stop {base} | R Documentation |
stop
stops execution of the current expression, prints the
message given as its argument, then executes an error action.
geterrmessage
gives the last error message.
stop(message) geterrmessage()
message |
a character vector (of length 1) or NULL . |
The error action is controlled by the current error handler set by
options(error=)
. The default behaviour (the NULL
error-handler) in interactive use is
to return to the top level prompt, and in non-interactive use to
(effectively) call q("no", status=1, runLast=FALSE
).
geterrmessage
gives the last error message, as character string
ending in "\n"
.
warning
, restart
to catch errors and retry,
and options
for setting error handlers.
if(iter > 10) stop("too many iterations")