Dear Perl Monk friends, I am primarily a C++ programmer and now learning perl. This question is to know difference between pass by value vs reference to function in perl and C++. C++ recommends pass-by-reference to avoid object copying overhead, since pass-by-value involves copy of the object being passed to function. Also, when we return an object (return-by-value) from a C++ function, it involves a temp object creation & destruction. perl also allows pass-by-reference to functions. Also, we can return values or references from perl functions. In this context, does pass-by-reference and return-by-reference help to avoid object copying overhead in perl also? I am trying to optimize my perl script so that when there are many functions, I want to reduce/eliminate the overhead of object copying while passing them to and returning from functions. I've a perl script which parses lot of data from web & it takes too long to process the data. That's why I am looking at these aspects in my script. Many thanks for clarifying my query. Best Regards ganesh

In reply to pass by value vs reference and return by value by ganeshPerlStarter

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