 'eMorph' caseSensitive: true + " - "SystemNavigation default browseClassesWithNamesContaining: 'eMorph' caseSensitive: true " "Launch a class-list list browser on all classes whose names containg aString as a substring." + ^ self + browseClassesSelect: [:class | class name includesSubstring: aString caseSensitive: caseSensitive] + name: ('Classes whose names contain {1} ({2})' translated format: { + aString. + caseSensitive ifTrue: ['case-sensitive' translated] ifFalse: ['use shift for case-sensitive' translated]})! - | suffix aList | - suffix := caseSensitive - ifTrue: [' (case-sensitive)'] - ifFalse: [' (use shift for case-sensitive)']. - aList := OrderedCollection new. - Cursor wait - showWhile: [Smalltalk - allClassesDo: [:class | (class name includesSubstring: aString caseSensitive: caseSensitive) - ifTrue: [aList add: class name]]]. - ^ ToolSet openClassListBrowser: aList asSet sorted title: 'Classes whose names contain ' , aString , suffix!

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[ANN] JsSqueak (finally) available
by Florin Mateoc 26 Jun '23

26 Jun '23

Hi all, It took a while - and I am not talking about how long I have worked on it (especially in calendar years), but since I first mentioned it on this list, or even since I presented it at the UK meetup - but now it's finally here: https://github.com/fmateoc/JsSqueak If you want to try it out and are facing difficulties following the brief instructions on the project's web page, please let me know, hopefully this will lead to better instructions Thank you and have fun! Florin

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[ANN] Squeak Inbox Talk update -- HyperKitty support, rich-text mails, attachments, & more
by christoph.thiede＠student.hpi.uni-potsdam.de 26 Jun '23

26 Jun '23

Hi all! I'm happy to announce that I have released a new version of Squeak Inbox Talk today. You can install it by choosing "Squeak Inbox Talk" from the Tools menu in the docking bar, or upgrade your existing installation from the Settings button > self-update. Please do perform the self-update twice due to a bug in an older version of the self-updater. Here are some highlights of the new update: * Support for the new HyperKitty mailing list archive (download is now significantly faster) * Read messages in rich text (HTML) * Direct access to attachments of all messages * Polished UI, several convenience features, and support for the latest trunk You can read the full changelog here: https://github.com/hpi-swa-lab/squeak-inbox-talk/releases/tag/v1.0 Please try it out and give feedback!! :-) Best, Christoph PS: Thanks to Marcel for his detailed advice & contribution to the UI, and to the board for upgrading to HyperKitty which finally offers MIME support! --- Sent from Squeak Inbox Talk (what did you think?!) ["squeak-inbox-talk.png"]

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The Inbox: Regex-Tests-Core-tobe.34.mcz
by commits＠source.squeak.org 25 Jun '23

25 Jun '23

A new version of Regex-Tests-Core was added to project The Inbox: http://source.squeak.org/inbox/Regex-Tests-Core-tobe.34.mcz ==================== Summary ==================== Name: Regex-Tests-Core-tobe.34 Author: tobe Time: 13 February 2023, 10:30:58.863775 am UUID: 897286b7-bca5-405c-92c0-52e09604b1fc Ancestors: Regex-Tests-Core-ct.33 Complements Regex-Core-tobe.86 =============== Diff against Regex-Tests-Core-ct.33 =============== Item was added: + ----- Method: RxParserTest>>testNonQuantifier (in category 'tests') ----- + testNonQuantifier + "Test expressions that look like quantifier expressions but do not fully match" + self assert: ('a{x}' matchesRegex: 'a{x}'). + self assert: ('a{,x}' matchesRegex: 'a{,x}'). + self assert: ('a{,}' matchesRegex: 'a{,}'). + self assert: ('a{,,}' matchesRegex: 'a{,,}'). + self assert: ('a{1,2,}' matchesRegex: 'a{1,2,}'). + self assert: ('a{,' matchesRegex: 'a{,'). + self assert: ('a{' matchesRegex: 'a{'). + self assert: ('a{1' matchesRegex: 'a{1'). + self assert: ('a{1,' matchesRegex: 'a{1,').!

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