How to execute something after an error in R/Shiny?

Question

I wanted to know if there is a way to execute something after an error ocurred.

I am currently working with some databases and I need to liberate resources after an error, with a statement like dbDisconnect(database)

Thank you

U can look at http://stackoverflow.com/questions/12193779/how-to-write-trycatch-in-r — Agaz Wani, May 28 '15 at 09:55

score 1 · Accepted Answer · answered May 28 '15 at 18:54

Use a tryCatch with the finally block

tryCatch({
  # some code that initializes database
  # some code that runs a query
}, finally = dbDisconnect(database) )

The expression inside finally gets run regardless of whether the code in the try block was successful or threw an error.

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