PhysVirt: Physical and virtual attributes

In bit: Classes and Methods for Fast Memory-Efficient Boolean Selections

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. 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.

Value

physical and virtual returns a list with named elements

Author(s)

Jens Oehlschlägel

See Also

physical.ff, physical.ffdf

Examples

  physical(bit(12))
  virtual(bit(12))

bit documentation built on Sept. 20, 2024, 5:08 p.m.