Editing Yukihiro Matsumoto

{{short description|Japanese computer scientist (born 1965)}}
{{Use dmy dates|date=December 2021}}
{{distinguish|Alexis Nolent}}{{Other uses|Matz (disambiguation){{!}}Matz}}
{{Infobox person
| name               = Yukihiro Matsumoto<br/>まつもと ゆきひろ
| image              = Yukihiro Matsumoto.JPG
| caption            = Yukihiro Matsumoto at the [[ACM International Collegiate Programming Contest]] in Tokyo, 14 March 2007
| children           = 4
| alma_mater         = [[University of Tsukuba]] (BS)<br />[[Shimane University]] (PhD candidate)
| occupation         = Computer scientist, programmer, author
| known_for          = [[Ruby (programming language)|Ruby]]
| native_name        = 松本 行弘
| other_names        = Matz
| birth_date         = {{birth date and age|df=yes|1965|4|14}}
| birth_place        = [[Osaka Prefecture]], Japan
}}
[[File:Yukihiro Matsumoto EuRuKo 2011.jpg|thumb|Matsumoto giving the keynote speech at EuRuKo 2011]]
[[File:Matz.jpg|thumb|Matsumoto accepting an award from the [[Free Software Foundation]] (founder [[Richard Stallman]], right) in 2012]]

{{nihongo|'''Yukihiro Matsumoto'''|まつもとゆきひろ|Matsumoto Yukihiro|extra=born 14 April 1965}}, also known as '''Matz''', is a Japanese computer scientist and [[software programmer]] best known as the chief designer of the [[Ruby (programming language)|Ruby]] [[programming language]] and its original reference implementation, [[Matz's Ruby Interpreter]] (MRI).

{{As of|2011}}, Matsumoto is the Chief Architect of Ruby at [[Heroku]], an online cloud [[platform-as-a-service]] in San Francisco. He is a fellow of the [[Rakuten Institute of Technology]], a research and development organization within [[Rakuten|Rakuten Group, Inc.]] He was appointed to the role of technical advisor for VASILY, Inc. starting in June 2014.<ref>{{cite web|url=http://vasily.jp/category/press/|title=PRESSRELEASE – 株式会社VASILY(ヴァシリー)|work=vasily.jp}}</ref>

==Early life==
Born in [[Osaka Prefecture]], Japan, he was raised in [[Tottori Prefecture|Tottori]] from the age of four. According to an interview conducted by ''Japan Inc.'', he was a self-taught programmer until the end of high school.<ref>{{cite web|url=http://www.japaninc.com/article.php?articleID=828|title=The Man Who Gave Us Ruby|work=japaninc.com|date=8 November 2006 }}</ref> He graduated with an information science degree from [[University of Tsukuba]] where he was a member of [[Ikuo Nakata]]'s research lab on programming languages and [[compiler]]s.

==Work==
He works for the Japanese open source company Netlab.jp. Matsumoto is known as one of the open-source evangelists in Japan. He has released several open source products, including cmail, the [[Emacs]]-based mail user agent, written entirely in [[Emacs Lisp]]. Ruby is his first piece of software that became known outside Japan.<ref>{{cite web|url= http://www.oreilly.com/pub/au/714|title=Yukihiro Matsumoto|date=1 February 2013|work= O’Reilly}}</ref>

===Ruby===
Matsumoto released the first version of the [[Ruby (programming language)|Ruby programming language]] on 21 December 1995.<ref>[http://eigenclass.org/hiki/ruby+0.95 More archeolinguistics: unearthing proto-Ruby] {{webarchive |url=https://web.archive.org/web/20151106023204/http://eigenclass.org/hiki/ruby+0.95 |date=6 November 2015 }}</ref><ref>{{cite web|url=http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/382|title=<nowiki>[ruby-talk:00382] Re: history of ruby</nowiki> |work=nagaokaut.ac.jp}}</ref> He still leads the development of the language's reference implementation, [[Ruby MRI|MRI]] (Matz's Ruby Interpreter).

===mruby===
In April 2012, Matsumoto open sourced his work on a new implementation of Ruby called [[mruby]].<ref>{{cite web|url=https://github.com/mruby/mruby|title=mruby: Lightweight Ruby|date=2 November 2017|via=GitHub}}</ref><ref>{{cite web|url=http://matt.aimonetti.net/posts/2012/04/20/mruby-and-mobiruby/|title=mruby and MobiRuby – Matt Aimonetti|author=Matt Aimonetti|work=aimonetti.net|date=20 April 2012 }}</ref> It is a minimal implementation based on his virtual machine, ritevm, and is designed to allow software developers to embed Ruby in other programs while keeping [[memory footprint]] small and performance optimized.

===streem===
In December 2014, Matsumoto open sourced his work on a new [[scripting language]] called ''streem'', a [[Concurrency (computer science)|concurrent]] language based on a programming model similar to [[Shell (computing)|shell]], with influences from Ruby, [[Erlang (programming language)|Erlang]], and other [[functional programming]] languages.<ref>{{cite web|url=https://github.com/matz/streem|title=matz/streem|work=GitHub}}</ref>

===Treasure Data===
Matsumoto has been listed as an investor for [[Treasure Data]]; many of the company's programs such as [[Fluentd]] use Ruby as their primary language.<ref>{{cite web|url=http://www.treasuredata.com/company|title=Company – Treasure Data|archive-url=https://web.archive.org/web/20150503031037/http://www.treasuredata.com/company|archive-date=2015-05-03|access-date=2022-01-01}}</ref>

==Written works==
* ''オブジェクト指向スクリプト言語 Ruby'' {{ISBN|4-756-13254-5}}
* ''Ruby in a Nutshell'' {{ISBN|0-596-00214-9}}
* ''The Ruby Programming Language'' {{ISBN|0-596-51617-7}}

==Recognition==
Matsumoto received the 2011 [[Award for the Advancement of Free Software]] from the [[Free Software Foundation]] (FSF) at the 2012 [[LibrePlanet]] conference at the [[University of Massachusetts Boston]] in Boston.<ref>{{cite web|url=http://www.fsf.org/news/2011-free-software-awards-announced|title=2011 Free Software Awards announced|work=[[Free Software Foundation]]|date=26 March 2012}}</ref>

Matz' demeanor has brought about a motto in the Ruby community: "Matz is nice and so we are nice," commonly abbreviated as MINASWAN.{{cn|date=April 2025}}

==Personal life==
Matsumoto is married and has four children. He is a member of [[the Church of Jesus Christ of Latter-day Saints]],<ref name="auto">{{cite web|title=Hi I'm まつもとゆきひろ (Matsumoto "Matz" Yukihiro)|quote=I am a computer programmer. I designed a programming language called 'Ruby.' I am a Mormon.|url=https://www.mormon.org/matz|work=mormon.org|archive-url=https://web.archive.org/web/20181012135128/https://www.mormon.org/matz |access-date=12 October 2018|archive-date=12 October 2018 }}</ref> having performed standard [[Missionary (LDS Church)|missionary]] service and become a [[Bishop (Latter Day Saints)|counselor in the bishopric]] in his church [[Ward (LDS Church)|ward]].<ref>{{cite web |url=https://cs.byu.edu/article/colloquium-yukihiro-matsumoto |title=Colloquium--Yukihiro Matsumoto  |website=[[Brigham Young University|BYU]] |archive-url=https://web.archive.org/web/20171109044433/https://cs.byu.edu/article/colloquium-yukihiro-matsumoto |access-date=9 November 2017|archive-date=9 November 2017 }}</ref>

==See also==
* [[Ruby (programming language)]]
* [[Ruby MRI]]
* [[Ruby on Rails]]

==References==
{{reflist}}

==External links==
{{Commons category}}
{{Wikiquote}}
* [http://www.rubyist.net/~matz/ Matz's web diary] (and [https://translate.google.com/translate?u=http%3A%2F%2Fwww.rubyist.net%2F%7Ematz%2F&langpair=ja%7Cen&hl=en&ie=UTF-8&oe=UTF-8&prev=%2Flanguage_tools translated to English] with Google Translate) {{in lang|ja}}
* [http://www.itconversations.com/shows/detail1638.html Ruby Design Principles talk] from IT Conversations
* [http://www.informit.com/articles/article.aspx?p=18225 The Ruby Programming Language] – An introduction to the language by its own author
* [http://dorai.wordpress.com/2007/08/08/treating-code-as-essay/ Treating Code as an Essay] – Matz's writeup for the book ''Beautiful Code'', edited by Andy Oram, Greg Wilson, O'Reilly, 2007. {{ISBN|0-596-51004-7}} {{ISBN|9780596510046}}

{{Ruby programming language}}
{{Authority control}}

{{DEFAULTSORT:Matsumoto, Yukihiro}}
[[Category:1965 births]]
[[Category:Living people]]
[[Category:Free software programmers]]
[[Category:Japanese computer programmers]]
[[Category:Japanese computer scientists]]
[[Category:Japanese Latter Day Saints]]
[[Category:People from Osaka Prefecture]]
[[Category:People from Tottori Prefecture]]
[[Category:Scientists from Osaka Prefecture]]
[[Category:Scientists from Tottori Prefecture]]
[[Category:Programming language designers]]
[[Category:Rakuten]]
[[Category:Ruby (programming language)]]
[[Category:University of Tsukuba alumni]]