Wed, 14 May 1997 01:42:21 -0400 (EDT)
HB> Another approach is to create a brand new functional array by copying
HB> an existing mutable array. This solves the problem of bad semantics,
HB> but forces you to throw away and GC a perfectly good mutable array for
HB> every immutable array. So we have good semantics, but bad performance.
Another approach is to when you allocate them pass a generator.
(make-array 10 :allocation immutable :generator '(lambda (i) (random 100)))
to allocate an immutable array with 10 random numbers in it.
(make-array (length foo) :allocation immutable :generator
`(lambda (i) (nth i ,foo)))
to initialize from a list.
A simple, clean solution?