Darn -- I forgot to switch to plain text again. I hope this does not
appear twice -- I apologize if it does!
This works and produces the desired result (I've simplified it a bit):
$default= ((((`grep pat file-name`)[0])=~/[0-9]+/)[0]);
Why does it take so many parentheses?
I don't think it should work, however.
(1) Why cannot I just index the results of the sub-process directly and
say `grep pat file-name`[0]? If Perl is confused I would think I might
need to explicitly convert it like this:
@{`grep pat file-name`}[0]
but that does not work. I think it should.
(2) I have the same question about the =~ operator -- it returns an
array too. So why cannot I just type
print @{$a=~/([0-9]+)/}[0] ?
Instead I have to type
print (($a=~/([0-9]+/)[0]);
Why are the extra outer parens required?
Thanks,
Siegfried
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