retain: Retain Objects in an Environment
In memisc: Management of Survey Data and Presentation of Analysis Results

retain

R Documentation

Retain Objects in an Environment

Description

retain removes all objects from the environment except those mentioned as argument.

Usage

retain(..., list = character(0), envir = parent.frame(),force=FALSE)

Arguments

`...`	names of objects to be retained, as names (unquoted) or character strings(quoted).
`list`	a character vector naming the objects to be retained.
`envir`	the environment from which the objects are removed that are not to be retained.
`force`	logical value. As a measure of caution, this function removes objects only from local environments, unless `force` equals TRUE. In that case, `retain` can also be used to clear the global environment, the user's workspace.

Examples

local({
  foreach(x=c(a,b,c,d,e,f,g,h),x<-1)
  cat("Objects before call to 'retain':\n")
  print(ls())
  retain(a)
  cat("Objects after call to 'retain':\n")
  print(ls())
})
x <- 1
y <- 2
retain(x)

memisc documentation built on Oct. 24, 2024, 5:07 p.m.