[Israel.pm] Returning a copy of an object

Shmuel Fomberg semuelf at 012.net.il
Thu Jun 7 13:23:41 PDT 2007

Yossi Itzkovich Wrote:

>In Storable documentation I found a reference to Clone module, which
>should be faster but less flexible. It's OK for me.
>In my case, there were 57,000 calls to my method. Using Data::Dumper
>+eval took  328+328=656 sec, while using Clone::clone took only 85 sec
>Big winner !
>BTW: Since it may be too much time for me even now, I guess I will
>replace at least part of the calls to a new method that will not copy
>the object - just will return a reference to the original one. I will
>use this method for internal use.

Other idea: maybe you can implement a copy-on-write scheme?
Give your client a reference to a wrapper object, that will pass trough
the reading calls, and will block/alter the writing calls. Or will copy
the relevant data to itself, and perform the call on itself.
Of course, that depend on what exactly is going in your system.


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