Prepared by

1
Course Summary
Programming Language Principles Lecture 32

• Prepared by
• Manuel E. Bermúdez, Ph.D.
• Associate Professor
• University of Florida

2
Course Topics

• Paradigms.
• Parsing.
• RPAL.
• Names, Scopes and Bindings.
• Attribute Grammars.
• Control Flow.
• Data Types.
• Subprograms.
• Denotational Semantics.
• Logic Programming.

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Course Topics (contd)

• Concurrent Programming.
• Object-Oriented Programming.
• Focus on issues Linguistics of Programming.
• Two parts
• Syntax (easy).
• Semantics (hard).

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Programming (Language) Paradigms

• FOUR PARADIGMS OF COMPUTING
• Imperative
• WHAT DO WE DO NEXT ?
• Functional
• WHAT IS THE FUNCTIONS VALUE ?
• Logic
• WHAT CONDITIONS ARE NEEDED ?
• Object-Oriented
• WHAT IS THE OBJECTS BEHAVIOR ?

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Topics Not Covered

• Programming Language Design.
• Programming Language Implementation.
• Formal Models for Type Systems.
• Axiomatic Approach to Semantics.
• History of Programming Languages.
• For a very nice presentation, see Chapter 24 of
• www.webber-labs.com/mpl/lectures/index.html

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Some Observations

• Programming Languages are
• Like humans
• Love/hate relationship.
• Incredibly diverse. PAL is listed among the
  2500 languages at
• http//people.ku.edu/nkinners/
• LangList/Extras/langlist.htm
• RPAL is also among 737 languages listed at
  http//www.99-bottles-of-beer.net

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Some Observations (contd)

• Programming languages are
• Subject to heated debates, (almost) religious
  fervor.
• See comp.lang. newsgroups.
• Constantly evolving, with many dialects.
• Unpredictable when it comes to achieving
  widespread use.

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Some Observations (contd)

• Programming languages are
• Influential on programming practice (and
  vice-versa).
• Gotos, O-O programming.
• Influential on machine architecture (and
  vice-versa). Think of
• Stack support, parallel computing, Internet.
• Lately, power efficiency.

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Some Observations (contd)

• Programming languages are
• A lot of FUN !
• A final quote, from Carl Sagan ...

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Course Summary
Programming Language Principles Lecture 32

• Prepared by
• Manuel E. Bermúdez, Ph.D.
• Associate Professor
• University of Florida