Haskell Platform proposal: Add the vector package

Roman Leshchinskiy rl at cse.unsw.edu.au
Mon Jul 16 12:05:56 CEST 2012

Gábor Lehel wrote:
> On Wed, Jul 4, 2012 at 5:33 PM, Roman Leshchinskiy <rl at cse.unsw.edu.au>
> wrote:
>> [...] It still uses
>> "unsafe" to distinguish between functions that do bounds checking and
>> those that don't. What would be the benefit of moving functions like
>> unsafeIndex into a separate module (and would it be called
>> Unsafe.unsafeIndex then? or would it be Unsafe.index?)? [...]
> Just to pick out this small tidbit, FWIW the Vector.index and
> Vector.Unsafe.index scheme has the advantage that you could simply
> swap out a module import to switch between bounds-checked and
> unchecked implementations.

Alas, that wouldn't really work because you would still have to import the
safe module for functions like map. I've wanted to add *.Unchecked modules
which would export exactly the same interface as the normal ones but
without bounds checking. However, it just never seemed to be worth the
extra work.


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