Raymond Hettinger <python@rcn.com>: > I would like to know what you all think about formalizing an observer > protocol for python objects. > > Alex's smart shelves provide an immediate application -- it needs to know > which of its cache objects have changed state. Another application would be > to enable computation caching in my matrix package which needs to invalidate > the cache whenever a matrix element gets updated. This could be very useful for GUIs, too, for implementing model-view relationships. The anygui people would be very interested, I'm sure. Greg Ewing, Computer Science Dept, +--------------------------------------+ University of Canterbury, | A citizen of NewZealandCorp, a | Christchurch, New Zealand | wholly-owned subsidiary of USA Inc. | greg@cosc.canterbury.ac.nz +--------------------------------------+
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