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  1. or download this
    #! perl
    use strict;
    ...
    print "\$s   = $s\n";
    print "\%dic = ";
    dd     \%dic;
    
  2. or download this
    19:34 >perl 1011_SoPW.pl
    Use of uninitialized value within %dic in substitution iterator at 101
    +1_SoPW.pl line 10.
    ...
    %dic = { "aaa\\s+bbb" => "new" }
    
    19:34 >