I notice grinder considered adder, I am not sure that I agree to arbitarily reaping homework nodes
My apologies. It was a flippant consideration and I really wouldn't expect it to be reaped. I was just a little surprised that no-one caught it before. That happened before I read this thread.
As for helping people who don't help themselves, consider supplying code that looks good at first glance, but is actually dreadful. I still get a giggle when I think of the reponse I posted to this thread. It was a question that asked to print out combinations of an array, and I came up with something that a) scales woefully and b) consumes prolifligate amounts of memory. It took something like 8 days CPU time to generate all combinations of a set of 10 elements (even though it spits out the solution to 4 elements snappily enough).:o)
print@_{sort keys %_},$/if%_=split//,'= & *a?b:e\f/h^h!j+n,o@o;r$s-t%t#u'
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