Retain Objects in an Environment
retain removes all objects from the environment
except those mentioned as argument.
retain(..., list = character(0), envir = parent.frame(),force=FALSE)
... |
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 |
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)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.