On 5/9/18, Trygve Reenskaug <tryg...@ifi.uio.no> wrote: > Of course not. But one of my goals is that future dynabooks will be > backwards compatible. Recent discussions have shown me that this goal is > a research project. > --Trygve
Indeed [1]. And a very interesting one! Found and read your overview http://folk.uio.no/trygver/themes/Personal/PP-NIK.pdf And also the more elaborate draft of a description (50 pages) [2] http://folk.uio.no/trygver/themes/Personal/pp-index.html links to http://folk.uio.no/trygver/themes/Personal/PersonalProgramming.233.zip For my personal programming needs in Squeak so far I realized that the 'data' part is the easiest one to tackle in terms of backward compatibility. And some success in converting data to code forth and back to ease compatibility. It would be nicer of course to have a homoiconic notation [3] but still very doable. In particular as the new VMs have lifted the size constraint for the source code of in methods. --Hannes [1] An example is about the work involved to get a 17 year old 'Dynamic essay' from Squeak 3.2 to read in properly into a Squeak 6.0a trunk image http://forum.world.st/Dynamic-essay-project-MorphLayoutArticle-on-Bob-s-SuperSwiki-tc5075374.html Quite some effort and not a full result yet... Though Squeak has some mechanisms to update classes and objects. In that thread Edgar de Cleene outlined the idea of a recursive DNU mechanism to check out earlier messages from the web http://forum.world.st/Dynamic-essay-project-MorphLayoutArticle-on-Bob-s-SuperSwiki-tp5075374p5075625.html Needs much more elaboration ... ------------------- [2] Abstract Computer programming celebrates its platinum jubilee on the 21st of June, 2018. Exactly 70 years ago, the world's first programmer wrote the world's first program and then stored and executed it in the world's first stored program computer; affectionately known as Baby. The solitary Baby has morphed into billions of computers that are loosely connected into a single, global machine. Baby's control panel has morphed into graphical user interfaces (GUI) that empower everybody to augment their intellect. The consequences are deeply radical for individuals and society alike. A significant side effect of the GUI is that the computer has faded into the background and the user focuses on the immediate needs. We present DCI, a new programming paradigm that targets structures of communicating computers. Its goal is readable code that is so intuitive that everybody can grok it and so comprehensive that expert programmers will enjoy using it. DCI programming has been tested on real-life problems. A set of controlled experiments showed that DCI code is more readable than Java code. A new programming environment, BabyIDE, targets the single, global machine. Different GUIs support programmers having different mental models depending on their interests and proficiency. An MVC system architecture makes the program fade into the background and lets the user concentrate on satisfying his or her immediate needs. My approach is experimental. Smalltalk's universe of objects imitates the single, global machine and is my proving ground.We give two examples: one for experts and another for novices. A video1 illustrates the novice IDE. Our approach is experimental. The universe of objects found in Smalltalk's image imitates a computer network and is our proving ground. Squeak 3.10.2 is our laboratory where we experiment with various versions of BabyIDE. A great deal of work remains to make BabyIDE generally available and we are searching for a trailblazer who will take charge of it and take it out into the world. Keywords: Personal Programming, Novice Programming, Single Global Machine, IOT, Smart Home, MVC, DCI, BabyIDE, Smalltalk, Object Orientation [3] http://goran.krampe.se/2016/07/19/spry-is-a-smalltalk/ > On 09.05.2018 12:19, Marcus Denker wrote: >>> >>> >>>> I go back to Alan Kay's vision of a Dynabook: A/personal/computer >>>> for children of all ages. It should contain all its owner's >>>> /personal/data, including his or her/personal/programs, as they >>>> evolve through the years. Continuity is a must; the owner shall >>>> never loose data. >>>> >>> >> >> Do you really expect that the dynabook will be 100% backward >> compatible to Smalltalk-80? >> >> Marcus > > -- > > /The essence of object orientation is that objects collaborateto achieve > a goal. / > Trygve Reenskaug mailto: tryg...@ifi.uio.no <mailto:%20tryg...@ifi.uio.no> > Morgedalsvn. 5A http://folk.uio.no/trygver/ > N-0378 Oslo http://fullOO.info > Norway Tel: (+47) 22 49 57 27 > >
