[R] does R read commands from scripts instantanously or seuqently during processing

[Jeff Newmiller]

Your use of the "<" redirection operator is an operating system feature, not an R feature. I am not aware of any operating system that that would function properly in the use case you describe.

It is possible, and common, to construct your input file as a stream as you go. But a stream is not a file on disk.
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Sent from my phone. Please excuse my brevity.

Jannis <bt_jannis at yahoo.de> wrote:

>Dear R community,
>
>
>when I source a script into R via:
>
>
>R --slave < scriptname.R
>
>
>is the whole script file read at once during startup or is each 
>indivdual line of code read seqnetially during the execution (i.e. 
>directly before r processes the respective command)? In other words,
>can 
>I savely edit the  scriptname.R file even when an active R process
>still 
>runs the command above?
>
>
>Thanks for your help
>Jannis
>
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