4 ms·

A demonstration of on-the-fly modification of GUI internals in Smalltalk-78: https://www.youtube.com/watch?v=eEz08IlcNMg https://www.youtube.com/watch?v=eEz08Il

A demonstration of on-the-fly modification of GUI internals in Smalltalk-78: https://www.youtube.com/watch?v=eEz08IlcNMg https://www.youtube.com/watch?v=eEz08IlcNMg

rbanffy 1y ago
I once crashed Squeak by telling it that true:=false
- Jtsummers 1y ago
  I think that or something like it was a rite of passage in our course using Smalltalk in college (number forgotten). "That couldn't possibly work...Oh, shit."
  - igouy 1y ago
    The "couldn't possibly work" things seem different — they don't crash the VM and exit.
- deleted 1y ago
  [deleted]
- speedbird 1y ago
  Object become: nil -- pretty findamental rug pull
  - deleted 1y ago
    [deleted]
  - igouy 1y ago
    Which could be handled without crash & exit behavior. That does not crash Pharo Smalltalk. That does not crash Dolphin Smalltalk. Object class(Object)>>error: Object class(Object)>>primitiveFailed Object class(Object)>>become: UndefinedObject>>{unbound}doIt
    - rbanffy 1y ago
      Every time a young hacker finds one of these, it gets patched.
      - igouy 1y ago
        Today after re-install on MSWin10 Object become: nil Cuis does crash & exit, or hangs, or … Sorry but the Squeak VM has crashed. … crash.dmp
- igouy 1y ago
  Seems like Cuis Smalltalk also has that crash & exit behavior. That does not crash Pharo Smalltalk. That does not crash Dolphin Smalltalk.
  - rbanffy 1y ago
    At that time it didn’t exit - it just hung there forever. Even the mouse wouldn’t move.
    - igouy 1y ago
      Today after re-install on MSWin10 true := false Cuis is perfectly OK Cannot store into ->
whartung 1y ago
My first encounter with ST was at a Macintosh event at college in ‘85. And there was a fellow there with a Mac Plus, and he had the Apple ST image running on it. The Apple ST image was a descendant of the original Xerox image. This is the same image that became Squeak. Quite the heritage. The first the the guy showed me was how easy it was to change the width of the scroll bar. A simple tweak and, voila, the scroll bar changed. This worked particularly well because in the original UI, the scroll bar was a popup (unlike most are today). It was a dynamic demo to be sure to get that kind of reactivity to development. Made an impression to be sure.
- lproven 1y ago
  You confused me with "ST" here. I thought you meant the computer called the ST, that could run an Apple OS image. https://en.wikipedia.org/wiki/Atari_ST https://en.wikipedia.org/wiki/Atari_ST

A demonstration of on-the-fly modification of GUI internals in Smalltalk-78: https://www.youtube.com/watch?v=eEz08IlcNMg https://www.youtube.com/watch?v=eEz08IlcNMg

rbanffy 1y ago

I once crashed Squeak by telling it that true:=false

Jtsummers 1y ago
I think that or something like it was a rite of passage in our course using Smalltalk in college (number forgotten). "That couldn't possibly work...Oh, shit."
- igouy 1y ago
  The "couldn't possibly work" things seem different — they don't crash the VM and exit.
deleted 1y ago
[deleted]
speedbird 1y ago
Object become: nil -- pretty findamental rug pull
- deleted 1y ago
  [deleted]
- igouy 1y ago
  Which could be handled without crash & exit behavior. That does not crash Pharo Smalltalk. That does not crash Dolphin Smalltalk. Object class(Object)>>error: Object class(Object)>>primitiveFailed Object class(Object)>>become: UndefinedObject>>{unbound}doIt
  - rbanffy 1y ago
    Every time a young hacker finds one of these, it gets patched.
    - igouy 1y ago
      Today after re-install on MSWin10 Object become: nil Cuis does crash & exit, or hangs, or … Sorry but the Squeak VM has crashed. … crash.dmp
igouy 1y ago
Seems like Cuis Smalltalk also has that crash & exit behavior. That does not crash Pharo Smalltalk. That does not crash Dolphin Smalltalk.
- rbanffy 1y ago
  At that time it didn’t exit - it just hung there forever. Even the mouse wouldn’t move.
  - igouy 1y ago
    Today after re-install on MSWin10 true := false Cuis is perfectly OK Cannot store into ->

whartung 1y ago

My first encounter with ST was at a Macintosh event at college in ‘85. And there was a fellow there with a Mac Plus, and he had the Apple ST image running on it. The Apple ST image was a descendant of the original Xerox image. This is the same image that became Squeak. Quite the heritage. The first the the guy showed me was how easy it was to change the width of the scroll bar. A simple tweak and, voila, the scroll bar changed. This worked particularly well because in the original UI, the scroll bar was a popup (unlike most are today). It was a dynamic demo to be sure to get that kind of reactivity to development. Made an impression to be sure.

lproven 1y ago
You confused me with "ST" here. I thought you meant the computer called the ST, that could run an Apple OS image. https://en.wikipedia.org/wiki/Atari_ST https://en.wikipedia.org/wiki/Atari_ST