在mule esb中使用DataMapper使用自定义分隔符（空格或制表符）编写CSV文件(Writing CSV file using custom Delimiter (space or tab) using DataMapper in mule esb)

 正如他们在评论中所说，您可以使用SDBM_File模块。 例如： 
 
#!/usr/bin/perl 
use strict;
use warnings;
use v5.14;

use Fcntl;
use SDBM_File;

my $filename = "dbdb";

my %h;

tie %h, 'SDBM_File', $filename, O_RDWR|O_CREAT, 0666
    or die "Error: $!\n";

# To run only one time to fill the dbdb file.
# Next time you may delete this line and
# the output will be the same "16,40".    
$h{$_} = $_ * 2 . "," . $_ * 5  for 1..100;

say $h{8};

untie %h;
 
 产量：16,40 

As they said in the comments you may use SDBM_File module. For example:
 
#!/usr/bin/perl 
use strict;
use warnings;
use v5.14;

use Fcntl;
use SDBM_File;

my $filename = "dbdb";

my %h;

tie %h, 'SDBM_File', $filename, O_RDWR|O_CREAT, 0666
    or die "Error: $!\n";

# To run only one time to fill the dbdb file.
# Next time you may delete this line and
# the output will be the same "16,40".    
$h{$_} = $_ * 2 . "," . $_ * 5  for 1..100;

say $h{8};

untie %h;
 
Output: 16,40