4 ms·

> In short imagine Java or C++ objects, but they can live in a soup in a persistent database. AllegroCache still exists today. So at least Lisp people don't ha

by jhgb 5y ago

> In short imagine Java or C++ objects, but they can live in a soup in a persistent database. AllegroCache still exists today. So at least Lisp people don't have to imagine that. I wonder if that is one of the reasons why CL people in the 1980s came up with UPDATE-INSTANCE-FOR-REDEFINED-CLASS.

fiddlerwoaroof 5y ago
Yeah, you could supposedly upgrade all the software on a lisp systems without having to restart anything (assuming the developers implemented the various redefinition protocols correctly.)
- johnisgood 5y ago
  Ahh, how is StumpWM doing? The tiling window manager written in Common Lisp. You could hack it while it was running. I never got around to try. :(
- jdougan 5y ago
  You can definitely do that in an image-based Smalltalk system, it is necessary to support the code browsers. I imagine the lispm devs had the same reason.
  - jhgb 5y ago
    What I had in mind was that this is also necessary to support an on-disk object database.
    - jdougan 5y ago
      That can be trickier, but Gemstone/S did it transactionally.