G'day all.
Quoting Josef Svenningsson <[EMAIL PROTECTED]>:
> In what sense is it wrong, and in what sense does this example show that?
The time that you want to use $! is when you want some argument to some
function to be strict. Unfortunately, $! and $ have different
associativities to normal function application, requiring you to introduce
readability-imparing parentheses if the strict argument is not the last
one:
testR2' a n = (testR2' $! (a+n)) (n-1)
If $! and $ were both left-associative, you could write this instead:
testR2' a n = testR2' $! (a+n) $ (n-1)
Cheers,
Andrew Bromage
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