That isn't a big deal until you do this in a sub:

return( sort @some_array );
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that is supposed to return a sorted list. And then you wonder how many elements the list contains:

my $count = get_the_sorted_list();  #Scalar context propagates to sort
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That's pretty annoying when you happen to do it, and pretty important to know about so you don't. I sure was surprised the first time I encountered it.

/J