[vector] #27: Zero out an unboxed array

[vector]

#27: Zero out an unboxed array
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Reporter:  jbapple      |       Owner:     
    Type:  enhancement  |      Status:  new
Priority:  minor        |   Milestone:     
 Version:  0.6          |    Keywords:     
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 For all of the unboxed types, 0 makes sense as a value, and can be
 represented by bytes with no bits set. Initializing a Vector someType
 using newWith, however, sets each group of bits or bytes one someType at a
 time. I suspect memset would be substantially faster.

 I suggest, for unboxed types only, an initializer named something like
 newZero. This might work for Storable as well.

 Because newWith is slower than I would like, I am using new rather than
 newWith and using [http://research.swtch.com/2008/03/using-uninitialized-
 memory-for-fun-and.html a trick] to make sure I don't actually use any
 uninitialized values.

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Ticket URL: <http://trac.haskell.org/vector/ticket/27>
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