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prove this situation the first such tool was apache s mod_perl which sought to address one of the most common reasons that small perl programs were invoked rapidly cgi web development activeperl via microsoft isapi provides similar performance improvements 124 once perl code is compiled there is additional overhead during the execution phase that typically isn t present for programs written in compiled languages such as c or c examples of such overhead include bytecode interpretation reference counting memory management and dynamic type checking 125 the most critical routines can be written in other languages such as c which can be connected to perl via simple inline modules or the more complex but flexible xs mechanism 126 applications edit perl has many and varied applications compounded by the availability of many standard and third party modules perl has chiefly been used to write cgi scripts large projects written in perl include cpanel slash bugzilla rt twiki and movable type high traffic websites that use perl extensively include priceline com craigslist 127 imdb 128 livejournal duckduckgo 129 130 slashdot and ticketmaster it is also an optional component of the popular lamp technology stack for web development in lieu of php or python perl is used extensively as a system programming language in the debian linux distribution 131 perl is often used as a glue language tying together systems and interfaces that were not specifically designed to interoperate and for data munging 132 that is converting or processing large amounts of data for tasks such as creating reports these strengths are linked intimately the combination makes perl a popular all purpose language for system administrators particularly because short programs often called one liner programs can be entered and run on a single command line citation needed perl code can be made portable across windows and unix such code is often used by suppliers of software both commercial off the shelf cots and bespoke to simplify packaging and maintenance of software build and deployment scripts 133 perl tk and wxperl are commonly used to add graphical user interfaces to perl scripts perl s text handling capabilities can be used for generating sql queries arrays hashes and automatic memory management make it easy to collect and process the returned data for example in tim bunce s perl dbi application programming interface api the arguments to the api can be the text of sql queries thus it is possible to program in multiple languages at the same time e g for generating a web page using html javascript and sql in a here document the use of perl variable interpolation to programmatically customize each of the sql queries and the specification of perl arrays or hashes as the structures to programmatically hold the resulting data sets from each sql query allows a high level mechanism for handling large amounts of data for post processing by a perl subprogram 134 in early versions of perl database interfaces were created by relinking the interpreter with a client side database library this was sufficiently difficult that it was done for only a few of the most important and most widely used databases and it restricted the resulting perl executable to using just one database interface at a time 135 in perl 5 database interfaces are implemented by perl dbi modules the dbi database interface module presents a single database independent interface to perl applications while the dbd database driver modules handle the details of accessing some 50 different databases there are dbd drivers for most ansi sql databases 136 dbi provides caching for database handles and queries which can greatly improve performance in long lived execution environments such as mod_perl 137 helping high volume systems avert load spikes as in the slashdot effect 138 in modern perl applications especially those written using web frameworks such as catalyst the dbi module is often used indirectly via object relational mappers such as dbix class class dbi 139 or rose db object 140 that generate sql queries and handle data transparently to the application author 141 community edit perl s culture and community has developed alongside the language itself usenet was the first public venue in which perl was introduced but over the course of its evolution perl s community was shaped by the growth of broadening internet based services including the introduction of the world wide web the community that surrounds perl was in fact the topic of wall s first state of the onion talk 142 state of the onion is the name for wall s yearly keynote style summaries on the progress of perl and its community they are characterized by his hallmark humor employing references to perl s culture the wider hacker culture wall s linguistic background sometimes his family life and occasionally even his christian background 143 each talk is first given at various perl conferences and is eventually also published online in email usenet and message board postings just another perl hacker japh programs are a common trend originated by randal l schwartz one of the earliest professional perl trainers 144 in the parlance of perl culture perl programmers are known as perl hackers and from this derives the practice of writing short programs to print out the phrase just another perl hacker sic in the spirit of the original concept these programs are moderately obfuscated and short enough to fit into the signature of an email or usenet message the canonical japh as developed by schwartz includes the comma at the end although this is often omitted 145 perl golf is the pastime of reducing the number of characters key strokes used in a perl program to the bare minimum much in the same way that golf players seek to take as few shots as possible in a round the phrase s first use 146 emphasized the difference between pedestrian code meant to teach a newcomer and terse hacks likely to amuse experienced perl programmers an example of the latter being japhs that were already used in signatures in usenet postings and elsewhere similar stunts had been an unnamed pastime in the language apl in previous decades the use of perl to write a program that performed rsa encryption prompted a widespread and practical interest in this pastime 147 in subsequent years the term code golf has been applied to the pastime in other languages 148 a perl golf apocalypse was held at perl conference 4 0 in monterey california in july 2000 as with c obfuscated code competitions were a well known pastime in the late 1990s the obfuscated perl contest was a competition held by the perl journal from 1996 to 2000 that made an arch virtue of perl s syntactic flexibility awards were given for categories such as most powerful programs that made efficient use of space and best four line signature for programs that fit into four lines of 76 characters in the style of a usenet signature block 149 perl poetry is the practice of writing poems that can be compiled as legal perl code for example the piece known as black perl perl poetry is made possible by the large number of english words that are used in the perl language new poems are regularly submitted to the community at perlmonks 150 yet another perl conference edit yet another perl conference 151 754 152 14 also called yapc from 2016 2019 called the perl conference tpc from 2020 on the perl and raku conference is a series of conferences discussing the perl programming language that has run since 1999 it is usually organized under the auspices of the perl foundation and yet another society a non profit corporation for the advancement of collaborative efforts in computer and information sciences history edit the first yapc was held at carnegie mellon university in pittsburgh pennsylvania us on june 24 and june 25 1999 151 organized by kevin lenzo 153 yapc s origins were in the not for profit perl mongers user group 154 155 the first conference assembled 31 different speakers into the schedule on various perl related topics the idea of a low cost perl conference quickly spread the first european version of yapc was organized by members of the perl mongers in london in 2000 153 israel in 2003 155 australia in 2004 asia and brazil in 2005 and russia in 2008 the only continents never to have hosted a yapc are africa and antarctica in 2016 yapc rebranded itself as the perl conference 156 757 which is the former name of o reilly open source convention oscon as of 2020 it is now calling itself the perl and raku conference to reflect the renaming of perl 6 to raku reception edit by 2002 the perl developer s dictionary listed yapc as the second most important conference in the perl scene after o reilly s open source conference 11 minimal perl describes yapc as a collection of low priced grassroots events held around the world for the benefit of those who either can t afford the expense of the more elaborately staged conferences or just prefer the company of students and geeks to corporate it types 157 the conference is recommended in various other books about perl programming from the 2000s 158 the dutch linux magazine reviewed the second european yapc conference held in amsterdam in 2001 and describes the consternation when organisers revealed they had been listening in on network traffic and had found that several participants used unencrypted passwords despite the conference theme being security 159 other topics that year included building user interfaces using perl for speech and parallel programming and the conference had three parallel sessions with around 250 participants the name is an homage to yacc yet another compiler compiler locations edit north america edit 1999 pittsburgh pennsylvania usa june 24 25 1999 yapc na 1999 2000 pittsburgh pennsylvania usa june 21 23 2000 yapc na 19100 2001 montréal québec canada june 13 15 2001 yapc na 2001 archived 2016 03 09 at the wayback machine 2002 saint louis missouri usa june 26 28 2002 yapc na 2002 archived 2016 03 03 at the wayback machine 2003 canada ottawa ontario canada may 15 16 2003 held as yapc canada yapc canada 2003 america boca raton florida usa june 16 18 2003 yapc na 2003 archived 2016 03 03 at the wayback machine 2004 buffalo new york usa june 16 18 2004 yapc na 2004 archived 2015 08 09 at the wayback machine 2005 toronto ontario canada june 27 29 2005 yapc na 2005 archived 2015 08 09 at the wayback machine 2006 chicago illinois usa june 26 30 2006 2006 yapc na 2006 2007 houston texas usa june 25 27 2007 yapc na 2007 2008 chicago illinois usa june 16 18 2008 yapc na 2008 2009 pittsburgh pennsylvania usa june 22 24 2009 yapc na 2009 2010 columbus ohio usa june 21 23 2010 yapc na 2010 2011 asheville north carolina usa june 27 30 2011 yapc na 2011 2012 madison wisconsin usa june 13 15 2012 yapc na 2012 archived september 5 2015 at the wayback machine 2013 austin texas usa june 3 5 2013 yapc na 2013 2014 orlando florida usa june 23 25 2014 yapc na 2014 2015 salt lake city utah usa june 8 10 2015 yapc na 2015 2016 orlando florida usa june 20 22 2016 yapc na 2016 2017 alexandria virginia usa june 18 23 2017 the perl conference in dc 2018 salt lake city utah usa june 17 22 2018 the perl conference in salt lake city 2019 pittsburgh pennsylvania usa june 16 21 2019 the perl conference in pittsburgh 2020 online due to covid 19 wednesday 24th to friday 26th 2020 perl and raku conference in the cloud replaces tpcih 2020 houston archived 2020 01 29 at the wayback machine tuesday planned june 23 through saturday june 27th 2021 conference in the cloud june 8 10 2021 the perl and raku conference in the cloud 2022 houston tx june 22 24 2022 tpcih 2022 houston 2023 toronto ca july 11 13 2023 the perl and raku conference in toronto archived january 6 2024 at the wayback machine 2024 las vegas nv june 24 28 2024 tprc las vegas nv archived december 14 2025 at the wayback machine 2025 greenville sc june 27 29 2025 tprc greenville sc europe edit 2000 london england september 22 24 2000 yapc eu 2000 2001 amsterdam netherlands august 2 4 2001 yapc eu 2001 159 2002 munich germany september 18 20 2002 yapc eu 2002 2003 paris france july 23 25 2003 yapc eu 2003 2004 belfast northern ireland september 15 17 2004 yapc eu 2004 2005 braga portugal august 31 september 2 2005 yapc eu 2005 perl everywhere 2006 birmingham england august 30 september 1 2006 yapc eu 2006 2007 vienna austria august 28 30 2007 yapc eu 2007 social perl 2008 copenhagen denmark august 13 15 2008 yapc eu 2008 beautiful perl 2009 lisbon portugal august 3 5 2009 yapc eu 2009 corporate perl 2010 pisa italy august 4 6 2010 yapc eu 2010 the renaissance of perl 2011 riga latvia august 15 17 2011 yapc eu 2011 modern perl archived 2011 07 31 at the wayback machine 2012 frankfurt germany august 20 22 2012 yapc eu 2012 160 2013 kyiv ukraine august 12 14 2013 yapc eu 2013 future perl 2014 sofia bulgaria august 22 24 2014 yapc eu 2014 2015 granada spain september 2 4 2015 yapc eu 2015 art engineering 2016 cluj napoca romania august 24 26 2016 yapc europe 2016 2017 amsterdam the netherlands august 9 11 2017 the perl conference in amsterdam 2018 glasgow august 13 17 2018 the perl conference in glasgow 2019 riga august 7 9 2019 perlcon 2020 amsterdam august 10 14 2020 perl raku con in amsterdam archived december 5 2025 at the wayback machine cancelled due to the coronavirus pandemic 2023 helsinki august 14 18 2023 perl koha conference in helsinki israel edit 2003 haifa may 11 2003 yapc israel 2003 2004 herzliya february 26 2004 yapc israel 2004 2005 herzliya february 17 2005 yapc israel 2005 2006 netanya in 2006 yapc israel became osdc israel osdc israel 2006 russia ukraine edit 2008 moscow russia may 17 18 2008 yapc russia 2008 may perl archived 2015 09 25 at the wayback machine 2009 moscow russia may 16 17 2009 yapc russia 2009 may perl 2 2010 kyiv ukraine june 12 14 2010 yapc russia 2010 may perl perl mova archived 2010 10 22 at the wayback machine 2011 moscow russia may 14 15 2011 yapc russia 2011 may perl perl mova 2012 kyiv ukraine may 12 13 2012 yapc russia may perl no event held in 2013 due to yapc europe 2013 taking place in kyiv 2014 st petersburg russia june 13 14 2014 yapc russia 2014 2015 moscow russia may 16 17 2015 yapc russia 2015 2017 moscow russia november 4 2016 yapc russia 2017 australia edit the first yapc australia was held as part of the 2004 osdc in melbourne from december 1 december 5 2004 and has been held jointly thereafter south america edit these events are held in conjunction with conisli 2006 porto alegre rs april 19 22 2006 yapc sa 2006 2007 porto alegre rs april 11 14 2007 yapc sa 2007 2008 porto alegre rs april 17 19 2008 yapc sa 2008 2009 porto alegre rs june 24 27 2009 yapc sa 2009 brazil edit 2005 porto alegre rs june 1 5 2005 yapc brasil 2005 2006 são paulo sp brazil november 3 5 2006 yapc brasil 2006 archived 2006 11 16 at the wayback machine 2007 são paulo sp brazil november 9 11 2007 yapc brasil 2007 2008 são ...
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