On 10/02/2009, at 12:55 PM, Duncan Murdoch wrote:
On 09/02/2009 6:27 PM, Fuchs Ira wrote:
a=function() {
print("start")
print(Sys.time())
Sys.sleep(5)
print(Sys.time())
print("end") }
a()
results in:
[1] "start"
[1] "2009-02-09 18:25:41 EST"
[1] "2009-02-09 18:25:46 EST"
[1] "end"
all printed together after 5 seconds.
The reason for this mysterious difference is presumably that you
are not
using the same front-end as Rolf, or maybe not the same version as
him,
or maybe you have the buffering set differently.
sessionInfo() would remove some of the mystery, but I don't think it
says which Mac front end you're using. We should fix that. (It's not
just a Mac deficiency, Windows has the same omission.)
Looking at the code of flush.console() (suggested by Remko Duursma)
solved the mystery. It refers to the AQUA GUI. I don't use the
GUI as a rule; I start R from the command line.
When I started R from the GUI I got the same buffered phenomenon
that afflicted Ira Fuchs. So one solution to his problem would
presumably be to start R from the command line rather than by
clicking on the GUI.
There must be a way to switch off buffering when using the AQUA GUI
though. Mustn't there?
cheers,
Rolf Turner
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