Actually using the comma operator is generally frowned on in both C/C++ and Perl. As your sample somewhat demonstrates it leads to fairly opaque code and can produce some very subtle bugs. A better technique is to put the several lines into a sub and call that in the while loop expression. See Re: Use of uninitialized value in addition for an example.

True laziness is hard work

In reply to Re^2: Use of uninitialized value in addition by GrandFather
in thread Use of uninitialized value in addition by Solarplight

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