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Re^2: Small troubles with referencesby injunjoel (Priest) |
on Feb 09, 2006 at 21:00 UTC ( [id://529194]=note: print w/replies, xml ) | Need Help?? |
Greetings, Just to help illustrate how Perl 'flattens' or as I try to think of it (thanks to diotalevi) 'list-ifies' subroutine arguments consider the following The Output Notice in the output of the first call the keys and values from %hash get tacked onto the end of the values in @array as if the entire thing were one huge list. Now imagine trying to get keys or values from %hash? Not likely nor easy. In the second and third examples we pass one reference but the argument list is still just a list. The final example is much cleaner. If you were confused about what you originally passed into the sub your could always call ref and find out; otherwise there is no way to tell if you are passed a 'list-ified' hash or array. -InjunJoel
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