Act on each element if 'x' is a list
dimnames(x, along = TRUE, null_as_integer = FALSE,
drop = !identical(along, TRUE))
A list of dimension names with length length(ndim(X))
An n-dimensional array
Limit to dimension (default: all)
Whether nameless dimensions should be NULL
or
numbered
Drop list of only one axis requested (default: if not returning all dimensions)