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2023-08-22.log
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<cow_2001>What the hell's a Java abstract class and how do you make one in GOOPS? I had never done any OOP and it all looks like gibberish to me. <cow_2001>I wrote a few Python classes, but a bunch of records and functions could have done the same. <rlb>cow_2001: not sure about the details there, but goops, clojure, clos, etc. are somewhat a different model, and much more flexible than java. I suspect you may not be able to match it very closely. Though you should be able to do similar/equivalent things, more broadly speaking. <rlb>Additionally (no idea if it's useful) one way some people have described one of the high level differences between what java/c++/python are doing and what clos/goops/clojure are doing is "noun oriented" vs "verb oriented". <rlb>(Not sure if it's still available/relevant, but fwiw I found Sonya Keene's "Object-Oriented Programming in Common Lisp: A Programmers Guide" useful a long time ago, though it's obviously CLOS oriented, and that was a long while back. I tend to think of goops as similar to clos, though simpler.) <rlb>Wow, and it was written even a lot longer back still :) <rlb>In any case, offhand, I suspect you might not want/need some abstract class related stuff in goops... <iyzsong>abstract class have abstract methods. at compile time, 1.you can't make objects from abstract class; 2.subclass of abstract class which don't implement all its abstract methods is still abstract class. at run time, it's a normal class type, for type checking and code reuse (methods and solts). <rlb>(iirc. clos is a good bit more complex -- haven't used it in a long time) <rlb>The Keene book as I recall was quite nicely compact. <sneek>I've been serving for one month and 10 days <sneek>This system has been up 20 weeks, 2 days, 22 hours, 2 minutes <mirai>is there a way to insert a DOCTYPE instruction with sxml->xml ? <cbaines>what leads Guile to make so many readlink system calls for directories on the load path? <haugh>mirai, I think you just have to pump a string out the port first. xml->sxml has a #:doctype-handler option for the input, but it's just dropped by default <mirai>haugh: is it valid to do so? You're adding the DOCTYPE declaration before the <?xml …?> processing instruction <haugh>mirai, I don't know how you're generating the DTD tag with sxml->xml. <haugh>Oh, are you defining your XML declaration in SXML? <mirai>haugh: I'm not adding it yet, yes.