Reference Classes: Accessing methods via [[...]], bug?
Are you familiar with "Concepts, Techniques, and Models of Computer Programming" by van Roy and Haridi? ?That's what really helped me to understand the strengths and weaknesses of the various styles of programming.
Thanks, I wasn't. ?Yes, interesting similar distinction between functional and "type" decomposition. ?An important associated aspect for us is the distinction between reference objects and "ordinary" R objects, not AFAICS conveyed by their more abstract treatment.
Another discussion I found useful was in SICP: http://mitpress.mit.edu/sicp/full-text/book/book-Z-H-17.html#%_sec_2.4.3 I really like the metaphor of method dispatch as a table with types in the columns and operations in the rows - then you can think of generic functions oo as being row-based, and class based oo as column-based. Hadley
Assistant Professor / Dobelman Family Junior Chair Department of Statistics / Rice University http://had.co.nz/