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R Debugging

Debugging in R helps identify and fix errors in your code. Common debugging tools include browser(), traceback(), tryCatch(), and debug().

Key Topics

Using traceback()

# Example of traceback()
my_function <- function() {
    stop("An error occurred!")
}

my_function()
traceback()

Note:

traceback() shows the call stack leading to the error.

Using tryCatch()

The tryCatch() function is used to handle errors and run alternative code when an error occurs.

# Using tryCatch to handle errors
result <- tryCatch({
    stop("An error!")
}, error = function(e) {
    return("Error handled gracefully")
})

print(result)

Output:

[1] "Error handled gracefully"

Code Explanation: The tryCatch() function catches the error and executes the error-handling code block.

Key Takeaways

  • Use traceback() to trace the call stack of an error.
  • Use tryCatch() to handle errors gracefully.
  • Debugging tools help identify and fix issues in your R code.
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