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GeneralCoq will be renamedFrom the Coq-club:
Suggestions for alternative names go here. On compositionalityJules Hedges has written a thought-provoking blog post, On compositionality where he connects the familiar idea of compositionality to the idea of emergent effects in nature, where systems can be understood as either having compositional properties or emergent properties. The key point about emergent systems is that they are hard to understand, and this is as true for engineering as it is for science. He goes on to say "As a final thought, I claim that compositionality is extremely delicate, and that it is so powerful that it is worth going to extreme lengths to achieve it", so that avoiding emergent effects is a characteristic of good programming language design. Some thoughts:
Notes on notation and thought
(via HN)
A nice collection of quotes on notation as a tool of thought. Mostly not programming related, which actually makes them more interesting, offering a richer diversity of examples. We used to have quite a few discussions of notation in the early days (at least in part because I never accepted the prevailing dogma that syntax is not that interesting or important), which is a good reminder for folks to check the archives. Sequent Calculus as a Compiler Intermediate LanguageSequent Calculus as a Compiler Intermediate Language
By Andris Birkmanis at 2018-04-02 17:06 | Functional | General | Lambda Calculus | Semantics | Type Theory | 2 comments | other blogs | 45575 reads
Why Is SQLite Coded In CWe are nearing the day someone quips that C is an improvement on most of its successors (smirk). So reading this page from the SQLite website is instructive, as is reading the page on the tooling and coding practices that make this approach work. I think none of this is news, and these approaches have been on the books for quite a bit. But still, as I said: an improvement on most of its successors. Hat tip: HN discussion. Proceedings of the ACM on Programming Languages
See the ToC of the September 2017, ICFP issue, here. Some very cool stuff. Congrats! Graydon Hoare: What next for compiled languages?Since everybody is talking about this post,we might as well. Key topics discussed: modules(you know, real ones); errors ("there are serious abstraction leakages and design trade-offs in nearly every known approach"); Coroutines, async/await, "user-visible" asynchronicity; effect systems, more generally (you could see that coming, couldn't you?); Extended static checking (ESC), refinement types, general dependent-typed languages; and formalization ("we have to get to the point where we ship languages -- and implementations -- with strong, proven foundations"). He goes on to discuss a whole grab bag of "potential extras" for mainstream languages, including the all time favorite: units of measure. Feel free to link to the relevant discussions from the LtU archive... p5.jsp5.js is a JavaScript library inspired by Processing. Seems it could be a fun way to introduce non-CS types to programming. The demo is particularly well done; check it out first. The actual home of the project is here. Idris 1.0 ReleasedIdris version 1.0 corresponds to the language as described in Type-Driven Development with Idris, published last week by Manning. Stroustrup's Rule and Layering Over TimeDave Herman is the voice of the oppressed: syntax is important, contrary to what you have been told! To illustrate he discusses what he calls Stroustrup's Rule:
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