[Rd] Wish List: base::source() + Add Execution Time Argument

[Juan Telleria]

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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