Coerce to ri
# S3 method for class 'ri'
as.ri(x, ...)
# Default S3 method
as.ri(x, ...)
as.ri(x, ...)an ri() object
CoercionToStandard, as.booltype(), as.bit(),
as.bitwhich() , as.which(), as.ri(), ff::as.hi(), ff::as.ff()
as.ri(c(FALSE, TRUE, FALSE, TRUE))
#> range index (ri) from 2 to 4 maxindex 4