lvalueed subroutines do not know what the rvalue is - if any. They do not need to know either; what they should do is return something that can be used as an lvalue.

I don't think it's easy to mimic substr without using substr, although you might get away with a tied variable.

Abigail

In reply to Re: Recreation of lvalue substr function using lvalue subroutines by Abigail-II
in thread Recreation of lvalue substr function using lvalue subroutines by Dice

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