Perl 5.34 is released

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Re: Perl 5.34 is released by syphilis (Archbishop) on May 22, 2021 at 12:57 UTC
perldelta The entry that pleases me most is: `perl can now be built with USE_QUADMATH on MS Windows using (32-bit an +d 64-bit) mingw-w64 ports of gcc.` [download] And that's not something that's experimental !! Of course, some are not interested in this. (Others, even less so ;-) Cheers, Rob	[reply] [d/l]
Re^2: Perl 5.34 is released by Tux (Canon) on May 24, 2021 at 08:15 UTC
You're welcome. I've been adding tickets to CPAN modules for quadmath since it was enabled. I run it in production on my laptop and fed back all issues to p5p and was glad to see all were dealt with. To me, the fix to `pack "D"` to cope with quadmath was the most important one as it broke installing modules down the chain. Thanks leont for fixing that! Enjoy, Have FUN! H.Merijn	[reply] [d/l]
Re^3: Perl 5.34 is released by syphilis (Archbishop) on May 24, 2021 at 11:59 UTC
To me, the fix to pack "D" to cope with quadmath was the most important one as it broke installing modules down the chain. Thanks leont for fixing that! I absolutely agree that this needed to be fixed - but I still have reservations about the actual fix that was implemented, and I raised those reservations (which were dismissed) in the discussions of that issue. In perl 5.32 and earlier, if you are running a perl whose nvtype was double, and you try to pack/unpack using the "D" template, here's what you get: `C:\>perl -wle "$d = unpack 'D>', pack 'D>', 2.9; print $d" Invalid type 'D' in pack at -e line 1.` [download] I regard that as a sane and sensible result. Now, thanks to that fix, on a perl-5.34.0 whose nvtype is double, we get: `C:\>perl -wle "$ld = unpack 'D>', pack 'D>', 2.9; print $ld" 2.9` [download] with no mention that $ld is not a long double, even though a "long double" has been specifically requested via the "D" template. I think the view is that no-one is going to make that mistake. But I still wonder why we would want to allow the use of "D" template on a perl whose nvtype is double, given that the "D" template is entirely useless and pointless in that circumstance. Anyway ... it's done now, and I shall live it with it. The "pack" documentation for "D" now, as of perl-5.34.0, looks questionable to me: `D A float of long-double precision in native format. (Long doubles are available only if your system supports long double values. Raises an exception otherwise. Note that there are different long double formats.)` [download] Do you really think that accurately describes the behaviour of the "D" template on a perl-5.34.0 with nvtype of double ? Cheers, Rob	[reply] [d/l] [select]
Re: Perl 5.34 is released by stevieb (Canon) on May 21, 2021 at 16:35 UTC
I'll be damned... try/catch! Yay!	[reply]
Re^2: Perl 5.34 is released by kcott (Archbishop) on May 22, 2021 at 09:20 UTC
G'day stevieb, You may already know what follows. This information is for those who don't. The try/catch feature is experimental. Any usage should be preceded by these lines (in the order shown): `no warnings 'experimental::try'; use feature 'try';` [download] Avoid all experimental features, including this one, in any production-grade code. See "perlsyn: Try Catch Exception Handling" for more details. — Ken	[reply] [d/l]
Re^3: Perl 5.34 is released by ikegami (Patriarch) on May 24, 2021 at 17:34 UTC
Simpler: `use experimental qw( try );` [download] Seeking work! You can reach me at ikegami@adaelis.com	[reply] [d/l]
Re^4: Perl 5.34 is released by kcott (Archbishop) on May 25, 2021 at 01:37 UTC
Re: Perl 5.34 is released by GrandFather (Saint) on May 23, 2021 at 10:10 UTC
A first class try/catch will be nice if it becomes a permanent feature, but I love `# qr/{,n}/ is now accepted` [download] Optimising for fewest key strokes only makes sense transmitting to Pluto or beyond	[reply] [d/l]
Re^2: Perl 5.34 is released (bad code example) by LanX (Saint) on May 23, 2021 at 12:14 UTC
`# qr/{,n}/ is now accepted` I find this code very unfortunate, what does it mean if the empty string can be repeated n times? This could better be either a syntax error. But I'm rather expecting Perl not reading the curlies as metas. from the delta An empty lower bound is now accepted for regular expression quantifiers, like {,3}. so `{,3}` is the same like `{0,3}` or `{1,3}` ? please elaborate! edit to demonstrate my point `DB<8> $re = qr/{0,3}/ DB<9> p "" =~ $re DB<10> p "{0,3}" =~ $re 1 DB<11> p $] 5.032001 DB<12> DB<13> use warnings; use strict; my $re = qr/{,3}/ DB<14>` [download] the curlies are taken literally! `qr/{,3}/` was always allowed. Cheers Rolf _{(addicted to the Perl Programming Language :) Wikisyntax for the Monastery}	[reply] [d/l] [select]
Re^3: Perl 5.34 is released (bad code example) by haj (Vicar) on May 23, 2021 at 14:26 UTC
what does it mean if the empty string can be repeated n times? It means "We kept the heading short, feel free to split hairs." The single line below that heading reads: `An empty lower bound is now accepted for regular expression quantifiers, like {,3}.` But I'm rather expecting Perl not reading the curlies as metas. Correct. A open curly was interpreted literally in regular expressions in a lot of places in old Perl versions. Since Perl 5.26 some of these uses were forbidden, and Perl 5.28 made some of these uses non-fatal again. Relevant reading: perldelta 5.26: Unescaped literal "{" characters in regular expression patterns are no longer permissible perldiag 5.26: Unescaped left brace in regex is illegal here in regex; marked by <-- HERE in m/%s/ perldelta 5.28: Some uses of unescaped "{" in regexes are no longer fatal so `{,3}` is the same like `{0,3}` or `{1,3}` ? Same as `{0,3}`.	[reply]
Re^4: Perl 5.34 is released (bad code example) by LanX (Saint) on May 23, 2021 at 14:34 UTC
Re^5: Perl 5.34 is released (perlbug filed) by LanX (Saint) on May 23, 2021 at 17:42 UTC
Some notes below your chosen depth have not been shown here
Re^3: Perl 5.34 is released by 1nickt (Canon) on May 23, 2021 at 12:36 UTC
"qr/{,3}/ was always allowed" Nope. `$ perl -E 'say $]' 5.032001` [download] `$ perl -Mstrict -wE 'my $str = "foobar"; say 1 if $str =~ /[o]{1,2}/' 1` [download] `$ perl -Mstrict -wE 'my $str = "foobar"; say 1 if $str =~ /[o]{,2}/' Unescaped left brace in regex is illegal here in regex; marked by <-- +HERE in m/[o]{ <-- HERE ,2}/ at -e line 1.` [download] The way forward always starts with a minimal test.	[reply] [d/l] [select]
Re^4: Perl 5.34 is released by LanX (Saint) on May 23, 2021 at 12:41 UTC
Re^5: Perl 5.34 is released by 1nickt (Canon) on May 23, 2021 at 12:53 UTC
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Re: Perl 5.34 is released by xiaoyafeng (Deacon) on May 24, 2021 at 07:58 UTC
It looks like a preversion of perl7. keep it up! I am trying to improve my English skills, if you see a mistake please feel free to reply or /msg me a correction	[reply]
Re^2: Perl 5.34 is released by bliako (Monsignor) on May 24, 2021 at 13:16 UTC
i read `perversion` and got me puzzled for a while! (nothing wrong with your post but with my eyes)	[reply] [d/l]
Re^3: Perl 5.34 is released by xiaoyafeng (Deacon) on May 25, 2021 at 01:13 UTC
That's why English is a difficult language to me! lol I am trying to improve my English skills, if you see a mistake please feel free to reply or /msg me a correction	[reply]
Re^2: Perl 5.34 is released by ikegami (Patriarch) on May 24, 2021 at 17:52 UTC
...except all the experimental features that were going to be on by default in Perl 7 (e.g. refaliasing) were left experimental. They're good enough to not only be safe but to be on by default, but they're still experiemental!? Seeking work! You can reach me at ikegami@adaelis.com	[reply]
Re^3: Perl 5.34 is released by xiaoyafeng (Deacon) on May 25, 2021 at 01:19 UTC
agree! I think it implicitly means perl7 won't be released before 5.40? I am trying to improve my English skills, if you see a mistake please feel free to reply or /msg me a correction	[reply]
Re^4: Perl 5.34 is released by ikegami (Patriarch) on May 25, 2021 at 22:27 UTC


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Perl 5.34 is released

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