I thought I had seen somethink about this, but does Perl reserve a block of memory upon startup for user variables? Or are user variables always allocated when they are created/initialized with Newx, Newxz ?
From some benchmarks it seems that Perl does set some memory aside to avoid requesting memory from the OS all the time, and I thought I had seen some material about how to modify this "scratch space" but I could be very wrong or senile.
submitted by /u/ReplacementSlight413
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I have noticed the Perl Cookbook, 2nd Edition as an outstanding reference. How about the work Perl by Example, Fifth Edition? How does it compare? Would you recommend it as a reference as well?
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Hi Everyone.
I am learning from the book "Learning Perl" and so far the journey is thankfully going great!
One thing noticed about Perl is that although the developer community here is smaller than other mainstream languages it feels very tight-knit. Is that just me or were you also drawn to Perl because of the strong community responsiveness to each other?
submitted by /u/fosres
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(dix) 9 great CPAN modules released last week
Updates for great CPAN modules released last week. A module is considered great if its favorites count is greater or equal than 12. App...niceperl.blogspot.com
UUID::Tiny has a weird way of getting a random 32bit integer using 2x random 16 bit integers bitwise OR'd together:
sub _rand_32bit { _init_globals(); my $v1 = int(rand(65536)) % 65536; my $v2 = int(rand(65536)) % 65536; return ($v1 << 16) | $v2; }
Anyone know why you would do this instead of just: my $rand = int(rand(2**32));
? Also why the modulus, isn't it redundant?
submitted by /u/scottchiefbaker
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- YouTube
Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.www.youtube.com
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Commits · PerlToolsTeam/psc
List of Perl Steering Council meetings. Contribute to PerlToolsTeam/psc development by creating an account on GitHub.GitHub
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- YouTube
Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.www.youtube.com
submitted by /u/briandfoy [link] [comments] |
- YouTube
Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.www.youtube.com
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Deploying Dancer Apps (Addendum) - Perl Hacks
Back in May, I wrote a blog post about how I had moved a number of Dancer2 applications to a new server and had, in the process, created a standardised procedure for deploying Dancer2 apps.Dave Cross (Perl Hacks)
I have a Mac M1 chip laptop.
While I have managed to install a couple of modules, most fail to install.
I tried perlbrew, but that was a struggle to even get it to install perl itself, but when it was installed it wasn't working the way I needed it to.
Just wondering if I am missing something with CPAN or if this is an issue because it's an M1 chip?
submitted by /u/MrCosgrove2
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How to use perl v5.40's boolean builtins in Mojo::Pg queries
The final installment in the series:
"The-Quest-For-Performance" from my blog Killing It with #perl
Discussing #python #numpy #numba, #rstats #openMP enhancements of Perl code and #simd
Bottom line: I will not be migrating to Python anytime soon.
Food for thought: The Perl interpreter (and many of the modules) are deep down massive C programs. Perhaps one can squeeze real performance kicks by looking into alternative compilers, compiler flags and pragmas ?
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The Quest for Performance Part IV : May the SIMD Force be with you
At this point one may wonder how numba, the Python compiler around numpy Python code, delivers a performance premium over numpy.Killing-It-with-PERL
I would be interested to know why you chose Perl and how long you have been using it and what for.
I have just returned to Perl after many years away, think decades rather than a couple of years. Consider me a noob as I've long forgotten anything I knew about the language.
I run a small home webserver, Apache on Windows 10 with Strawberry Perl, and recently started some projects starting with moving away with things like Google Analytics and going back to some old log analyzers such as AWStats, which is still being maintained, and W3Perl, which is not. Even more recently I have started using Ringlink.
Perl is still being developed, Strawberry, Active State, CPAN etc. but lost out to PHP and Python. Just like COBOL, I can easily imagine thousands of systems depend on Perl.
submitted by /u/brisray
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Download & Install Perl - ActiveState
Download Perl 5.32 and 5.28 from ActiveState & get precompiled Perl distribution. ActiveState Perl is free to download.ActiveState
Have been using the official MongoDB driver to date (https://metacpan.org/dist/MongoDB) but its obviously EOL and now I can't get it to work with perl v.540 on OSX.
For those interested it fails on BSON::XS and I cannot force install either.
cp XS/XS.xs blib/lib/BSON/XS/XS.xs Running Mkbootstrap for XS () chmod 644 "XS.bs" "/usr/local/bin/perl" -MExtUtils::Command::MM -e 'cp_nonempty' -- XS.bs blib/arch/auto/BSON/XS/XS.bs 644 "/usr/local/bin/perl" "/usr/local/lib/perl5/5.40.0/ExtUtils/xsubpp" -typemap '/usr/local/lib/perl5/5.40.0/ExtUtils/typemap' xs/XS.xs > xs/XS.xsc mv xs/XS.xsc xs/XS.c cc -c -I. -Ibson -fno-common -DPERL_DARWIN -mmacosx-version-min=14.5 -DNO_THREAD_SAFE_QUERYLOCALE -DNO_POSIX_2008_LOCALE -fno-strict-aliasing -pipe -fstack-protector-strong -I/usr/local/include -D_GNU_SOURCE -DMONGO_USE_64_BIT_INT -DBSON_COMPILATION -Wno-error=implicit-function-declaration -O3 -DVERSION=\"v0.8.4\" -DXS_VERSION=\"v0.8.4\" -o xs/XS.o "-I/usr/local/lib/perl5/5.40.0/darwin-2level/CORE" xs/XS.c xs/XS.xs:216:3: warning: '(' and '{' tokens introducing statement expression appear in different macro expansion contexts [-Wcompound-token-split-by-macro] PUSHMARK (SP); ^~~~~~~~~~~~~ /usr/local/lib/perl5/5.40.0/darwin-2level/CORE/pp.h:120:5: note: expanded from macro 'PUSHMARK' STMT_START { \ ^~~~~~~~~~ ./ppport.h:4305:31: note: expanded from macro 'STMT_START' # define STMT_START (void)( /* gcc supports ``({ STATEMENTS; })'' */ ^ xs/XS.xs:216:3: note: '{' token is here PUSHMARK (SP); ^~~~~~~~~~~~~ /usr/local/lib/perl5/5.40.0/darwin-2level/CORE/pp.h:120:16: note: expanded from macro 'PUSHMARK' STMT_START { \ ^ xs/XS.xs:216:3: warning: '}' and ')' tokens terminating statement expression appear in different macro expansion contexts [-Wcompound-token-split-by-macro] PUSHMARK (SP); ^~~~~~~~~~~~~ /usr/local/lib/perl5/5.40.0/darwin-2level/CORE/pp.h:129:5: note: expanded from macro 'PUSHMARK' } STMT_END ^
With that said, whats the most appropriate alternative out there?
submitted by /u/kosaromepr
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A couple of data/compute intensive examples using Perl Data Language (#PDL), #OpenMP, #Perl, Inline and #Python (base, #numpy, #numba). Kind of interesting to see Python eat Perl's dust and PDL being equal to numpy.
OpenMP and Perl's multithreaded #PDL array language were the clear winners here.
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The Quest for Performance Part I : Inline C, OpenMP and PDL
Sometimes, one’s code must simply perform and principles, such as aeasthetics, “cleverness” or commitment to a single language solution simply go out of the window.Killing-It-with-PERL
Hello all. I installed Perlbrew to try it out using Perl modules without admin rights. My machine is Linux EOS. When I run a simple perl script it gives error Cant locate Modern/Perl.pm in \@INC. How do I make Emacs know that I am using perlbrew and not system Perl? Or how do add the perlbrew PATH to global \@INC? I also have setup Devel::PerlySense inside Emacs following the module documentation. I installed some modules using cpanm client. I'm new to Perl and Emacs and sometimes I'm lost n doesnt know what I'm doing lol 😀 Appreciate your pointing me to the right direction. Below are some log details:
Can't locate Modern/Perl.pm in u/INC (you may need to install the Modern::Perl module) (@INC entries checked: /usr/lib/perl5/5.38/site_perl /usr/share/perl5/site_perl /usr/lib/perl5/5.38/vendor_perl /usr/share/perl5/vendor_perl /usr/lib/perl5/5.38/core_perl /usr/share/perl5/core_perl) at ./read_input_stdin line 4.
BEGIN failed--compilation aborted at ./read_input_stdin line 4.
❯ perlbrew info
Current perl:
Name: perl-blead
Path: /home/user/perl5/perlbrew/perls/perl-blead/bin/perl
Config: -de -Dprefix=/home/user/perl5/perlbrew/perls/perl-blead -Dusedevel -Aeval:scriptdir=/home/user/perl5/perlbrew/perls/perl-blead/bin
Compiled at: Jul 6 2024 10:50:31
perlbrew:
version: 0.98
ENV:
PERLBREW_ROOT: /home/user/perl5/perlbrew
PERLBREW_HOME: /home/user/.perlbrew
PERLBREW_PATH: /home/user/perl5/perlbrew/bin:/home/user/perl5/perlbrew/perls/perl-blead/bin
PERLBREW_MANPATH: /home/user/perl5/perlbrew/perls/perl-blead/man
❯ perl --version
This is perl 5, version 41, subversion 2 (v5.41.2 (c5df4fd1012cc64d1b3e19c87bf8c51d4f3f90d6)) built for x86_64-linux
❯ perlbrew list-modules | grep modern
Modern::Perl
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Combining calendars - Perl Hacks
One of the most popular posts I've written in recent months was the one where I talked about all the pointless personal projects I have. The consensus in the many comments I received was that anything you find useful isn't pointless.Dave Cross (Perl Hacks)
Anyone have any insight? https://www.perlmonks.org/r/perl/.rss
submitted by /u/saltyreddrum
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