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Compatibility functions (to package ff) for getting and setting physical and virtual attributes.
# S3 method for default
physical(x)# S3 method for default
physical(x) <- value
# S3 method for default
virtual(x)
# S3 method for default
virtual(x) <- value
# S3 method for physical
print(x, ...)
# S3 method for virtual
print(x, ...)
physical(x)
physical(x) <- value
virtual(x)
virtual(x) <- value
physical and virtual returns a list with named
elements
a ff or ram object
a list with named elements
further arguments
Jens Oehlschlägel
ff objects have physical and virtual attributes, which have different
copying semantics: physical attributes are shared between copies of ff
objects while virtual attributes might differ between copies.
as.ram will retain some physical and virtual atrributes in
the ram clone, such that as.ff can restore an ff object
with the same attributes.
physical.ff, physical.ffdf
physical(bit(12))
virtual(bit(12))
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