<s>
In	O
computer	B-General_Concept
programming	I-General_Concept
,	O
rank	O
with	O
no	O
further	O
specifications	O
is	O
usually	O
a	O
synonym	O
for	O
(	O
or	O
refers	O
to	O
)	O
"	O
number	O
of	O
dimensions	O
"	O
;	O
thus	O
,	O
a	O
two-dimensional	O
array	O
has	O
rank	O
two	O
,	O
a	O
three-dimensional	O
array	O
has	O
rank	O
three	O
and	O
so	O
on	O
.	O
</s>
<s>
Strictly	O
,	O
no	O
formal	O
definition	O
can	O
be	O
provided	O
which	O
applies	O
to	O
every	O
programming	O
language	O
,	O
since	O
each	O
of	O
them	O
has	O
its	O
own	O
concepts	O
,	O
semantics	B-Application
and	O
terminology	O
;	O
the	O
term	O
may	O
not	O
even	O
be	O
applicable	O
or	O
,	O
to	O
the	O
contrary	O
,	O
applied	O
with	O
a	O
very	O
specific	O
meaning	O
in	O
the	O
context	O
of	O
a	O
given	O
language	O
.	O
</s>
<s>
In	O
the	O
case	O
of	O
APL	B-Language
the	O
notion	O
applies	O
to	O
every	O
operand	O
;	O
and	O
dyads	O
(	O
"	O
binary	O
functions	O
"	O
)	O
have	O
a	O
left	O
rank	O
and	O
a	O
right	O
rank	O
.	O
</s>
<s>
The	O
box	O
below	O
instead	O
shows	O
how	O
rank	O
of	O
a	O
type	O
and	O
rank	B-Data_Structure
of	I-Data_Structure
an	I-Data_Structure
array	I-Data_Structure
expression	O
could	O
be	O
defined	O
(	O
in	O
a	O
semi-formal	O
style	O
)	O
for	O
C++	O
and	O
illustrates	O
a	O
simple	O
way	O
to	O
calculate	O
them	O
at	O
compile	O
time	O
.	O
</s>
