Dear Bill,
Many thanks ......
Yours sincrely,
AKSHAY M KULKARNI
________________________________
From: Bill Dunlap <williamwdun...@gmail.com>
Sent: Thursday, July 14, 2022 1:28 AM
To: akshay kulkarni <akshay...@hotmail.com>
Cc: R help Mailing list <r-help@r-project.org>
Subject: Re: [R] aborting the execution of a function...
You could write a function that returns an environment (or list if you prefer)
containing the results collected before the interrupt by using
tryCatch(interrupt=...). E.g.,
doMany <- function(names) {
resultEnv <- new.env(parent=emptyenv())
tryCatch(
for(name in names) resultEnv[[name]] <- Sys.sleep(1), # replace
Sys.sleep(1) by getStuffFromWeb(name)
interrupt = function(e) NULL)
resultEnv
}
Use it as
> system.time(e <- doMany(state.name<http://state.name>)) # hit Esc or ^C after
> a few seconds
^C user system elapsed
0.001 0.000 4.390
> names(e)
[1] "Alabama" "Alaska" "Arizona" "Arkansas"
> eapply(e, identity)
$Alabama
NULL
$Alaska
NULL
$Arizona
NULL
$Arkansas
NULL
-Bill
On Wed, Jul 13, 2022 at 12:20 PM akshay kulkarni
<akshay...@hotmail.com<mailto:akshay...@hotmail.com>> wrote:
Dear members,
I am running a large scraping code in a very powerful
AWS ec2 instance:
DATES <- getFirms Dates()
It iterates over 500 stocks from a website. Despite the power of the machine,
the execution is very slow.
If I abort the function (by ctrl + C), after, say 150th iteration, the DATES
object will still contain the scraped data untill the 150th iteration, right? (
The rest of the 350 entries will be NA's, I suppose).
Many thanks in advance.....
Yours sincerely,
AKSHAY M KULKARNI
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