By the way, that code has a memory leak (cyclic reference ($fetch contains a reference to a closure which captures $fetch)).

Replace 

my $fetch;
$fetch = sub {
   ...
   $fetch->();
   ...
};

...
$fetch->();
...

[download]

with 

use feature qw( current_sub );

my $fetch = sub {
   ...
   __SUB__->();
   ...
};

...
$fetch->();
...

[download]

In reply to Re^3: coderef for 1 .. 2? by ikegami
in thread coderef for 1 .. 2? by ronstudio

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