I don't know how many files you are planning to open, but what you
also might run into is the maximum number of connections namely 125.
See ?file.
Jan
[email protected] schreef:
Hi,
I thought that 'R' like java will allow me to store file names
(keys) and file descriptors(values) in a hashmap.
filelist.array <- function(n){
sink("nmon.log")
cpufile <- new.env(hash=T, parent=emptyenv())
for (i in 1:n) {
key <- paste("output", i, ".txt", sep = "")
assign(key, file( key, "w" ), cpufile)
}
sink()
return (cpufile)
}
But when I try to test it like this there is an exception
[1] "Exception is Error in UseMethod(\"close\"): no applicable method for
'close' applied to an object of class \"c('integer', 'numeric')\"\n"
test.simple.filelist.array <- function() {
execution <- tryCatch({
sink("nmon.log")
listoffiles <- filelist.array(3)
for (v in ls(listoffiles)) {
print(paste("Map value is [", listoffiles[[v]], "]"))
fd <- listoffiles[[v]]
close(fd)
}
sink()
}, error = function(err){
print(paste("Exception is ",err))
})
}
I think I am missing some fundamentals.
Thanks,
Mohan
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