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I am running a code with a very large for loop. Within that large loop, I have a second for loop that carries out some checks. If one of those checks is not satisfactory, I am using break to stop the second loop, but instead of continuing with the rest of the lines below, I want the code to go back to the line corresponding to the beginning of the first for loop and carry on the analysis with the next index. Is this possible?

Omar Velazquez
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    Please post a reproducible example with some code and data as described [here](https://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example). It is possible to do what you describe. There may also be a way of writing the code so it is not necessary. – SamR Sep 29 '22 at 17:11
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    You could wrap the rest of the second loop in a conditional that is skipped when the condition that triggers the break occurs. – John Coleman Sep 29 '22 at 17:16

1 Answers1

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You can create a sentinel value:

for (OL in ...) {
  # do something
  next_OL <- FALSE         # always set this before entering the inner loop
  for (IL in ...) {
    # do something else
    if (some_condition) {
      next_OL <- TRUE
      break                # breaks out of inner loop "IL"
    }
  }
  if (next_OL) next        # breaks out of outer loop "OL"
  # perhaps do more here
}
r2evans
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