[Haskell-cafe] mutable arrays of tuples

Jake McArthur jake.mcarthur at gmail.com
Thu Aug 9 14:20:31 CEST 2012

In fact, unboxed arrays of tuples are represented in vector as tuples of
unboxed arrays.
On Aug 9, 2012 4:35 AM, "Ketil Malde" <ketil at malde.org> wrote:

> David Feuer <david.feuer at gmail.com> writes:
> > So I was thinking about a mutable array of tuples, but to avoid
> allocating
> > tuples to modify their fields, I guess I really want an immutable array
> of
> > tuples of STRefs. Just how much less efficient is this than a plain
> mutable
> > array? might it even make sense to use parallel mutable arrays? The
> thought
> > of that is disgusting to me, but at least one of the arrays could likely
> be
> > made unboxed...
> Maybe you could use a tuple of (unboxed) arrays instead?  Or if you use
> Vector instead of Array, I think tuples are member of Unbox (as long as
> the tuple elements are), and can be used directly in unboxed vectors.
> -k
> --
> If I haven't seen further, it is by standing in the footprints of giants
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