On Mon, 2006-10-02 at 10:36 +1000, Jonathan Kelly wrote:
> fun jseek: file * long * int -> int = 'std::fseek($1, $2, $3)';
> val x = jseek(fil, 0L, 2);
> // uncommenting out the following to stop previous being elided
> //print "jseek returned ";
> //print x;
> //endl;
Two things to notice. First, jseek is a fun not a gen,
so the compiler assumes it is a pure function.
Second, you're initialising an unused val from the
function .. so Felix is eliding it. Just think you'd
written:
val x = sin y;
and not used x .. what's the point wasting time calculating
sin y?
You can solve this three ways:
(a) make x a var (iable)
(b) make jseek a gen (erator)
(c) write
ignore(jseek(fil,0L,2))
--
John Skaller <skaller at users dot sf dot net>
Felix, successor to C++: http://felix.sf.net
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