Dear all,
Onetime 0.1.0, a utility package of interest to package developers, is now
on CRAN:
https://cran.r-project.org/package=onetime
Onetime uses lockfiles to perform an action only once (ever, or with an
expiry date) on a given computer. For example, it can send a message or
warning:
for (i in 1:10) {
onetime_message("This will be shown only once", id =
"my-message")
}
It also lets you send a message and confirm the user doesn't need to see it
again:
onetime_message_confirm("User can opt not to show this message again",
id =
"my-confirm-message")
Onetime checks that you have permission to store files on the user's
computer, and allows package authors to ask for this permission using
check_ok_to_store().
Package authors can use onetime to print one-off informative messages for
new users, or to do other one-off actions.
Documentation is available at https://hughjonesd.github.io/onetime/.
Cheers,
David
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