function - R: scope of local/global variables -

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i have 2 r chunks follows:

getdetails<-function(files){     read.csv(filenames) }  filenames<-list.files("data/", pattern=".csv", full.names=t) df<-lapply(filenames, getdetails)

in function, mistake when have mentioned filenames variable instead of files, don't error. there way make r warn this?

thanks.

environment(getdetails) = parent.env(environment(getdetails)) way remove global scope. works me. problem is, has done every function write.


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