[PLUG] perl question, Math::Matrix stuff
Eric Wilhelm
scratchcomputing at gmail.com
Sat May 6 04:24:16 UTC 2006
# from Russell Senior
# on Friday 05 May 2006 10:53 am:
> @output = ($subject,$s->transpose);
> print OUTPUT join(",", at output);
Sorry to leave you hanging all day. Looks like you figured it out.
Dereference to get a list.
@output = ($subject,@{$s->transpose->[0]});
Your earlier output contained ($scalar, $object) where $object would
typically print as something like the following:
$ perl -e 'print bless({}, "foo");'
foo=HASH(0x814cc20)
Or actually, this is an array ref under the hood.
$ perl -e 'print bless([], Math::Matrix);'
Math::Matrix=ARRAY(0x814cc20)
But, operator overloading on "" is on, thus the ugly dump builtin
stringification gets turned into $object->as_string().
>I never had this problem in Awk.
Does awk do operator overloading?
Don't worry. I still don't quite get it either :-)
$ perl -e 'print scalar(%{{a => b}})'
1/8
--Eric
--
"Everything goes wrong all at once."
--Quantized Revision of Murphy's Law
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