It might be a stupid question but what does the \Q does in this context??

Has in my country they said "The one that doesn´t know is like the one that cannot see!!"

from the perlre man page

    \Q    quote (disable) pattern metacharacters till \E

look at this code:

$comm = '(xyz';
$line = '123(xyz)456';

if ($line =~ /$comm/) {     #error! same as  $line =~ /(xyz/  which ha
+s an unmatched '('
 # do stuff
}
if ($line =~ /\Q$comm/) {   #no error! same as  $line =~ /\(xyz/  -- '
+(' is escaped
 # do stuff
}
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--

flounder

Hmm..


Ok.. i get it!! Thank you very much!

nofernandes

And I'd like to add that `perldoc perlop' says:

\Q          quote non-word characters till \E

Which means

$a = "\Qhello! there? How> what< now%";
die $a;
__END__
hello\!\ there\?\ How\>\ what\<\ now\% at - line 2.
[download]

MJD says "you can't just make shit up and expect the computer to know what you mean, retardo!"

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