[Haskell-cafe] how unsafe is this?

I've defined a helper function to let me do regexps in functional style: sed exp str = unsafePerformIO $ do regexp - regcomp exp 0 regexec regexp str Is this always safe? or where is it not? (I'm using any one regexp more than once so it doesn't bother me that it compiles each time) --

Re: [Haskell-cafe] how unsafe is this?

benc: I've defined a helper function to let me do regexps in functional style: sed exp str = unsafePerformIO $ do regexp - regcomp exp 0 regexec regexp str Is this always safe? or where is it not? (I'm using any one regexp more than once so it doesn't bother me that it