[Haskell-cafe] Boxed Mutable Arrays

Brad Larsen brad.larsen at gmail.com
Mon Dec 14 14:53:32 EST 2009

Is anyone working on fixing ticket #650
<http://hackage.haskell.org/trac/ghc/ticket/650>?  In short, STArray
and the garbage collector don't play well together, resulting in array
updates being non-constant time operations.  This bug makes it very
difficult/impossible to write efficient array algorithms that depend
upon mutation in Haskell.

On another note, does this (or perhaps better phrased, will this) bug
also affect Data Parallel Haskell?

I would really like to see highly efficient, mutable, boxed arrays in
Haskell!  Unfortunately, I don't have the know-how to fix Ticket 650.


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