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'

In reply to Re^9: RFC: "assignary" operator ?= : (backward compatibility) by shmem
in thread RFC: "assignary" operator ?= : by richard.sharpe

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