[Haskell] Re: Haskell Digest, Vol 52, Issue 1

Rishiyur Nikhil nikhil at bluespec.com
Tue Dec 4 07:17:49 EST 2007

Simon Peyton-Jones said:

>  But since the read may block, it matters *when* you perform it.
>  For example if you print "Hello" and then read the IVar, you'll
>  block after printing; but if you read the IVar and then print, the
>  print won't come out.  If the operation was pure (no IO) then you'd
>  have a lot less control over when it happened.

But this is true of any expression in a non-strict language.

Why the special treatment of IVars?

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