Re: Can a perl programmer find jobs today?

[Hao Wu]

https://jobs.perl.org/

If you are in the right place, it is not that hard to find a perl job.



On Fri, Feb 17, 2023 at 7:46 PM winnie hw  wrote:

> I know perl/ruby/python and use all of them for work.
> But I didn't see an employer seeking the perl programmer.
> Can we the perl programmers find any professional jobs today?
>
> Thanks.
>

Re: function alias

[Hao Wu]

https://stackoverflow.com/questions/4512094/aliasing-a-function-in-perl

On Wed, Sep 4, 2019 at 2:17 PM Wesley Peng via beginners 
wrote:

> Hello,
>
> How to make a function alias in perl? for example, says() is alias to
> print().
>
> thanks.
>
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> http://learn.perl.org/
>
>
>

Re: What are the environmental variables used by Perl?

[Hao Wu]

https://perldoc.perl.org/Env.html

On Thu, May 30, 2019 at 8:58 PM Jeffrey Walton  wrote:

> Hi Everyone,
>
> I need to fix a self test for a C library written in Perl. I don't
> know Perl so it is a struggle. I am happy to refer to the manual, and
> it is located at https://linux.die.net/man/1/perl (and others). It is
> not clear to me which section of the manual covers environmental
> variables used by Perl.
>
> I found this online, but it does not appear that Perl actually honors
> PATH: https://docs.perl6.org/programs/03-environment-variables . (I
> also found a lot of noise; like how to set and read an envar from
> Perl).
>
> Which section of the manual can I find a list of environmental
> variables used by Perl? Is there even a section that covers it?
>
> Or, what are the environmental variables used by Perl?
>
> Thanks in advance.
>
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> http://learn.perl.org/
>
>
>

Re: perlbrew and cron

[Hao Wu]

0 23  * * * /path/to/perlbrew exec --with perl-5.20.0 perl /path/to/app.pl


On Thu, Dec 7, 2017 at 10:38 AM, SSC_perl  wrote:

> After moving to a VPS, I'm finally able to use perlbrew to use the
> latest perl, but it's not working the same as it does on my Mac.
>
> In terminal, I can call a perl script with either the full path to
> perl or with an alias I've set up in .bashrc.  So far, so good.  However,
> to run a script with cron, I can't seem to get it to run with the perlbrew
> version.  I've even tried it with just the path to the script, as mentioned
> by ikegami here:
>
> https://stackoverflow.com/questions/47457834/running-a-
> perl-script-from-crontab-when-you-use-perlbrew
>
> Unfortunately, I don't have anymore to go on than this as,
> literally, nothing happens - the script doesn't get run and I don't get an
> error email from cron, so I don't know where to look.
>
> Thanks,
> Frank
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>
>
>

Re: Question about Beginning Perl by Simon Cozens

[Hao Wu]

https://www.amazon.com/Beginning-Perl-Curtis-Poe/dp/1118013840

This one is more relevant. I read it and it is very good.

However, If you never programming before Learning Perl probably is better
to start with.



On Thu, Sep 1, 2016 at 9:52 AM, Walker, Michael E <
michael.e.walk...@boeing.com> wrote:

> Hi, even though *Beginning Perl* dates back to 2000, is it still relevant
> for learning today? I wondered, because when Googling, I saw posts
> recommending against its use, but yet it is still listed at books.perl.org.
> Please discuss, or point me to the archive on this list where this has been
> discussed. Thank you.
>

overload during match

[Hao Wu]

I use a variable which have a method overload to string in regex replace.

the result is string only if match success. I thought it should be always
string.

Could anyone explain how this happen? Thanks.

Below is the code

use Text::Xslate::Type::Raw; # a wraper of string, provide as_string, which
is overloaded to string, return the string.

use DDP;


sub strip_x { return $_[0]=~s/x//gr }


my $raw_a = Text::Xslate::Type::Raw-new(a);

p $raw_a;

my $striped_a = strip_x($raw_a);

p $striped_a;


my $raw_b = Text::Xslate::Type::Raw-new(x);

p $raw_b;

$striped_b = strip_x($raw_b);

p $striped_b;


__END__


Text::Xslate::Type::Raw  {

  public methods (3) : (), as_string, new

private methods (0)

  internals: a

}

Text::Xslate::Type::Raw  {

public methods (3) : (), as_string, new

  private methods (0)

internals: a

}

Text::Xslate::Type::Raw  {

public methods (3) : (), as_string, new

  private methods (0)

internals: x

}

Re: Looking for introductory to advanced examples of RESTful programming in Perl

[Hao Wu]

what you looking for is not a rest server, but rest client.

For JIRA,

https://metacpan.org/pod/JIRA::REST

I did not check the source, but it is should be a wrapper around some http
client.

you can follow Shlomi Fish's link to learn more about web automation as a
start and then check the JIRA::REST source.




On Tue, Aug 11, 2015 at 8:46 PM, Kenneth Wolcott kennethwolc...@gmail.com
wrote:

 Hello again;

  take a look at
 
  http://www.todobackend.com/
 
  you can port the mojolicious one to Dancer as a learning experience.

 Thank you for the tips...

  You'd have to try any of the web framework for creating RESTful API
  You can try Mojolicious
  http://mojolicio.us/perldoc

  Or you can try dancer2.
  https://metacpan.org/pod/Dancer2::Cookbook#Writing-a-REST-application
  https://metacpan.org/pod/Dancer2::Tutorial

 Again, thanks for the tips...

 Perhaps I didn't phrase my question very well.

 If I have an API for JIRA or an API for some other application that is
 provided in a RESTful manner, do I use Dancer or Mojolicious?

 What would I do if the API I needed to interface with in Perl was JSON?

 A long time ago I wrote a portion of a Perl-based web app that
 interfaced with an XML-based API, but I've never done JSON or RESTful
 with Perl.

 Thanks,
 Ken

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Re: Looking for introductory to advanced examples of RESTful programming in Perl

[Hao Wu]

take a look at

http://www.todobackend.com/

you can port the mojolicious one to Dancer as a learning experience.



On Tue, Aug 11, 2015 at 6:50 PM, Kenneth Wolcott kennethwolc...@gmail.com
wrote:

 Hello;

   I'm looking for introductory to advanced examples of RESTful
 programming in Perl preferably with some good explanations and best
 practices.

 Thanks,
 Ken Wolcott

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Re: Good books to study perl interpreter

[Hao Wu]

Hi, rakesh,

search 'perl internal', will give you most of the result.

*Extending and Embedding Perl* is the book you are looking for.

On Mon, Mar 30, 2015 at 9:42 AM, rakesh sharma rakeshsharm...@hotmail.com
wrote:

 Hi all

 Please suggest nice books to know perl interpreter. In depth books is that
 i am looking for.

 Thanks
 Rakesh

Re: Can't Install Mojolicious on Shared Server

[Hao Wu]

use DigitalOcean about $5 a month. you get everything you need.

I am running Dancer2 in DigitalOcean, runs great.


On Tue, Jul 29, 2014 at 4:25 PM, Mike Flannigan mikef...@att.net wrote:


 I pay about $8 per month for a shared server hosting
 at Hostgator.  I recently asked Hostgator to install
 Mojolicious on my account because I wanted to migrate
 away from CGI.

 Hostgator tells me they can't install Mojolicious on a
 shared server as to install any custom modules you will need
 root access to the server especially for one such as
 Mojolicious which is a Full stack HTTP and WebSocket client/server
 implementation with IPv6, TLS, SNI, IDNA, Comet (long polling),
 keep-alive, connection pooling, timeout, cookie, multipart, proxy and
 gzip compression support.  Unfortunately we will not install any
 modules that opens sockets and acts as a server.

 They also can't install Fastcgi on shared servers due to memory issues.

 They did install CGI::Simple.

 It appears dedicated servers are $200 per month, or slightly more.
 http://www.hostgator.com/dedicated
 I'm not likely to do that.


 Does anybody here have any suggestions on what I can do other than
 go back to CGI?  I asked about Catalyst and I'll see what they say
 to that.  Are there any shared hosting plans that allow the installation
 of Mojolicious?


 Mike



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Re: Grabbing HTML fields, return them as hash

[Hao Wu]

http://mojolicio.us/perldoc/Mojo/DOM

not exactly what you want, but  it is good to use.


On Mon, Jun 9, 2014 at 12:25 PM, Mike ekimduna...@gmail.com wrote:

 Hello everyone. Can anyone point me in the direction of a module that will
 allow me to grab HTML fields and return them as a hash?

 Thanks.

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Re: Brackets in scalar and array

[Hao Wu]

Hi,
you can find the answer here,

http://perlmaven.com/scalar-and-list-context-in-perl

Good Luck to your exam!


On Thu, May 29, 2014 at 1:20 PM, James Kerwin jkerwin2...@gmail.com wrote:

 Hello all, long time lurker, first time requester...

 I have a Perl exam tomorrow and came across a question that I just cannot
 find an answer to (past paper, this isn't cheating or homework etc.).

 Explain the difference between:

 ($test)=(@test);

 And

 $test=@test;

 If anybody could shed any light on this I'd be very grateful.

 Thanks,
 James.

Re: don't understand for a package

[Hao Wu]

I think Starman.pm is for document and version only.

follow the code here.

https://metacpan.org/source/MIYAGAWA/Starman-0.4009/script/starman#L18

https://metacpan.org/source/MIYAGAWA/Plack-1.0030/lib/Plack/Runner.pm

https://metacpan.org/source/MIYAGAWA/Plack-1.0030/lib/Plack/Loader.pm#L41

  $server_class = Plack::Util::load_class($server, 'Plack::Handler');

$server is Starman, so the server_calss is Plack::Handler::Starman

https://metacpan.org/source/MIYAGAWA/Starman-0.4009/lib/Plack/Handler/Starman.pm

The code will not cheat, so be patient.



On Wed, May 21, 2014 at 7:51 PM, Yonghua Peng sys...@mail2000.us wrote:

 Hello members,

 I run this command to install Starman webserver working along with Dancer.

 $ sudo cpanm Starman

 This run successfully.
 Then I take a look at the source of Starman, found it has only 6 lines
 code:

 package Starman;

 use strict;
 use 5.008_001;
 our $VERSION = '0.4009';

 1;
 __END__

 (see http://cpansearch.perl.org/src/MIYAGAWA/Starman-0.4009/lib/Starman.pm
 )

 How a Starman webserver can run with this nothing actual code?

 Thanks.