skaller wrote:
> 
> Indeed. If I may be so bold to observe .. you've control
> inverted. You're now driving the iteration. You've
> got rid of the HOF List.iter and implemented your own
> special one.

No, he has not. He is using fold to drive the iteration, which is just a 
more general variant of iter, that allows (1) threading some additional 
state and (2) incrementally constructing a result, although John's code 
is only making use of (1).

> The point of the code I displayed was that it
> control inverts *without* getting rid of the 
> driver loop.

I'm not sure I understand.

> Also .. a small bug in your translation: it prints "[]"
> for an empty list. The original prints "".

No, John's version does the same.

Cheers,

   - Andreas

-- 
Andreas Rossberg, rossberg@ps.uni-sb.de

Let's get rid of those possible thingies!  -- TB

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