The altrep class is a raw vector whose
value uniquely distinguishes the class from other classes.
The altrep class is not the same as the name of the class. For that,
you can use alt_classname().
You are unlikely
to find much meaning in the actual vector values, but you might find it
useful to check if two objects belong to the same class. The other
meaningful use of the class is to check its attributes(), but it is
recommended that you instead use the dedicated wrapper functions for
these attributes: alt_classname(), alt_pkgname(), and alt_type(), or
alt_details().
Examples
identical(alt_class(1:2), alt_class(2:3))
#> [1] TRUE