On Tue, 31 Mar 2009 04:49:17 +1000, John W. Krahn <jwkr...@shaw.ca> wrote:
Or instead of using arrays you could store the 1s and 0s in strings:
$ perl -le'
my $string = "10110111001";
print $-[0] while $string =~ /0/g;
'
1
4
8
9
Hi John,
Could you explain how the above code works please? I looked up perl -l in
man perl and the argument is for octal. Why is that necessary?
I also looked up $-, which is the variable for the "number of lines left
on the page". Is this an array, since you use it as $-[0]?
Thank you,
Dave
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