R help - Mar 2010 - how to update R files included as"source" ?

Hi all,

I have a main file main.R in which I include some other R files. For
example, in main.R I have: source("functions.R").
When I modify the file "functions.R", I'd like R to take into
account the
changes and to reload the file functions.R when I run main.R
Is it possible?

Thanks,
Arnaud

	[[alternative HTML version deleted]]

Hello,

arnaud chozo wrote:
> Hi all,
> 
> I have a main file main.R in which I include some other R files. For
> example, in main.R I have: source("functions.R").
> When I modify the file "functions.R", I'd like R to take into
account the
> changes and to reload the file functions.R when I run main.R
> Is it possible?
> 
I don't understand.

You source a functions.R file from main.R. When you "run" main.R, 
whatever is in the functions.R file will be sourced.

What is happening that is different than you expect?

--Erik

Hi,

I'm afraid I really don't have time to enter into a dialogue :-{ but
this
fragment from a function of mine might help...
----------------------
      outfile <- sub("Rd$", "html", hfile,
ignore.case=TRUE)  # name of
corresponding html
      out.mod <- file.info(outfile)[,"mtime"]  # if html absent or
needs
updating
      if (is.na(out.mod)||file.info(hfile)[,"mtime"] > out.mod) 
tools::Rd2HTML(hfile, outfile, .Package) # do it
-----------------------
The third line (inter alia) checks the modification time of the 'target'
file and decides whether to process it.

Hope that helps,

Keith J
---------------
"arnaud chozo" <arnaud.chozo at gmail.com> wrote in message 
news:caebefd51003290824m67bebf96wd61315359ae972e4 at
mail.gmail.com...
> Hi all,
>
> I have a main file main.R in which I include some other R files. For
> example, in main.R I have: source("functions.R").
> When I modify the file "functions.R", I'd like R to take into
account the
> changes and to reload the file functions.R when I run main.R
> Is it possible?
>
> Thanks,
> Arnaud
>
> [[alternative HTML version deleted]]
>

arnaud chozo wrote:
> 
> When I modify the file "functions.R", I'd like R to take into
account the
> changes and to reload the file functions.R when I run main.R
> 
source again, and you old definitions will be overwritten.

Dieter


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