Collection interfaces

[Greg Ewing]

Alex Martelli wrote:
> 
> the indisputable success
> of Smalltalk does show that single-inheritance is *practically
> workable* for many tasks

Smalltalk is like Python in that its inheritance hierarchy
is more about implementation inheritance than subtype
relationships. So I don't think you can conclude much
from Smalltalk about whether single inheritance is adequate
for classification purposes.

-- 
Greg Ewing, Computer Science Dept, University of Canterbury,	  
Christchurch, New Zealand
To get my email address, please visit my web page:	  
http://www.cosc.canterbury.ac.nz/~greg