Squeak-dev September 2021

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23 participants
204 discussions

Json dictionary tree accessing
by tim Rowledge 03 Sep '21

03 Sep '21

When driving JS libraries from Seaside it is often necessary to build a tree of dictionaries to encode settings - for example, using vega-lite to display charts & graphs. I currently have a very simple case that ends up rather verbose - |barchart| barchart := Dictionary new. barchart at: #'$schema' put: 'https://vega.github.io/schema/vega-lite/v5.json'; at: #description put: 'A simple bar chart'; at: #width put: 'container'; at: #usermeta put: (Dictionary new at: #embedOptions put: (Dictionary new at: #export put: true; at: #compiled put: false; at: #editor put: false; yourself); yourself); at: #mark put: (Dictionary new at: #type put: #bar; at: #tooltip put: true; yourself); at: #encoding put: (Dictionary new at: #x put: (Dictionary new at: #field put: 'label'; at: #type put: #nominal; at: #axis put: (Dictionary new at: #labelAngle put: -45; yourself); at: #title put: #Group; yourself); at: #y put: (Dictionary new at: #field put: 'value'; at: #type put: #quantitative; at: #title put: #Value; yourself); yourself); at: #height put:'container'. ^barchart ... and that's without any actual data! If I want to do something like change the label angle I end up with ugliness like (((chartSpec at: #encoding) at: #x) at: #axis) at:#labelAngle put: axisLabellingAngle. I feel sure I've seen this done better but I can't find anything with my current searches. It wouldn't be too hard to implement a method to do #atPath: #(encoding x axis labelAngle) put: thingy but if it's been done cleanly by somebody I'd much rather just load it. Somebody please point me to the ludicrously obvious answer any idiot should have spotted immediately... tim -- tim Rowledge; tim(a)rowledge.org; http://www.rowledge.org/tim Strange OpCodes: AG: Add Gibberish

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"The influence of an object-oriented language on the programming environment"
by Thiede, Christoph 01 Sep '21

01 Sep '21

Hi all, does anyone have access to the paper "The influence of an object-oriented language on the programming environment" from 1983 by Adele Goldberg and would not mind sharing it? It appears not to be available without a paywall and it would not even be listed in certain hubs of science ... PM appreciated. :-) Best, Christoph

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Mailing list conventions - "reply to" or "reply to all"?
by christoph.thiede＠student.hpi.uni-potsdam.de 01 Sep '21

01 Sep '21

Hi all, just reconsidering the default settings of Squeak Inbox Talk, and I am wondering when you reply to an existing conversation, should you "reply to" only the list address (squeak-dev(a)lists.squeakfoundation.org) or "reply to all" including a) the "thread starter", b) the latest replier, or c) every other person involved in the conversation? Thanks in advance. Best, Christoph --- Sent from Squeak Inbox Talk

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Squeak Pins are ready to go for our 25th anniversary
by tim Rowledge 01 Sep '21

01 Sep '21

Squeak became part of our world 25 years ago. We're doing a bit of celebrating over the next months, and *you* can take part. One cool way to take part is to get a Squeak Pin. "What is a Squeak Pin?" you ask - Well, like that. "How do I get one?" you ask. Tweet Craig @ccrraaiigg "How much?" Not sure yet; there will obviously be shipping costs to work out. tim -- tim Rowledge; tim(a)rowledge.org; http://www.rowledge.org/tim There are only two really difficult problems in programming: -Naming -Cache invalidation -Off-by-one errors

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