There is a simple way to achieve something similar: one can add a time
stamp to each line of output, e.g. using "ts" command from "moreutils".
Tomas
On 12/21/2017 06:45 PM, Jim Hester wrote:
R does provide the addTaskCallback / taskCallbackManager to run a
callback function after every top level command. However there is not
an equivalent interface that would be run _before_ each command, which
would make it possible to time of top level calls and provide other
execution measurements.
On Thu, Dec 21, 2017 at 11:31 AM, William Dunlap via R-devel
<r-devel@r-project.org> wrote:
Is source() the right place for this? It may be, but we've had customers
who would like
this sort of thing done for commands entered by hand. And there are those
who want
a description of any "non-triivial" objects created in .GlobalEnv by each
expression, ...
Do they need a way to wrap each expression evaluated in envir=.GlobalEnv
with a
function of their choice, one that would print times, datasets created,
etc.?
Bill Dunlap
TIBCO Software
wdunlap tibco.com
On Thu, Dec 21, 2017 at 3:46 AM, Juan Telleria <jteller...@gmail.com> wrote:
Dear R Developers,
Adding to source() base function a Timer which indicates the execution time
of the source code would be a very well welcome feature, and in my opinion
not difficult to implement as an additional funtion argument.
The source(timing = TRUE) function shall execute internally the following
code for each statement:
old <- Sys.time() # get start time at the beginning of source()
# source code
# print elapsed time
new <- Sys.time() - old # calculate difference
print(new) # print in nice format
Thank you.
Kind regards,
Juan Telleria
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