The Xerox Alto, Smalltalk, and rewriting a running GUI
http://www.righto.com/2017/10/the-xerox-alto-smalltalk-and-rewriting.html [www.righto.com]
2017-10-23 19:42
One unusual feature of Smalltalk is you can view and modify the system’s code while the system is running. I demonstrate this by modifying the scrollbar code on a running system.