Access a combination stored in a CPV instance by index.
Usage
## S4 method for signature 'CPV'
x[i, j, drop]
Arguments
x
an instance of CPV.
i
an index specifying the position of the sought combination.
j
not used.
drop
not used.
Details
The combination at index i of pseudo-vector x is not actually
stored in memory but calculated as needed. The extract method is used solely
for interpretation.
Value
the combination located at position i in pseudo-vector x