others have said you ought to read perlre, and you should do that
but you can use \x20, whera as hex(20) is 32, and use of \x20 in a regex will match a space (same if you print "\x20") 
perl -e " print 1 if q{ } =~ /\x20/ "

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In reply to Re: Space and the /x modifier by PodMaster
in thread Space and the /x modifier by Django

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