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- Subject: Re: A rant about backward-incompatible changes
- From: Simon Cozens <simon@...>
- Date: Tue, 14 Jul 2015 23:50:44 +0900
On 14/07/2015 23:45, Rob Kendrick wrote:
> Python 3 is not backwards compatible with Python 2.
Right, but it has a deprecation/future process. ("from __future__
> And Perl 5 is not with 4.
Actually, it is.
correctly, "Through all these developments, Perl has remained backwards
compatible with previous versions. The Perl 5 interpreter can read,
understand and execute (for the most part) programs that were written in
Perl 1, Perl 2, Perl 3 and Perl 4." And there is a test suite for this,
and a policy: