Roberto Ierusalimschy

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Roberto Ierusalimschy
Ierusalimschy speaking at Lua conference in Moscow, 2017
Born (1960-05-21) 21 May 1960 (age 63)
EducationPontifical Catholic University of Rio de Janeiro (PUC-Rio)
Known forLua
Scientific career
FieldsComputer Science Programming Languages
InstitutionsPontifical Catholic University of Rio de Janeiro (PUC-Rio)
ThesisO=M : uma linguagem orientada a objetos para desenvolvimento rigoroso de programas (in Portuguese) (1990)
Doctoral advisorCarlos José Pereira de Lucena

Roberto Ierusalimschy (Brazilian Portuguese: [ʁoˈbɛʁtu jeɾuzaˈlĩski]; born 21 May 1960) is a Brazilian computer scientist, known for creating the Lua programming language. He holds a PhD in Computer Science from the Pontifical Catholic University of Rio de Janeiro where he has an appointment as a full professor of informatics. He did a post-doc at University of Waterloo in 1992[1] and was visiting professor at Stanford University in 2012.[2] He is the leading architect and the author of Programming in Lua.[3] He also created LPeg, a Lua library for implementing parsing expression grammars.[4]

In 2021, Roberto created Building a Programming Language, a project-based learning program where students learn how to build a programming language from scratch.


  1. ^ Roberto Ierusalimschy
  2. ^ "Our Team | Center for Latin American Studies".
  3. ^ Four editions: first ISBN 85-903798-1-7; second ISBN 85-903798-2-5; third ISBN 85-903798-5-X; and fourth ISBN 978-8590379867.
  4. ^ Ierusalimschy, R. (2009). "A Text Pattern-Matching Tool based on Parsing Expression Grammars". Software: Practice and Experience. 39 (3): 221–258. CiteSeerX doi:10.1002/spe.892. S2CID 7458752.

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