Hoyt: Structural pattern matching in Python 3.10
Ben Hoyt has published a critical overview of the
Python 3.10 pattern-matching feature.
As shown above, there are cases
where match really shines. But they are few and far between, mostly when
handling syntax trees and writing parsers. A lot of code does have
if ... elif chains, but these are often either plain switch-on-
value, where elif works almost as well, or the conditions they’re testing
are a more complex combination of tests that don’t fit into case patterns
(unless you use awkward case _ if cond clauses, but
that’s strictly worse than elif).
(Pattern matching has been covered here
as well).
[$] More Rust concepts for the kernel
The first day of the Kangrejos (Rust for Linux) conference
introduced the project and what it was trying to accomplish; day 2 covered
a number of core Rust concepts and their relevance to the kernel. On the third
and final day of the conference, Wedson Almeida Filho delved deeper into how
Rust can be made to work in the Linux kernel, covered some of the lessons that
have been learned so far, and discussed next steps with a number of kernel
developers.
Security updates for Monday
Security updates have been issued by Debian (gnutls28,
nettle, nextcloud-desktop, and openssl1.0), Fedora (dovecot-fts-xapian, drupal7,
ghostscript, haproxy, libtpms, lynx, wordpress, and xen), openSUSE (xen), Red
Hat (rh-ruby27-ruby), and SUSE (openssl, openssl1, and xen).
Kernel prepatch 5.15-rc2
The 5.15-rc2 kernel prepatch is out for testing.
So
I've spent a fair amount of this week trying to sort out all the odd warnings,
and I want to particularly thank Guenter Roeck for his work on tracking where
the build failures due to -Werror come from.
Is it done? No. But on the
whole I'm feeling fairly good about this all, even if it has meant that I've
been looking at some really odd and grotty code. Who knew I'd still worry about
some odd EISA driver on alpha, after all these years? A slight change of pace
;)
A few weekend stable kernels
The relatively large 5.14.6, 5.13.19, and 5.10.67 stable
kernel updates have been released; each contains another set of important fixes.
Note that this is the final update for the 5.13.x series.
