is.qb_blocking checks whether the provided object is a valid instance
of the qb_blocking class.
Usage
is.qb_blocking(x)
Arguments
x
object to check.
Value
Returns TRUE if x is a valid qb_blocking
object, otherwise FALSE.
Details
is.qb_blocking does not check whether the blocking itself is sensible
or whether it satisfies some set of constraints. See
check_clustering for that functionality.