On 3/22/06, Manuel M T Chakravarty
It does happen...sometimes! The trouble is that for certain types of programs (eg, numeric intensive ones), you absolutely need that optimisation to happen. Without strict tuples, this means, you have to dump the intermediate code of the compiler and inspect it by hand to see whether the optimisation happens. If not, you have to tweak the source to nudge the compiler into recognising that it can optimise. Of course, all your efforts may be wasted when the next version of the compiler is released or when you have to change your code.
That kind of tweaking isn't required to simulate this. "a `seq` b
`seq` (a, b)" is perfectly sufficient, and is quite commonly seen in
such programs.
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Taral