bit (version 1.1-15.2)

clone: Cloning ff and ram objects

Description

clone physically duplicates objects and can additionally change some features, e.g. length.

Usage

clone(x, …)
# S3 method for list
clone(x, …)
# S3 method for default
clone(x, …)
still.identical(x, y)

Arguments

x

x

y

y

…

further arguments to the generic

Value

an object that is a deep copy of x

Details

clone is generic. clone.default currently only handles atomics. clone.list recursively clones list elements. still.identical returns TRUE if the two atomic arguments still point to the same memory.

See Also

clone.ff

Examples

# NOT RUN {
  x <- 1:12
  y <- x
  still.identical(x,y)
  y[1] <- y[1]
  still.identical(x,y)
  y <- clone(x)
  still.identical(x,y)
  rm(x,y); gc()
# }