Here's a semipractical use case: add 1 to the display in each of a dynamic collection of calculators (math domain widgets). What can do this as end-user programming? It's fairly obvious that a textual language can do this. Can any graphical ones? Can something like lively kernel do this by demonstration? How about excel? With a dynamic collection? What will work on android jelly bean? I'm away from my desktop right now. On Apr 21, 2013 12:22 AM, "John Carlson" <yottz...@gmail.com> wrote:
Looking for systems like this I found app-inventor activity starter on my phone. Has anyone tried this? On Apr 21, 2013 12:14 AM, "John Carlson" <yottz...@gmail.com> wrote: > I believe the key to this is to create domain widgets. I am not sure if > this needs to be something like etoys, maybe a combination between forth > and etoys. I believe collections can make for interesting domain widgets. > I have only programmed systems with collections of text. What systems work > on collections of domain widgets? > On Apr 21, 2013 12:02 AM, "John Carlson" <yottz...@gmail.com> wrote: > >> Yeah, you're right. The theory is coming up with a syntax free >> language. Can you? >> On Apr 21, 2013 12:00 AM, "David Barbour" <dmbarb...@gmail.com> wrote: >> >>> How is that a theory? Sounds like a design principle. >>> >>> >>> On Sat, Apr 20, 2013 at 9:42 PM, John Carlson <yottz...@gmail.com>wrote: >>> >>>> Here's my theory: reduce arguing with the compiler to minimum. This >>>> means reducing programmers' syntax errors. Only add syntax to reduce >>>> errors (the famous FORTRAN do loop error). The syntax that creates errors >>>> should be removed. >>>> On Apr 20, 2013 11:18 PM, "John Carlson" <yottz...@gmail.com> wrote: >>>> >>>>> I think it's better to work from examples, ala JUnit and end-user >>>>> programming than come up with a theory that solves nothing. One can >>>>> compare EGGG to GDL in scope and expressiveness. One interesting part of >>>>> gaming is arguing about rules. What computer systems do that? >>>>> On Apr 20, 2013 11:09 PM, "John Carlson" <yottz...@gmail.com> wrote: >>>>> >>>>>> Practice or practical? Maybe there's space for practical theory, >>>>>> instead of relying on things that don't exist. Why do we distinguish >>>>>> practice from theory? Seems like a fallacy there. >>>>>> On Apr 20, 2013 10:51 PM, "David Barbour" <dmbarb...@gmail.com> >>>>>> wrote: >>>>>> >>>>>>> only in practice >>>>>>> >>>>>>> >>>>>>> On Sat, Apr 20, 2013 at 8:23 PM, John Carlson <yottz...@gmail.com>wrote: >>>>>>> >>>>>>>> Take my word for it, theory comes down to Monday Night Football on >>>>>>>> ESPN. >>>>>>>> On Apr 20, 2013 10:13 PM, "John Carlson" <yottz...@gmail.com> >>>>>>>> wrote: >>>>>>>> >>>>>>>>> I think that concepts in some sense transcend the universe. Are >>>>>>>>> there more digits in pi than there are atoms in the universe? I >>>>>>>>> guess we >>>>>>>>> are asking if there are transcendental volumes which are bigger or >>>>>>>>> more >>>>>>>>> complex than the universe. If the universe contains the >>>>>>>>> transcendental as >>>>>>>>> symbols then how many transcendental symbols are there? I think you >>>>>>>>> still >>>>>>>>> run into Russell's Paradox. >>>>>>>>> On Apr 20, 2013 9:15 PM, "Simon Forman" <forman.si...@gmail.com> >>>>>>>>> wrote: >>>>>>>>> >>>>>>>>>> On 4/20/13, John Carlson <yottz...@gmail.com> wrote: >>>>>>>>>> > Do you need one symbol for the number infinity and another for >>>>>>>>>> denoting >>>>>>>>>> > that a set is inifinite? Or do you just reason about the size >>>>>>>>>> of the set? >>>>>>>>>> > Is there a difference between a set that is countably infinite >>>>>>>>>> and one that >>>>>>>>>> > isn't countable? I barely know Russell's paradox... you're >>>>>>>>>> ahead of me. >>>>>>>>>> >>>>>>>>>> Well, for what it's worth, quoting from Meguire's 2007 "Boundary >>>>>>>>>> Algebra: A Simple Notation for Boolean Algebra and the Truth >>>>>>>>>> Functors": >>>>>>>>>> >>>>>>>>>> "Let U be the universal set, a,b∈U, and ∅ be the null set. Then >>>>>>>>>> the >>>>>>>>>> columns headed by “Sets” show how the algebra of sets and the pa >>>>>>>>>> are >>>>>>>>>> equivalent. >>>>>>>>>> >>>>>>>>>> Table 4-2. The 10 Nontrivial Binary Connectives (Functors). >>>>>>>>>> >>>>>>>>>> Name Logic Sets BA >>>>>>>>>> >>>>>>>>>> Alternation a∨b a∪b ab >>>>>>>>>> Conditional a→b a⊆b (a)b >>>>>>>>>> Converse a←b a⊇b a(b) >>>>>>>>>> Conjunction a∧b a∩b ((a)(b)) >>>>>>>>>> ___ >>>>>>>>>> NOR a↓b a∪b (ab) >>>>>>>>>> ___ >>>>>>>>>> Sheffer stroke a|b a∩b (a)(b) >>>>>>>>>> >>>>>>>>>> Biconditional a↔b a⊆b⊆a (((a)b)(a(b))) -or- ((a)(b))(ab) >>>>>>>>>> >>>>>>>>>> (Apologies if the Unicode characters got mangled!) >>>>>>>>>> >>>>>>>>>> Check out http://www.markability.net/sets.htm also. >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> I don't know much about set theory but I think the "Universal" set >>>>>>>>>> stands for the set of everything, no? >>>>>>>>>> >>>>>>>>>> Cheers, >>>>>>>>>> ~Simon >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> "The history of mankind for the last four centuries is rather >>>>>>>>>> like that of >>>>>>>>>> an imprisoned sleeper, stirring clumsily and uneasily while the >>>>>>>>>> prison that >>>>>>>>>> restrains and shelters him catches fire, not waking but >>>>>>>>>> incorporating the >>>>>>>>>> crackling and warmth of the fire with ancient and incongruous >>>>>>>>>> dreams, than >>>>>>>>>> like that of a man consciously awake to danger and opportunity." >>>>>>>>>> --H. P. Wells, "A Short History of the World" >>>>>>>>>> _______________________________________________ >>>>>>>>>> fonc mailing list >>>>>>>>>> fonc@vpri.org >>>>>>>>>> http://vpri.org/mailman/listinfo/fonc >>>>>>>>>> >>>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> fonc mailing list >>>>>>>> fonc@vpri.org >>>>>>>> http://vpri.org/mailman/listinfo/fonc >>>>>>>> >>>>>>>> >>>>>>> >>>>>>> _______________________________________________ >>>>>>> fonc mailing list >>>>>>> fonc@vpri.org >>>>>>> http://vpri.org/mailman/listinfo/fonc >>>>>>> >>>>>>> >>>> _______________________________________________ >>>> fonc mailing list >>>> fonc@vpri.org >>>> http://vpri.org/mailman/listinfo/fonc >>>> >>>> >>> >>> _______________________________________________ >>> fonc mailing list >>> fonc@vpri.org >>> http://vpri.org/mailman/listinfo/fonc >>> >>>
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