R's try() does not catch errors produced by file.remove() -


i trying catch error thrown file.remove(), when example excel file opened , therefore cannot removed. seems r's try() function doesn't work in case. following code still produces error console although argument silent set true , nothing stored variable:

removal.error <- try(file.remove("testfile.xlsx"), silent = t)

removal.error [1] false

any suggestions why case or workarounds catch such error?

nor try or trycatch functions catching error because remove.file function working (as said @bhas) , throws false value used handle error shown below:

write.csv2(x = data.frame(v1 = 1:10, v2 = letters[1:10]),            file = 'file.csv')  shell('start excel file.csv') # opens excel throw error  rem <- try(file.remove('file.csv')) rem # [1] false  if (rem == false) {   shell('taskkill /f /im excel.exe') # handle error pointed   rem_2 <- file.remove('file.csv')   if(rem_2 == false) { # if not case, warn user     warning(warnings())     class(rem) <- c(class(rem), "try-error") # , add try-error class 'rem'   } }

after that, you'll able handle you've planned.

obs: run code line line, otherwise r going faster excel , you're not going see error in console.


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