For the ease of method dispatch, there is an internal S4 class Integer, which is a subclass of numeric and has a straightforward validity method.
Integer
numeric
new("Integer",
.Data
Object of class "numeric"
"numeric"
Class "numeric", from data part. Class "vector", by class "numeric", distance 2.
"vector"
signature(from = "numeric", to = "Integer"): create a "Integer" object from a "numeric" vector.
signature(from = "numeric", to = "Integer")
"Integer"
Peter Ruckdeschel peter.ruckdeschel@uni-oldenburg.de
numeric, vector
vector