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<span id="openzim-page-title" class="mw-page-title-main"><span class="mw-page-title-main">Pike (programming language)</span></span>
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</style><table class="infobox vevent"><tbody><tr><th colspan="2" class="infobox-above" style="background-color:#e0e0e0;">Pike</th></tr><tr><td colspan="2" class="infobox-image"><span typeof="mw:File"></span></td></tr><tr><th scope="row" class="infobox-label"><a href="Programming_paradigm" title="Programming paradigm">Paradigm</a></th><td class="infobox-data"><a href="Multi-paradigm_programming_language" class="mw-redirect" title="Multi-paradigm programming language">Multi-paradigm</a>: <a href="Object-oriented_programming" title="Object-oriented programming">object-oriented</a>, <a href="Functional_programming" title="Functional programming">functional</a>, <a href="Procedural_programming" title="Procedural programming">procedural</a></td></tr><tr><th scope="row" class="infobox-label"><a href="Software_design" title="Software design">Designed by</a></th><td class="infobox-data">Fredrik Hübinette</td></tr><tr><th scope="row" class="infobox-label"><a href="Software_developer" class="mw-redirect" title="Software developer">Developer</a></th><td class="infobox-data organiser">Pike development team supported by the Software and Systems division of the Department of Computer and Information Science (IDA) at Linköping University</td></tr><tr><th scope="row" class="infobox-label">First appeared</th><td class="infobox-data">1994<span style="display:none"> (<span class="bday dtstart published updated">1994</span>)</span></td></tr><tr><td colspan="2" class="infobox-full-data"></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Software_release_life_cycle" title="Software release life cycle">Stable release</a></th><td class="infobox-data"><div style="margin:0px;">8.0.1738
/ January 30, 2022<span style="display:none"> (<span class="bday dtstart published updated">2022-01-30</span>)</span></div></td></tr><tr style="display:none"><td colspan="2">
</td></tr><tr><th scope="row" class="infobox-label"><a href="Type_system" title="Type system">Typing discipline</a></th><td class="infobox-data"><a href="Static_typing" class="mw-redirect" title="Static typing">Static</a>, <a href="Dynamic_typing" class="mw-redirect" title="Dynamic typing">dynamic</a>, <a href="Manifest_typing" title="Manifest typing">manifest</a></td></tr><tr><th scope="row" class="infobox-label"><a href="Operating_system" title="Operating system">OS</a></th><td class="infobox-data">Any <a href="Unix-like" title="Unix-like">Unix-like</a>, <a href="Microsoft_Windows" title="Microsoft Windows">Windows</a></td></tr><tr><th scope="row" class="infobox-label"><a href="Software_license" title="Software license">License</a></th><td class="infobox-data"><a href="GNU_General_Public_License" title="GNU General Public License">GPL</a>/<a href="GNU_Lesser_General_Public_License" title="GNU Lesser General Public License">LGPL</a>/<a href="Mozilla_Public_License" title="Mozilla Public License">MPL</a></td></tr><tr><th scope="row" class="infobox-label">Website</th><td class="infobox-data"><span class="url"><a rel="nofollow" class="external text" href="https://pike.lysator.liu.se/">pike<wbr>.lysator<wbr>.liu<wbr>.se</a></span></td></tr><tr><th colspan="2" class="infobox-header" style="background-color: #EEEEEE;">Major <a href="Programming_language_implementation" title="Programming language implementation">implementations</a></th></tr><tr><td colspan="2" class="infobox-full-data">Pike</td></tr><tr><th colspan="2" class="infobox-header" style="background-color: #EEEEEE;">Influenced by</th></tr><tr><td colspan="2" class="infobox-full-data"><a href="LPC_(programming_language)" class="mw-redirect" title="LPC (programming language)">LPC</a>, <a href="C_(programming_language)" title="C (programming language)">C</a>, <a href="C%2B%2B" title="C++">C++</a></td></tr></tbody></table>
<p><b>Pike</b> is an <a href="Interpreter_(computing)" title="Interpreter (computing)">interpreted</a>, <a href="General-purpose_programming_language" title="General-purpose programming language">general-purpose</a>, <a href="High_level_programming_language" class="mw-redirect" title="High level programming language">high-level</a>, <a href="Cross-platform" class="mw-redirect" title="Cross-platform">cross-platform</a>, <a href="Dynamic_programming_language" title="Dynamic programming language">dynamic programming language</a>, with a syntax similar to that of <a href="C_(programming_language)" title="C (programming language)">C</a>. Unlike many other dynamic languages, Pike is both statically and dynamically typed, and requires explicit type definitions. It features a flexible type system that allows the rapid development and flexible code of dynamically typed languages, while still providing some of the benefits of a statically-typed language.
</p><p>Pike features <a href="Garbage_collection_(computer_science)" title="Garbage collection (computer science)">garbage collection</a>, advanced data types, and <a href="First-class_function" title="First-class function">first-class</a> <a href="Anonymous_function" title="Anonymous function">anonymous functions</a>, with support for many <a href="Programming_paradigm" title="Programming paradigm">programming paradigms</a>, including <a href="Object-oriented_programming" title="Object-oriented programming">object-oriented</a>, <a href="Functional_programming" title="Functional programming">functional</a> and <a href="Imperative_programming" title="Imperative programming">imperative programming</a>. Pike is <a href="Free_software" title="Free software">free software</a>, released under the <a href="GNU_General_Public_License" title="GNU General Public License">GPL</a>, <a href="LGPL" class="mw-redirect" title="LGPL">LGPL</a> and <a href="Mozilla_Public_License" title="Mozilla Public License">MPL</a> licenses.
</p>
<meta property="mw:PageProp/toc">
<div class="mw-heading mw-heading2"><h2 id="History">History</h2></div>
<p>Pike has its roots in <a href="LPC_(programming_language)" class="mw-redirect" title="LPC (programming language)">LPC</a>, which was a language developed for <a href="Multi-user_dungeon" title="Multi-user dungeon">MUDs</a>. Programmers at <a href="Lysator" title="Lysator">Lysator</a> in <a href="Link%C3%B6ping" title="Linköping">Linköping</a>, Sweden, most notably Fredrik Hübinette and Per Hedbor,<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> separated the language and virtual machine from the rest of the MUD driver, and used it as a rapid prototyping language for various applications, calling it LPC4.
</p><p>LPC's license did not allow use for commercial purposes, and so a new GPL implementation was written in 1994, called μLPC (micro LPC).
</p><p>In 1996, μLPC was renamed to Pike in order to provide a more commercially viable name. Although the name of the company has changed over the years, the company now known as Roxen Internet Software employed many Pike developers, and provided resources for Pike's development. <a href="Roxen_(web_server)" title="Roxen (web server)">Roxen</a> is also the name of a web server developed by the company in Pike. In 2002, the programming environment laboratory at <a href="Link%C3%B6ping_University" title="Linköping University">Linköping University</a> took over maintenance of Pike from Roxen. Several Pike programmers have found their way to the Linköping office of <a href="Opera_Software" class="mw-redirect" title="Opera Software">Opera Software</a>, where the language plays a central role in the server/gateway parts of the <a href="Opera_Mini" title="Opera Mini">Opera Mini</a> application.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="Example">Example</h2></div>
<div class="mw-highlight mw-highlight-lang-pike mw-content-ltr" dir="ltr"><pre><span class="kt">int</span><span class="w"> </span><span class="nf">main</span><span class="p">()</span>
<span class="p">{</span>
<span class="w"> </span><span class="n">write</span><span class="p">(</span><span class="s">"Hi there! What's your name?</span><span class="se">\n</span><span class="s">"</span><span class="p">);</span>
<span class="w"> </span><span class="kt">string</span><span class="w"> </span><span class="n">name</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">Stdio</span><span class="p">.</span><span class="n">stdin</span><span class="o">-></span><span class="n">gets</span><span class="p">();</span>
<span class="w"> </span><span class="n">write</span><span class="p">(</span><span class="s">"Nice to meet you, "</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="n">name</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="s">"!</span><span class="se">\n</span><span class="s">"</span><span class="p">);</span>
<span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
<span class="p">}</span>
</pre></div>
<div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2></div>
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<ul><li><a href="LPMud_family_tree" class="mw-redirect" title="LPMud family tree">LPMud family tree</a></li></ul>
<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>
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<div class="mw-references-wrap"><ol class="references">
<li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">
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</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://pike.lysator.liu.se/about/pike/history.xml">"The history of pike"</a>.</cite></span>
</li>
<li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><cite id="CITEREFLextrait2010" class="citation web cs1">Lextrait, Vincent (January 2010). <a rel="nofollow" class="external text" href="https://archive.today/20120530/http://www.lextrait.com/Vincent/implementations.html">"The Programming Languages Beacon, v10.0"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.lextrait.com/Vincent/implementations.html">the original</a> on 30 May 2012<span class="reference-accessdate">. Retrieved <span class="nowrap">14 March</span> 2010</span>.</cite></span>
</li>
<li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://news.ycombinator.com/item?id=31453477">"Hacker News - Pike Programming Language - Discussion - We built the Opera Mini server infrastructure based on Pike, starting back in 20..."</a> <i>news.ycombinator.com</i><span class="reference-accessdate">. Retrieved <span class="nowrap">1 August</span> 2023</span>.</cite></span>
</li>
</ol></div></div>
<div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2></div>
<ul><li><span class="official-website"><span class="url"><a rel="nofollow" class="external text" href="https://pike.lysator.liu.se/">Official website</a></span></span> </li>
<li><a rel="nofollow" class="external text" href="http://www.gotpike.org/">Community Page</a></li>
<li><cite id="CITEREFKarlberg2006" class="citation web cs1 cs1-prop-foreign-lang-source">Karlberg, Lars Anders (14 August 2006). <a rel="nofollow" class="external text" href="https://www.nyteknik.se/nyheter/doldis-fran-linkoping-byggde-forsta-webben/399953">"Doldis från Linköping byggde första webben"</a>. <i>NyTeknik</i> (in Swedish)<span class="reference-accessdate">. Retrieved <span class="nowrap">1 August</span> 2023</span>.</cite></li></ul>
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</style><div id="Programming_languages625" style="font-size:114%;margin:0 4em"><a href="Programming_language" title="Programming language">Programming languages</a></div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div>
<ul><li><a href="Comparison_of_programming_languages" title="Comparison of programming languages">Comparison</a></li>
<li><a href="Timeline_of_programming_languages" title="Timeline of programming languages">Timeline</a></li>
<li><a href="History_of_programming_languages" title="History of programming languages">History</a></li></ul>
</div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="Ada_(programming_language)" title="Ada (programming language)">Ada</a></li>
<li><a href="ALGOL" title="ALGOL">ALGOL</a>
<ul><li><a href="Simula" title="Simula">Simula</a></li></ul></li>
<li><a href="APL_(programming_language)" title="APL (programming language)">APL</a></li>
<li><a href="Assembly_language" title="Assembly language">Assembly</a></li>
<li><a href="BASIC" title="BASIC">BASIC</a>
<ul><li><a href="Visual_Basic" title="Visual Basic">Visual Basic</a>
<ul><li><a href="Visual_Basic_(classic)" title="Visual Basic (classic)">classic</a></li>
<li><a href="Visual_Basic_(.NET)" title="Visual Basic (.NET)">.NET</a></li></ul></li></ul></li>
<li><a href="C_(programming_language)" title="C (programming language)">C</a></li>
<li><a href="C%2B%2B" title="C++">C++</a></li>
<li><a href="C_Sharp_(programming_language)" title="C Sharp (programming language)">C#</a></li>
<li><a href="COBOL" title="COBOL">COBOL</a></li>
<li><a href="Erlang_(programming_language)" title="Erlang (programming language)">Erlang</a>
<ul><li><a href="Elixir_(programming_language)" title="Elixir (programming language)">Elixir</a></li></ul></li>
<li><a href="Forth_(programming_language)" title="Forth (programming language)">Forth</a></li>
<li><a href="Fortran" title="Fortran">Fortran</a></li>
<li><a href="Go_(programming_language)" title="Go (programming language)">Go</a></li>
<li><a href="Haskell" title="Haskell">Haskell</a></li>
<li><a href="Java_(programming_language)" title="Java (programming language)">Java</a></li>
<li><a href="JavaScript" title="JavaScript">JavaScript</a></li>
<li><a href="Julia_(programming_language)" title="Julia (programming language)">Julia</a></li>
<li><a href="Kotlin_(programming_language)" title="Kotlin (programming language)">Kotlin</a></li>
<li><a href="Lisp_(programming_language)" title="Lisp (programming language)">Lisp</a></li>
<li><a href="Lua" title="Lua">Lua</a></li>
<li><a href="MATLAB" title="MATLAB">MATLAB</a></li>
<li><a href="ML_(programming_language)" title="ML (programming language)">ML</a>
<ul><li><a href="Caml" title="Caml">Caml </a>
<ul><li><a href="OCaml" title="OCaml">OCaml</a></li></ul></li></ul></li>
<li><a href="Pascal_(programming_language)" title="Pascal (programming language)">Pascal</a>
<ul><li><a href="Object_Pascal" title="Object Pascal">Object Pascal</a></li></ul></li>
<li><a href="Perl" title="Perl">Perl </a>
<ul><li><a href="Raku_(programming_language)" title="Raku (programming language)">Raku</a></li></ul></li>
<li><a href="PHP" title="PHP">PHP</a></li>
<li><a href="Prolog" title="Prolog">Prolog</a></li>
<li><a href="Python_(programming_language)" title="Python (programming language)">Python</a></li>
<li><a href="R_(programming_language)" title="R (programming language)">R</a></li>
<li><a href="Ruby_(programming_language)" title="Ruby (programming language)">Ruby</a></li>
<li><a href="Rust_(programming_language)" title="Rust (programming language)">Rust</a></li>
<li><a href="SAS_language" title="SAS language">SAS</a></li>
<li><a href="SQL" title="SQL">SQL</a></li>
<li><a href="Scratch_(programming_language)" title="Scratch (programming language)">Scratch</a></li>
<li><a href="Shell_script" title="Shell script">Shell</a></li>
<li><a href="Smalltalk" title="Smalltalk">Smalltalk</a></li>
<li><a href="Swift_(programming_language)" title="Swift (programming language)">Swift</a></li>
<li><i><a href="List_of_programming_languages" title="List of programming languages">more...</a></i></li></ul>
</div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div>
<ul><li><span class="noviewer" typeof="mw:File"><span title="List-Class article"></span></span> <b>Lists:</b> <a href="List_of_programming_languages" title="List of programming languages">Alphabetical</a></li>
<li><a href="List_of_programming_languages_by_type" title="List of programming languages by type">Categorical</a></li>
<li><a href="Generational_list_of_programming_languages" title="Generational list of programming languages">Generational</a></li>
<li><a href="Non-English-based_programming_languages" title="Non-English-based programming languages">Non-English-based</a></li>
<li><span class="noviewer" typeof="mw:File"><span title="Category"></span></span> Category</li></ul>
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