<s>
The	O
join-calculus	B-Language
is	O
a	O
process	O
calculus	O
developed	O
at	O
INRIA	O
.	O
</s>
<s>
The	O
join-calculus	B-Language
was	O
developed	O
to	O
provide	O
a	O
formal	O
basis	O
for	O
the	O
design	O
of	O
distributed	O
programming	O
languages	O
,	O
and	O
therefore	O
intentionally	O
avoids	O
communications	O
constructs	O
found	O
in	O
other	O
process	O
calculi	O
,	O
such	O
as	O
rendezvous	B-Operating_System
communications	O
,	O
which	O
are	O
difficult	O
to	O
implement	O
in	O
a	O
distributed	O
setting	O
.	O
</s>
<s>
Despite	O
this	O
limitation	O
,	O
the	O
join-calculus	B-Language
is	O
as	O
expressive	O
as	O
the	O
full	O
π-calculus	O
.	O
</s>
<s>
Encodings	O
of	O
the	O
π-calculus	O
in	O
the	O
join-calculus	B-Language
,	O
and	O
vice	O
versa	O
,	O
have	O
been	O
demonstrated	O
.	O
</s>
<s>
The	O
join-calculus	B-Language
is	O
a	O
member	O
of	O
the	O
π-calculus	O
family	O
of	O
process	O
calculi	O
,	O
and	O
can	O
be	O
considered	O
,	O
at	O
its	O
core	O
,	O
an	O
asynchronous	O
π-calculus	O
with	O
several	O
strong	O
restrictions	O
:	O
</s>
<s>
However	O
,	O
as	O
a	O
language	O
for	O
programming	O
,	O
the	O
join-calculus	B-Language
offers	O
at	O
least	O
one	O
convenience	O
over	O
the	O
π-calculus	O
—	O
namely	O
the	O
use	O
of	O
multi-way	O
join	O
patterns	O
,	O
the	O
ability	O
to	O
match	O
against	O
messages	O
from	O
multiple	O
channels	O
simultaneously	O
.	O
</s>
<s>
The	O
join-calculus	B-Language
programming	O
language	O
is	O
a	O
new	O
language	O
based	O
on	O
the	O
join-calculus	B-Language
process	O
calculus	O
.	O
</s>
<s>
It	O
is	O
implemented	O
as	O
an	O
interpreter	O
written	O
in	O
OCaml	B-Language
,	O
and	O
supports	O
statically	O
typed	O
distributed	O
programming	O
,	O
transparent	O
remote	O
communication	O
,	O
agent-based	O
mobility	O
,	O
and	O
some	O
failure-detection	O
.	O
</s>
<s>
Though	O
not	O
explicitly	O
based	O
on	O
join-calculus	B-Language
,	O
the	O
rule	O
system	O
of	O
CLIPS	B-Application
implements	O
it	O
if	O
every	O
rule	O
deletes	O
its	O
inputs	O
when	O
triggered	O
(	O
retracts	O
the	O
relevant	O
facts	O
when	O
fired	O
)	O
.	O
</s>
<s>
Many	O
implementations	O
of	O
the	O
join-calculus	B-Language
were	O
made	O
as	O
extensions	O
of	O
existing	O
programming	O
languages	O
:	O
</s>
