Aside from the Perl project itself what were the Perl projects published that had a positive impact in the world--whether in the tech industry or even for hackers and hobbyists. I ask to better understand what Perl is and is not useful for.

submitted by /u/fosres
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So I came across a book named "Higher-Order Perl" which teaches how to apply functional coding concepts to complete tasks in Perl. Have you used the book's techniques in your production-deployed projects? If so how did the book's advice help?

submitted by /u/fosres
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Hi everyone. I am still researching how to benefit from Perl as a security engineer. I heard you can use Perl to test for security exploits in codebases? What have you used Perl for in he past? What did you find of most helpful for in your coding journey?

submitted by /u/fosres
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I have been a Perl guy for 30+ years and have had the great idea to upgrade the Perl version of my large Perl APP to 5.40; after a lot of fiddeling around and overriding some Makefile.PL files I got the code and all required libraries to work on an AlmaLinux 9.4. Hoewever I am stuck on getting it to run locally on MacOS 14.5.

The two libraries currently roadblocking are Net::SSL and DBD::MariaDB. I am not fluent enough in C to understand how and if I can get things sorted; anyone able to help? Full compile errors below.

Net::SSL

cpanm (App::cpanminus) 1.9018 on perl 5.040000 built for darwin-2level Work directory is /Users/administrator/.cpanm/work/1721974215.35063 You have make /usr/bin/make You have LWP: 6.77 You have /usr/bin/tar: bsdtar 3.5.3 - libarchive 3.5.3 zlib/1.2.12 liblzma/5.4.3 bz2lib/1.0.8 You have /usr/bin/unzip Searching Net::SSL () on cpanmetadb ... --> Working on Net::SSL Fetching http://www.cpan.org/authors/id/N/NA/NANIS/Crypt-SSLeay-0.72.tar.gz -> OK Unpacking Crypt-SSLeay-0.72.tar.gz Entering Crypt-SSLeay-0.72 Checking configure dependencies from META.json Checking if you have Getopt::Long 0 ... Yes (2.57) Checking if you have ExtUtils::CBuilder 0.280205 ... Yes (0.280240) Checking if you have Try::Tiny 0.19 ... Yes (0.31) Checking if you have Path::Class 0.26 ... Yes (0.37) Configuring Crypt-SSLeay-0.72 Running Makefile.PL Argument "pro" isn't numeric in numeric ge (>=) at /usr/local/lib/perl5/5.40.0/ExtUtils/MM_Unix.pm line 47. Found libraries 'ssl, crypto, z' *** THIS IS NOT AN ERROR, JUST A MESSAGE FOR YOUR INFORMATION *** Do you really need Crypt::SSLeay? Starting with version 6.02 of LWP, https support was unbundled into LWP::Protocol::https. This module specifies as one of its prerequisites IO::Socket::SSL which is automatically used by LWP::UserAgent unless this preference is overridden separately. IO::Socket::SSL is a more complete implementation, and, crucially, it allows hostname verification. Crypt::SSLeay does not support this. At this point, Crypt::SSLeay is maintained to support existing software that already depends on it. However, it is possible that your software does not really depend on Crypt::SSLeay, only on the ability of LWP::UserAgent class to communicate with sites over SSL/TLS. If are using version LWP 6.02 or later, and therefore have installed LWP::Protocol::https and its dependencies, and do not explicitly use Net::SSL before loading LWP::UserAgent, or override the default socket class, you are probably using IO::Socket::SSL and do not really need Crypt::SSLeay. Before installing Crypt::SSLeay, you may want to try specifying a dependency on LWP::Protocol::https. ================================================================================ Output from '/Users/administrator/.cpanm/work/1721974215.35063/Crypt-SSLeay-0.72/openssl-version': OpenSSL 3.3.1 4 Jun 2024 30300010 ================================================================================ Checking if your kit is complete... Looks good Generating a Unix-style Makefile Writing Makefile for Crypt::SSLeay Writing MYMETA.yml and MYMETA.json -> OK Checking dependencies from MYMETA.json ... Checking if you have Try::Tiny 0.19 ... Yes (0.31) Checking if you have Test::More 0.19 ... Yes (1.302199) Checking if you have ExtUtils::MakeMaker 0 ... Yes (7.70) Checking if you have LWP::Protocol::https 6.02 ... Yes (6.14) Checking if you have MIME::Base64 0 ... Yes (3.16_01) Building and testing Crypt-SSLeay-0.72 cp lib/Crypt/SSLeay/Conn.pm blib/lib/Crypt/SSLeay/Conn.pm cp SSLeay.pm blib/lib/Crypt/SSLeay.pm cp lib/Crypt/SSLeay/Err.pm blib/lib/Crypt/SSLeay/Err.pm cp lib/Crypt/SSLeay/MainContext.pm blib/lib/Crypt/SSLeay/MainContext.pm cp lib/Crypt/SSLeay/Version.pm blib/lib/Crypt/SSLeay/Version.pm cp lib/Net/SSL.pm blib/lib/Net/SSL.pm cp lib/Crypt/SSLeay/CTX.pm blib/lib/Crypt/SSLeay/CTX.pm cp lib/Crypt/SSLeay/X509.pm blib/lib/Crypt/SSLeay/X509.pm Running Mkbootstrap for SSLeay () chmod 644 "SSLeay.bs" "/usr/local/bin/perl" -MExtUtils::Command::MM -e 'cp_nonempty' -- SSLeay.bs blib/arch/auto/Crypt/SSLeay/SSLeay.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' -typemap '/Users/administrator/.cpanm/work/1721974215.35063/Crypt-SSLeay-0.72/typemap' SSLeay.xs > SSLeay.xsc mv SSLeay.xsc SSLeay.c cc -c -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 -Wno-error=implicit-function-declaration -O3 -DVERSION=\"0.72\" -DXS_VERSION=\"0.72\" "-I/usr/local/lib/perl5/5.40.0/darwin-2level/CORE" SSLeay.c SSLeay.xs:152:31: warning: call to undeclared function 'SSLv3_client_method'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] ctx = SSL_CTX_new(SSLv3_client_method()); ^ SSLeay.xs:152:31: error: incompatible integer to pointer conversion passing 'int' to parameter of type 'const SSL_METHOD *' (aka 'const struct ssl_method_st *') [-Wint-conversion] ctx = SSL_CTX_new(SSLv3_client_method()); ^~~~~~~~~~~~~~~~~~~~~ /usr/local/include/openssl/ssl.h:1634:47: note: passing argument to parameter 'meth' here __owur SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth); ^ SSLeay.xs:157:31: warning: call to undeclared function 'SSLv2_client_method'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] ctx = SSL_CTX_new(SSLv2_client_method()); ^ SSLeay.xs:157:31: error: incompatible integer to pointer conversion passing 'int' to parameter of type 'const SSL_METHOD *' (aka 'const struct ssl_method_st *') [-Wint-conversion] ctx = SSL_CTX_new(SSLv2_client_method()); ^~~~~~~~~~~~~~~~~~~~~ /usr/local/include/openssl/ssl.h:1634:47: note: passing argument to parameter 'meth' here __owur SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth); ^ 2 warnings and 2 errors generated. make: *** [SSLeay.o] Error 1 -> FAIL Installing Net::SSL failed. See /Users/administrator/.cpanm/work/1721974215.35063/build.log for details. Retry with --force to force install it. 

cpanm (App::cpanminus) 1.9018 on perl 5.040000 built for darwin-2level Work directory is /Users/administrator/.cpanm/work/1721974660.39142 You have make /usr/bin/make You have LWP: 6.77 You have /usr/bin/tar: bsdtar 3.5.3 - libarchive 3.5.3 zlib/1.2.12 liblzma/5.4.3 bz2lib/1.0.8 You have /usr/bin/unzip Searching DBD::MariaDB () on cpanmetadb ... --> Working on DBD::MariaDB Fetching http://www.cpan.org/authors/id/P/PA/PALI/DBD-MariaDB-1.23.tar.gz -> OK Unpacking DBD-MariaDB-1.23.tar.gz Entering DBD-MariaDB-1.23 Checking configure dependencies from META.json Checking if you have utf8 0 ... Yes (1.25) Checking if you have DBI 1.608 ... Yes (1.643) Checking if you have strict 0 ... Yes (1.13) Checking if you have ExtUtils::MakeMaker 6.58 ... Yes (7.70) Checking if you have Data::Dumper 0 ... Yes (2.189) Checking if you have Getopt::Long 0 ... Yes (2.57) Checking if you have Devel::CheckLib 1.12 ... Yes (1.16) Checking if you have File::Spec 0 ... Yes (3.90) Checking if you have Config 0 ... Yes (5.040000) Checking if you have warnings 0 ... Yes (1.70) Configuring DBD-MariaDB-1.23 Running Makefile.PL Argument "pro" isn't numeric in numeric ge (>=) at /usr/local/lib/perl5/5.40.0/ExtUtils/MM_Unix.pm line 47. PLEASE NOTE: For 'make test' to run properly, you must ensure that the database user 'root' can connect to your MariaDB or MySQL server and has the proper privileges that these tests require such as 'drop table', 'create table', 'drop procedure', 'create procedure' as well as others. mysql> grant all privileges on test.* to 'root'@'localhost' identified by 's3kr1t'; For MySQL 8 it is needed to use different syntax: mysql> create user 'root'@'localhost' identified by 's3kr1t'; mysql> grant all privileges on test.* to 'root'@'localhost'; You can also optionally set the user to run 'make test' with: perl Makefile.PL --testuser=username I will use the following settings for compiling and testing: cflags (mysql_config) = -I/usr/local/Cellar/mariadb/11.4.2/include/mysql -I/usr/local/Cellar/mariadb/11.4.2/include/mysql/mysql libs (mysql_config) = -L/usr/local/Cellar/mariadb/11.4.2/lib/ -lmariadb mysql_config (guessed ) = mariadb_config testauthplugin (default ) = testdb (default ) = test testhost (default ) = testpassword (default ) = testport (default ) = testsocket (default ) = testuser (guessed ) = root To change these settings, see 'perl Makefile.PL --help' and 'perldoc DBD::MariaDB::INSTALL'. Checking if libs and header files are available for compiling... Checking if correct version of MariaDB or MySQL client is present... Looks good. Embedded server: not supported by client library WARNING: Older versions of ExtUtils::MakeMaker may errantly install README.pod as part of this distribution. It is recommended to avoid using this path in CPAN modules. Client library deinitialize OpenSSL library functions: yes Checking if your kit is complete... Looks good Using DBI 1.643 (for perl 5.040000 on darwin-2level) installed in /usr/local/lib/perl5/site_perl/5.40.0/darwin-2level/auto/DBI/ Generating a Unix-style Makefile Writing Makefile for DBD::MariaDB Writing MYMETA.yml and MYMETA.json -> OK Checking dependencies from MYMETA.json ... Checking if you have Test::More 0.90 ... Yes (1.302199) Checking if you have bigint 0 ... Yes (0.67) Checking if you have lib 0 ... Yes (0.65) Checking if you have DynaLoader 0 ... Yes (1.56) Checking if you have Data::Dumper 0 ... Yes (2.189) Checking if you have ExtUtils::MakeMaker 0 ... Yes (7.70) Checking if you have warnings 0 ... Yes (1.70) Checking if you have DBI::Const::GetInfoType 0 ... Yes (2.008697) Checking if you have Encode 0 ... Yes (3.21) Checking if you have vars 0 ... Yes (1.05) Checking if you have constant 0 ... Yes (1.33) Checking if you have Time::HiRes 0 ... Yes (1.9777) Checking if you have B 0 ... Yes (1.89) Checking if you have Test::Deep 0 ... Yes (1.204) Checking if you have FindBin 0 ... Yes (1.54) Checking if you have DBI 1.608 ... Yes (1.643) Checking if you have File::Temp 0 ... Yes (0.2311) Checking if you have strict 0 ... Yes (1.13) Checking if you have utf8 0 ... Yes (1.25) Building and testing DBD-MariaDB-1.23 cp lib/DBD/MariaDB.pm blib/lib/DBD/MariaDB.pm cp lib/DBD/MariaDB.pod blib/lib/DBD/MariaDB.pod cp lib/DBD/MariaDB/INSTALL.pod blib/lib/DBD/MariaDB/INSTALL.pod cp README.pod blib/lib/DBD/MariaDB/README.pod Running Mkbootstrap for MariaDB () chmod 644 "MariaDB.bs" "/usr/local/bin/perl" -MExtUtils::Command::MM -e 'cp_nonempty' -- MariaDB.bs blib/arch/auto/DBD/MariaDB/MariaDB.bs 644 "/usr/local/bin/perl" -p -e "s/~DRIVER~/MariaDB/g" /usr/local/lib/perl5/site_perl/5.40.0/darwin-2level/auto/DBI/Driver.xst > MariaDB.xsi "/usr/local/bin/perl" "/usr/local/lib/perl5/5.40.0/ExtUtils/xsubpp" -typemap '/usr/local/lib/perl5/5.40.0/ExtUtils/typemap' MariaDB.xs > MariaDB.xsc Warning: duplicate function definition 'do' detected in MariaDB.xs, line 104 Warning: duplicate function definition 'rows' detected in MariaDB.xs, line 231 Warning: duplicate function definition 'last_insert_id' detected in MariaDB.xs, line 250 mv MariaDB.xsc MariaDB.c cc -c -I/usr/local/lib/perl5/site_perl/5.40.0/darwin-2level/auto/DBI -I/usr/local/Cellar/mariadb/11.4.2/include/mysql -I/usr/local/Cellar/mariadb/11.4.2/include/mysql/mysql -DHAVE_DBI_1_634 -DHAVE_DBI_1_642 -DHAVE_PROBLEM_WITH_OPENSSL -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 -Wno-error=implicit-function-declaration -O3 -DVERSION=\"1.23\" -DXS_VERSION=\"1.23\" "-I/usr/local/lib/perl5/5.40.0/darwin-2level/CORE" MariaDB.c In file included from MariaDB.c:186: /usr/local/lib/perl5/site_perl/5.40.0/darwin-2level/auto/DBI/Driver_xst.h:33:5: warning: '(' and '{' tokens introducing statement expression appear in different macro expansion contexts [-Wcompound-token-split-by-macro] EXTEND(SP, params); ^~~~~~~~~~~~~~~~~~ /usr/local/lib/perl5/5.40.0/darwin-2level/CORE/pp.h:460:25: note: expanded from macro 'EXTEND' # define EXTEND(p,n) STMT_START { \ ^~~~~~~~~~ /usr/local/lib/perl5/site_perl/5.40.0/darwin-2level/auto/DBI/dbipport.h:4185:31: note: expanded from macro 'STMT_START' # define STMT_START (void)( /* gcc supports ``({ STATEMENTS; })'' */ ^ /usr/local/lib/perl5/site_perl/5.40.0/darwin-2level/auto/DBI/Driver_xst.h:33:5: note: '{' token is here EXTEND(SP, params); ^~~~~~~~~~~~~~~~~~ /usr/local/lib/perl5/5.40.0/darwin-2level/CORE/pp.h:460:36: note: expanded from macro 'EXTEND' # define EXTEND(p,n) STMT_START { \ ^ In file included from MariaDB.c:186: /usr/local/lib/perl5/site_perl/5.40.0/darwin-2level/auto/DBI/Driver_xst.h:33:5: warning: '}' and ')' tokens terminating statement expression appear in different macro expansion contexts [-Wcompound-token-split-by-macro] EXTEND(SP, params); ^~~~~~~~~~~~~~~~~~ /usr/local/lib/perl5/5.40.0/darwin-2level/CORE/pp.h:466:25: note: expanded from macro 'EXTEND' } STMT_END ^ /usr/local/lib/perl5/site_perl/5.40.0/darwin-2level/auto/DBI/Driver_xst.h:33:5: note: ')' token is here EXTEND(SP, params); ^~~~~~~~~~~~~~~~~~ /usr/local/lib/perl5/5.40.0/darwin-2level/CORE/pp.h:466:27: note: expanded from macro 'EXTEND' } STMT_END ^~~~~~~~ /usr/local/lib/perl5/site_perl/5.40.0/darwin-2level/auto/DBI/dbipport.h:4186:25: note: expanded from macro 'STMT_END' # define STMT_END ) ^ ^ ./MariaDB.xsi:214:39: warning: '(' and '{' tokens introducing statement expression appear in different macro expansion contexts [-Wcompound-token-split-by-macro] if (is_selectrow_array) { XSRETURN_EMPTY; } else { XSRETURN_UNDEF; } ^~~~~~~~~~~~~~ /usr/local/lib/perl5/5.40.0/darwin-2level/CORE/XSUB.h:340:27: note: expanded from macro 'XSRETURN_EMPTY' #define XSRETURN_EMPTY STMT_START { XSRETURN(0); } STMT_END ^~~~~~~~~~ /usr/local/lib/perl5/site_perl/5.40.0/darwin-2level/auto/DBI/dbipport.h:4185:31: note: expanded from macro 'STMT_START' # define STMT_START (void)( /* gcc supports ``({ STATEMENTS; })'' */ ^ ./MariaDB.xsi:214:39: note: '{' token is here if (is_selectrow_array) { XSRETURN_EMPTY; } else { XSRETURN_UNDEF; } ^~~~~~~~~~~~~~ /usr/local/lib/perl5/5.40.0/darwin-2level/CORE/XSUB.h:340:38: note: expanded from macro 'XSRETURN_EMPTY' #define XSRETURN_EMPTY STMT_START { XSRETURN(0); } STMT_END ^ ./MariaDB.xsi:214:39: warning: '(' and '{' tokens introducing statement expression appear in different macro expansion contexts [-Wcompound-token-split-by-macro] if (is_selectrow_array) { XSRETURN_EMPTY; } else { XSRETURN_UNDEF; } ^~~~~~~~~~~~~~ /usr/local/lib/perl5/5.40.0/darwin-2level/CORE/XSUB.h:340:57: note: expanded from macro 'XSRETURN_EMPTY' #define XSRETURN_EMPTY STMT_START { XSRETURN(0); } STMT_END ^~~~~~~~~~~ /usr/local/lib/perl5/5.40.0/darwin-2level/CORE/XSUB.h:325:5: note: expanded from macro 'XSRETURN' STMT_START { \ ^~~~~~~~~~ /usr/local/lib/perl5/site_perl/5.40.0/darwin-2level/auto/DBI/dbipport.h:4185:31: note: expanded from macro 'STMT_START' Failed 6/7 subtests Can't use an undefined value as a subroutine reference at /usr/local/lib/perl5/5.40.0/TAP/Harness.pm line 612. make: *** [test_dynamic] Error 255 

use v5.40 ; use IO::Async::Loop; use Net::Async::WebSocket::Client; my $client = Net::Async::WebSocket::Client->new( on_text_frame => sub( $self, $frame ) { print $frame ; }, ); my $loop = IO::Async::Loop->new; $loop->add( $client ); $client->connect( url => "wss://ntfy.sh/perl/ws" )->get ; $loop->run; 

Can one explain why perl is not as admired or desired as bash?

submitted by /u/ReplacementSlight413
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Perl Weekly Challenge 278: Sort String

https://blogs.perl.org/users/laurent_r/2024/07/perl-weekly-challenge-278-sort-string.html

TWC 277: Strength Uncombined

https://blogs.perl.org/users/bruce_gray/2024/07/twc-277-strength-uncombined.html

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

https://blogs.perl.org/users/karjala/2024/07/how-to-use-perl-v540s-boolean-builtins-in-mojopg-queries.html

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 ?

https://chrisarg.github.io/Killing-It-with-PERL/2024/07/09/The-Quest-For-Performance-Part-IV-May-the-SIMD-Force-Be-With-You.html

submitted by /u/ReplacementSlight413
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Using Coro and AnyEvent Interactively

https://blogs.perl.org/users/gg/2024/07/using-coro-and-anyevent-interactively.html

Perl Weekly Challenge 277: Strong Pair

https://blogs.perl.org/users/laurent_r/2024/07/perl-weekly-challenge-277-strong-pair.html

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

Perl Weekly Challenge 277: Count Common

https://blogs.perl.org/users/laurent_r/2024/07/perl-weekly-challenge-277-count-common.html

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 ^ 

submitted by /u/kosaromepr
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MongoDB-v2.2.2

Official MongoDB Driver for Perl (EOL)

^MetaCPAN

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.

https://chrisarg.github.io/Killing-It-with-PERL/2024/07/06/The-Quest-For-Performance-Part-I-InlineC-OpenMP-PDL.html

https://chrisarg.github.io/Killing-It-with-PERL/2024/07/07/The-Quest-For-Performance-Part-II-PerlVsPython.md.html

submitted by /u/ReplacementSlight413
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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

submitted by /u/Ill-Dependent2628
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Sailing the Seven YAPCs

https://blogs.perl.org/users/buddy_burden/2024/07/sailing-the-seven-yapcs.html

Anyone have any insight? https://www.perlmonks.org/r/perl/.rss

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Perl Weekly Challenge 276: Maximum Frequency

https://blogs.perl.org/users/laurent_r/2024/07/perl-weekly-challenge-276-maximum-frequency.html

I am fairly new to Perl. I did a lot with it in the mid 90s and came back about 8 months ago. There is a lot I dont know and probably a lot of things I have forgotten.

I picked up Perl to write a couple of applications that I was hoping could run on MacOS, Linux,OpenBSD, and Windows. Perl runs on all of them and many come with Perl built in. Simple scripts I have written run pretty well. (Lets forget about Windows for now).

When I start using libraries(packages?) there is a world of hurt.

Now some libraries pretty much usually work, but many do not. Which works and which do not seems to be dependent upon the operating system and distro.

Then I have to start with what version of Perl is running everywhere. That is annoying.

I end up spending a lot of time on a new machine when I want to run my application, doing nothing else than trying to get the libraries installed.

So I decided to adopt PerlBrew (havent tried it on OpenBSD yet) That should give me a stable version across the differnt platforms.

Then I decided I wanted to write a shell script that would handle installing all of the libarires I might use once and for all so I would know they were all accounted for.

perlbrew exec -q --with perl-5.40.0 cpanm install DBI

Then libraries I have pulled from CPAN do not work.

Google here and Google there.

Ok install GCC and make (I should have known this) More problems:

I found a few of these: "Why are you using CPAN for this? Use the compiled packages that come with <OS><type>"

Hmm I would have thought that CPAN shold be the best source? How do I know what exists as pre built packages on what platform?

Using apt search "perl" or "-perl" or "perl" does not help that much.

I have XML::LibXML working on Mac but getting it working on Ubuntu 22 I have been able to do. I have even tried to start OpenBSD yet)

Is writing cross platform applications in Perl meant to be this difficult?

Should I avoid libraries at all costs and write an aweful lot of code myself?

Is there an easy way to guess what libraries will almost certainly work and what libraries will most likely never work? Some kind of warning system?

Should I look into using pp? I havent yet figured out how to make it compile for Ubuntu,MacOs,OpenBSD yet.

In GoLang its a couple of flags to set for each architecture and off it goes.

ShouldI look into Par files? (or was it Far) that are supposesd to contain the nessescary libraries within itself?

What am I doing wrong?

Libraries in my current set Given all the experimenting some of them are now wrong.

Array::Set, Array::Unique, Bundle::LWP, Data::Dump, Data::Dumper, DateTime, DBD::SQLite, DBI, Digest::file, Digest::MD5, Digest::MD5::File, File::Basename, File::Compare, File::Copy, File::Find, File::Find::Rule, File::Glob, File::Path, File::Slurp, File::Spec, Image::ExifTool, Image::Info, IO::All, List::Compare, List::Gen, List::MoreUtils, List::SomeUtils, List::Util, List::UtilsBy, Log::Minimal, LWP, LWP::Simple, Path::Tiny, Term::ANSIColor, Text::Fuzzy, Type::Tiny,Moose,MooseX::Types,WWW::Mechanize

submitted by /u/NoeticIntelligence
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Repository of examples using Perl and Assembly together

https://blogs.perl.org/users/chrisarg/2024/07/repository-of-examples-using-perl-and-assembly-together.html

Today I learned... #1: variable scoping in if-else blocks

https://blogs.perl.org/users/karjala/2024/07/today-i-learned-1-variable-scoping-in-if-else-blocks.html

Caching & Memoization with state variables

https://blogs.perl.org/users/chrisarg/2024/07/caching-memoization-with-state-variables.html

You may have noticed the slow pace of Corinna development. As it turns out, there's an easy way to speed up the development: tell Paul.

I had a call with Paul "LeoNerd" Evans last night and this, including his email address, is being shared with his permission.

As you might imagine, being a core Perl developer, Paul has many things on his plate. Currently has has tons of PRs against the Perl core, he's doing new work such as experimenting with data checks (don't call them "types"!), and is active on the Perl steering council and in P5P. However, he's previously mentioned that he doesn't get much feedback on his work. For adding something as important as Corinna, just blindly adding it without hearing from the community is bad. Yes, we had a multi-year design phase and Corinna is much better for it, but that doesn't mean it's perfect and we don't want to screw this up.

So here's where you come in. Email Paul at leonerd at leonerd.org.uk. Tell him your thoughts about Corinna. He's he one implementing it and working in isolation as he is, despite his work with Object::Pad, isn't good. Tell him what you like, what you don't like, what you'd like to see next, what bugs you've encountered, and so on. Without hearing from you, he has no way of judging community thoughts/support for this project, so he needs your help.

If you'd like a quick refresher on the new syntax, I've written a short introduction. Here's a dead-simple LRU cache written in the new syntax:

use feature 'class'; class Cache::LRU { use Hash::Ordered; field $cache = Hash::Ordered->new; field $max_size :param :reader = 20; method set( $key, $value ) { $cache->unshift( $key, $value ); # new values in front if ( $cache->keys > $max_size ) { $cache->pop; } } method get($key) { return unless $cache->exists($key); my $value = $cache->get($key); $cache->unshift( $key, $value ); # put it at the front return $value; } } 

Pull requests · Perl/perl5

🐪 The Perl programming language. Contribute to Perl/perl5 development by creating an account on GitHub.

^GitHub

Squeezing more data from Linux

https://blogs.perl.org/users/alceu_rodrigues_de_freitas_junior/2024/07/squeezing-more-data-from-linux.html

Perl Weekly Challenge 276: Complete Day

https://blogs.perl.org/users/laurent_r/2024/07/perl-weekly-challenge-276-complete-day.html

Blogpost about setting the #openmpl environment from within #perl

https://chrisarg.github.io/Killing-It-with-PERL/2024/07/01/Rudimentary-control-of-OpenMP-from-Perl.html

Other links:

1. Brett Estrade's presentation at TPRC

https://www.youtube.com/watch?v=_pzG5DerDT0

1. my companion entry at blogs.perl for https://blogs.perl.org/users/chrisarg/2024/07/parallel-perlc-applications-without-tears-using-openmp-controlling-the-openmp-environment.html

perl #openmp #parallelprogramming

submitted by /u/ReplacementSlight413
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Intermediate OpenMP for Perl Programmers - Brett Estrade - TPRC 2024

#tprc2024 #perl #raku #openmp This is a sequel to my 2021 talk in Houston, “Introduction to OpenMP for Perl Programmers”. That talk covered the essential ele...

^YouTube

Parallel Perl/C applications without tears using OpenMP: Controlling the OpenMP environment

https://blogs.perl.org/users/chrisarg/2024/07/parallel-perlc-applications-without-tears-using-openmp-controlling-the-openmp-environment.html

My job has led me down the rabbit hole of doing some scripting work in Perl, mainly utility tools. The challenge being that these tools need to parse several thousand source files, and doing so would take quite some time.

I initially dabbled in doing very light stuff with a perl -e one-liner from within a shell script, which meant I could use xargs. However, as my parsing needs evolved on the Perl side of things, I ended up switching to an actual Perl file, which hindered my ability to do parallel processing as our VMs did not have the Perl interpreter built with threads support. In addition, installation of any non-builtin modules such as CPAN was not possible on my target system, so I had limited possibilities, some of which I would assume to be safer and/or less quirky than this.

So then I came up with a rather ugly solution which involved invoking xargs via backticks, which then called a perl one-liner (again) for doing the more computation-heavy parts, xargs splitting the array to process into argument batches for each mini-program to process. It looked like this thus far:

my $out = `echo "$str_in" | xargs -P $num_threads -n $chunk_size perl -e ' my \@args = \@ARGV; foreach my \$arg (\@args) { for my \$idx (1 .. 100000) { my \$var = \$idx; } print "\$arg\n"; } '`; 

• No editor syntax highlighting (in my case, VSCode), since the inline program is a string.
• All variables within the inline program had to be escaped so as not to be interpolated themselves, which hindered readability quite a bit.
• Every time you would want to use this technique in different parts of the code, you'd have to copy-paste the entire shell command together with the mini-program, even if that very logic was somewhere else in your code.

After some playing around, I've come to a nifty almost-metaprogramming solution, which isn't perfect still, but fits my needs decently well:

sub processing_fct { my u/args = u/ARGV; foreach my $arg (@args) { for my $idx (1 .. 100000) { my $var = $idx; } print "A very extraordinarily long string that contains $arg words and beyond\n"; } } sub parallel_invoke { use POSIX qw{ceil}; my $src_file = $0; my $fct_name = shift; my $input_arg_array = shift; my $n_threads = shift; my $str_in = join("\n", @{$input_arg_array}); my $chunk_size = ceil(@{$input_arg_array} / $n_threads); open(my $src_fh, "<", $src_file) or die("parallel_invoke(): Unable to open source file"); my $src_content = do { local $/; <$src_fh> }; my $fct_body = ($src_content =~ /sub\s+$fct_name\s*({((?:[^}{]*(?1)?)*+)})/m)[1] or die("Unable to find function $fct_name in source file"); return `echo '$str_in' | xargs -P $n_threads -n $chunk_size perl -e '$fct_body'`; } my $out = parallel_invoke("processing_fct", \@array, $num_threads); 

My limited benchmarking has found this to be as fast if not faster than the perl-with-threads equivalent, in addition to circumventing the performance penalty for the thread safety.

I'd be curious to hear of your opinion of such method, or if you've solved a similar issue differently.

submitted by /u/Wynaan
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