occam
Occam n 1 :
English scholastic philosopher and assumed author of Occam '
s Razor (
1285 -
1349 ) [
synonym : {
Occam }, {
William of Occam }, {
Ockham }, {
William of Ockham }]
(Note lower case ) A language based on {Anthony
Hoare }'s {CSP } and {David May }'s {EPL }. Named after the
English philosopher , William of Occam (1300 -1349 ) who
propounded {Occam 's Razor }. The occam language was designed
by David May of {INMOS } to easily describe {concurrent }
processes which communicate via one -way channels . It was
developed to run on the {INMOS } {transputer } but {compilers }
are available for {VAX }, {Sun } and {Intel } {MDS }, inter alia .
The basic entity in occam is the process of which there are
four fundamental types , {assignment }, input , output , and wait .
More complex processes are constructed from these using SEQ to
specify sequential execution , PAR to specify parallel
execution and ALT where each process is associated with an
input from a channel . The process whose channel inputs first
is executed . The fourth constructor is IF with a list of
conditions and associated processes . The process executed is
the one with the first true condition in textual order . There
is no {operator precedence }.
The original occam is now known as "occam 1 ". It was extended
to {occam 2 }.
{Simulator for VAX (ftp ://watserv1 .waterloo .edu /)}.
Tahoe mailing list : .
[David May et al , 1982 . "Concurrent algorithms "].
["Occam ", D . May , SIGPLAN Notices 18 (4 ):69 -79 , 1983 ].
(1994 -11 -18 )
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