Help for this page

Select Code to Download

Select or download this

#from Anonymous Monk code
> my %allowed = qw{ ( ( ) ) ! !! & &&  };
> my $finalExpr = map { $allowed{$_} || die "not allowed '$_'" } split
+ '', $expr;

Select or download this

 print "EXPR = ",$newExpr,"\n";

...
 $newExpr =~ /^([\d\s()&|!]+)$/;
 printf "%b\n", eval $1;
}