physical.default {bit} | R Documentation |
Physical and virtual attributes
Description
Compatibility functions (to package ff) for getting and setting physical and virtual attributes.
Usage
## Default S3 method:
physical(x)
## Default S3 replacement method:
physical(x) <- value
## Default S3 method:
virtual(x)
## Default S3 replacement method:
virtual(x) <- value
## S3 method for class 'physical'
print(x, ...)
## S3 method for class 'virtual'
print(x, ...)
physical(x)
physical(x) <- value
virtual(x)
virtual(x) <- value
Arguments
x |
a ff or ram object |
value |
a list with named elements |
... |
further arguments |
Details
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.
ff::as.ram()
will retain some physical and virtual atrributes in
the ram clone, such that ff::as.ff()
can restore an ff object
with the same attributes.
Value
physical
and virtual
returns a list with named elements
Author(s)
Jens Oehlschlägel
See Also
ff::physical.ff()
, ff::physical.ffdf()
Examples
physical(bit(12))
virtual(bit(12))
[Package bit version 4.6.0 Index]