Occam - Programming language

Occam is a programming language created in 1983 by David May.

#730on PLDB

41Years Old

occam is a concurrent programming language that builds on the communicating sequential processes (CSP) process algebra, and shares many of its features. It is named after William of Ockham of Occam's Razor fame. occam is an imperative procedural language (such as Pascal). Read more on Wikipedia...

Tags: programming language
Early development of Occam happened in Inmos International plc
Explore Occam snippets on Rosetta Code
Occam on HOPL
Occam appears in the TIOBE Index
See also: (7 related languages) OCaml, Ease, Go, CSP, Pascal, Haskell, Python

Example from hello-world:

PROGRAM Hello
#USE ioconv

SEQ
  write.full.string(screen,"Hello World")

Example from the Hello World Collection:

PROGRAM Hello
-- Hello world in Occam
#USE ioconv

SEQ
  write.full.string(screen,"Hello World!")

Example from Wikipedia:

ALT
   count1 < 100 & c1 ? data
     SEQ
       count1 := count1 + 1
       merged ! data
   count2 < 100 & c2 ? data
     SEQ
       count2 := count2 + 1
       merged ! data
   status ? request
     SEQ
       out ! count1
       out ! count2

Language features

Feature	Supported	Example	Token
Strings	✓	"Hello world"	"
Print() Debugging	✓		write.full.string
Semantic Indentation	✓