Xu, Lizhe wrote:
On Jun 14, 8:50 am, [EMAIL PROTECTED] (Chas Owens) wrote:
To force Data::Dumper to do the right thing for the
display you must set $Data::Dumper::Useqq to 1.  It will then use
doublequoted strings and escape characters (like \t, \n, \0 etc).

perl -MData::Dumper -e '$Data::Dumper::Useqq = 1;%h = ("\0", 3);print
Dumper(\%h);'
$VAR1 = {
          "\0" => 3
        };

The above code did not work on my XP computer, I got:
C:\>perl -MData::Dumper -e '$Data::Dumper::Useqq = 1;%h = ("\0", 3);print 
Dumper (\%h);'
Can't find string terminator "'" anywhere before EOF at -e line 1.
When I changed single quote to double quote, the result is different
C:\>perl -MData::Dumper -e "$Data::Dumper::Useqq = 1;%h = ("\0", 3);print Dumper
(\%h);"
$VAR1 = {
          "SCALAR(0x36c10)" => 3
        };
How to fix it? Thanks.

Windows accepts only double quotes as parameter delimiters. This should work
on your system:

perl -MData::Dumper -e "$Data::Dumper::Useqq = 1;%h = (qq(\0), 3);print Dumper 
(\%h);"

HTH,

Rob

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