You seem to be getting different results than mdillon
. That's the problem with relying on undocumented details. If you write a sub starting with my ($a,$b,$c,$d)=@_;
and then calculate defaults if undef or use the undef value for some special meaning, then leaving off args naturally
gives the same results. But if you write if (scalar(@_) < 4) ...
to do something different, then using undef doesn't give the same effect.
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