[Haskell-cafe] exceptions vs. Either
Malcolm.Wallace at cs.york.ac.uk
Wed Aug 4 06:25:43 EDT 2004
Ketil Malde <ketil+haskell at ii.uib.no> writes:
> Hmm...if I run it through CPP and
> #define HEAD (\x -> if null x then error ("__FILE__:__LINE__") else head x)
> is the __LINE__ resolved at the place of declaration or at the place of usage?
According to the C standard, at the position of /usage/ of the macro `HEAD'.
Incidentally, cpphs does not yet implement __FILE__ or __LINE__
replacements. Is their usage widespread amongst Haskell users?
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