Hi Serge, On Mon, Apr 11, 2016 at 09:46:02AM +0200, Serge Stinckwich wrote: > On Mon, Apr 11, 2016 at 8:57 AM, Alistair Grant <akgrant0...@gmail.com> wrote: > > > > Also my first week with Pharo, and first week with Smalltalk in over 20 > > years. > > Congrats ! > Tell us what is your experience until now ;-)
I was the technical lead of a team that programmed with VisualWorks 2.5 for several years in the 90's, porting it to VMS (VAX and Aplha) and writing a real-time graphical interface for monitoring and controlling the water distribution in one of the capital cities in Australia (Brisbane). The UI allowed users to build a library of widgets from basic shapes, e.g. valves, pumps, reservoirs, etc. They could then be built up to schematics and attached to a real-time database, receiving events whenever a value changed. E.g. valves would change shape or colour depending on whether they were open or closed, alarms would flash, a pump would show its flow rate, etc. We tested it receiving up to 1200 events per second (this was in the days when a 100MHz RISC processor was the best available (from memory)). All the graphics, event management and query optimisation were in Smalltalk, the database query execution and event delivery was in C (the database was in-memory and didn't support any query language, that all had to be done by the client). I left the company a year or so later. I heard that it was replaced some years after I left, but I'm not sure when that happened. Cheers, Alistair
