Subject: Re: [R] setting options only inside functions
The Python solution does not extend, at least not cleanly, to things
like dev on/ dev off or to Hadley's locale example. In any case if I
am reading the Python source correctly on how they handle user
interrupts this solution has the same non
The Python solution does not extend, at least not cleanly, to things
like dev on/ dev off or to Hadley's locale example. In any case if I
am reading the Python source correctly on how they handle user
interrupts this solution has the same non-robusness to user interrupts
issue that Bill's
In python, opening a connection using with allows for a temporary
assignment using as. So:
with file(/path/to/file) as con:
permanent_object = function(con)
would provide the return of function(con) globally, but close con. If
function(con) causes an error, con is still closed.
I agree with
-Original Message-
From: r-help-boun...@r-project.org
[mailto:r-help-boun...@r-project.org] On Behalf Of
luke-tier...@uiowa.edu
Sent: Friday, April 29, 2011 9:35 AM
To: Jonathan Daily
Cc: r-help@r-project.org; Hadley Wickham; Barry Rowlingson
Subject: Re: [R] setting options only
I would also love to see this implemented in R, as my current solution
to the issue of doing tons of open/close, dev/dev.off, etc. is to use
snippets in my IDE, and in the end I feel like it is a hack job. A
pythonic with function would also solve most of the situations where
I have had to use
Dear list members,
is it possible to set some options only inside a function so that the original
options are restored once the function is finished or aborted due to an error?
Until now I do something like:
dummy=function()
{
old.options=options(error=dummy1())
See ?on.exit
Jeremy
On Wednesday, April 27, 2011 9:16:13 AM UTC-4, Jannis wrote:
Dear list members,
is it possible to set some options only inside a function so that the
original options are restored once the function is finished or aborted due
to an error? Until now I do something
On 27.04.2011 15:16, Jannis wrote:
Dear list members,
is it possible to set some options only inside a function so that the original
options are restored once the function is finished or aborted due to an error?
Until now I do something like:
dummy=function()
{
There is probably a more elegant way to do this, but you could write
it into dummy1():
dummy1 - function()
{
...original function
options(old.options)
}
Alternatively, you could use ?tryCatch with the finally argument as a
call to options.
HTH,
Jon
On Wed, Apr 27, 2011 at 9:16 AM, Jannis
, 27.4.2011:
Von: Jonathan Daily biomathjda...@gmail.com
Betreff: Re: [R] setting options only inside functions
An: Jannis bt_jan...@yahoo.de
CC: r-help@r-project.org
Datum: Mittwoch, 27. April, 2011 13:35 Uhr
There is probably a more elegant way
to do this, but you could write
-Original Message-
From: r-help-boun...@r-project.org
[mailto:r-help-boun...@r-project.org] On Behalf Of Jannis
Sent: Wednesday, April 27, 2011 11:16 AM
To: Jonathan Daily
Cc: r-help@r-project.org
Subject: Re: [R] setting options only inside functions
Thanks to all who supplied
This has the side effect of ignoring errors
and even hiding the error messages. If you
are concerned about multiple calls to on.exit()
in one function you could define a new function
like
withOptions - function(optionList, expr) {
oldOpts - options(optionList)
Put together a list and we can see what might make sense. If we did
take this on it would be good to think about providing a reasonable
mechanism for addressing the small flaw in this function as it is
defined here.
Best,
luke
On Wed, 27 Apr 2011, Hadley Wickham wrote:
This has the side
Put together a list and we can see what might make sense. If we did
take this on it would be good to think about providing a reasonable
mechanism for addressing the small flaw in this function as it is
defined here.
In devtools, I have:
#' Evaluate code in specified locale.
with_locale -
From: h.wick...@gmail.com [mailto:h.wick...@gmail.com] On
Behalf Of Hadley Wickham
Sent: Wednesday, April 27, 2011 2:21 PM
To: luke-tier...@uiowa.edu
Cc: William Dunlap; r-help@r-project.org
Subject: Re: [R] setting options only inside functions
Put together a list and we can see what
but it's a little clumsy, because
with_connection(file(myfile.txt), {do stuff...})
isn't very useful because you have no way to reference the connection
that you're using. Ruby's blocks have arguments which would require
big changes to R's syntax. One option would to use pronouns:
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