Hi Joshua, Thank-you.
I did not realize that the call to return closed the connection
-Glenn
> On Aug 9, 2015, at 9:04 AM, Joshua Ulrich <josh.m.ulr...@gmail.com> wrote:
>
> On Sun, Aug 9, 2015 at 8:59 AM, Glenn Schultz <glennmschu...@me.com> wrote:
>> Hi All,
>>
>> I use connections to open and close data folders needed by my package.
>> After each function closes I get the following warnings (depending on the
>> connection that has been opened).
>>
>> 10: closing unused connection 3
>> (/Library/Frameworks/R.framework/Versions/3.2/Resources/library/BondLab/BondData/bondlabMBS4.rds)
>>
>> Below is the connection function that is related to the above warning:
>>
>> #------------------------------------------------------------------------------------
>> #' A connection function to BondData calling MBS cusps
>> #'
>> #' Opens a connection to the BondData folder to call MBS cusip data
>> #' @param MBS.id A character string the MBS.id or cusip number current
>> MBS.id is supported
>> #' @export
>> MBS <- function(MBS.id = "character"){
>> MBS.Conn <- gzfile(description = paste(system.file(package
>> = "BondLab"),
>> "/BondData/", MBS.id, ".rds", sep = ""), open
>> = "rb")
>> MBS <- readRDS(MBS.Conn)
>> return(MBS)
>> close.connection(MBS.Conn)
>> }
>>
>> I have googled this warning and it seems to be triggered when a function
>> terminates and the connection is open. But, I think the connection function
>> closes the connection once the object is returned. What am I doing wrong?
>>
> Your call to return() exits the function, so the close.connection()
> call is never evaluated. Considering using on.exit() to close the
> connection, since it will close the connection regardless of how the
> function exits (e.g. because of an error).
>
>> -Glenn
>> ______________________________________________
>> R-package-devel@r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-package-devel
>
>
>
> --
> Joshua Ulrich | about.me/joshuaulrich
> FOSS Trading | www.fosstrading.com
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