Simple extraction and replacement function
to access xts .CLASS attribute. The .CLASS
attribute is used by reclass to transform
an xts object back to its original class.
CLASS(x)CLASS(x) <- value
an xts object
the new .CLASS value to assign
Called for its side-effect of changing the .CLASS attribute
It is not recommended that CLASS be called in
daily use. While it may be possible to coerce objects
to other classes than originally derived from, there is
little, if any, chance that the reclass function
will perform as expected.
It is best to use the traditional as methods.