http://qs321.pair.com?node_id=11109918


in reply to Re^8: RFC: "assignary" operator ?= : (rareness)
in thread RFC: "assignary" operator ?= :

Backwards compatibility?

Core modules need not to be written in a backaward compatible way in terms of operators they use. The core must be backward compatible wrt third party modules and existing code bases outside of itself.

perl -le'print map{pack c,($-++?1:13)+ord}split//,ESEL'