I thought about that too but one problem is order of evaluation. In order to provide the rvalue to the sub, you would have to evaluate the right hand side before the left hand side and that's odd or possibly even bad (I'm not exactly sure yet).

I've also seen Larry Wall say somewhere that tieing is the way you will have to do this in Perl 6 (although it will be considerably more straight forward that in Perl 5)

In reply to Re^2: Experimenting with Lvalue Subs by fergal
in thread Experimenting with Lvalue Subs by Limbic~Region

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