Mutation

[Harvey J. Stein]

Regarding the use of mutation, isn't it pretty common once you start
using arrays?  When doing large data analyses in Lisp, I've had to
replace lists of numbers with typed arrays, and changed computations
to all work in place so as to reduce garbage creation.  This is to
increase efficiency, and often helps alot (can give a factor of 2 or 3
speedup, or even make an intractible problem tractible).  What sort of
effects are the anti-mutation proposals going to have on this?

-- 
Harvey J. Stein
Berger Financial Research
abel@netvision.net.il