attachLocally.list: Assigns an objects elements locally

In HenrikBengtsson/R.utils: Various Programming Utilities

Assigns an objects elements locally

Description

Assigns an objects elements locally.

Usage

## S3 method for class 'list'
attachLocally(object, fields=NULL, excludeFields=NULL, overwrite=TRUE,
  envir=parent.frame(), ...)

Arguments

object	An object with named elements such as an environment, a list, or a data.frame.
fields	A character vector specifying elements to be copied. If NULL, all elements are considered.
excludeFields	A character vector specifying elements not to be copied. This has higher priority than fields.
overwrite	If FALSE, fields that already exists will not be copied.
envir	The environment where elements are copied to.
...	Not used.

Value

Returns (invisibly) a character vector of the fields copied.

Author(s)

Henrik Bengtsson

See Also

attachLocally() of class Object. attach().

Examples

foo <- function(object) {
  cat("Local objects in foo():\n")
  print(ls())

  attachLocally(object)

  cat("\nLocal objects in foo():\n")
  print(ls())

  for (name in ls()) {
    cat("\nObject '", name, "':\n", sep="")
    print(get(name, inherits=FALSE))
  }
}

a <- "A string"
l <- list(a=1:10, msg="Hello world", df=data.frame(a=NA, b=2))
foo(l)
print(a)

HenrikBengtsson/R.utils documentation built on Feb. 28, 2025, 5:54 p.m.