[Haskell-cafe] Re: [Haskell] Top Level <-

Bryan O'Sullivan bos at serpentine.com
Fri Aug 29 19:44:38 EDT 2008

On Fri, Aug 29, 2008 at 4:33 PM, Dan Weston <westondan at imageworks.com> wrote:
> C++ faced this very issue by saying that with global data, uniqueness of
> initialization is guaranteed but order of evaluation is not.

In C++ circles, this is referred to as the "static initialization
order fiasco", and it is a frequent cause of crashes that are very
difficult to debug.


I think it would be fair to say that C++ pushed this problem off to
every user of the language. I haven't seen a coherent description of
what the semantics of top-level "<-" should be, but avoidance of
widespread swearing would be at the top of my list of requirements.

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