Chapter 17 Modifying iterations: `break`, `next` and `while`

In R, a standard looping sequence may be modified with the break, next and while statements.

17.1 `next`

next allows us to skip an iteration if a certain condition is met. It is used inside the loop and is usually joined by the if statement, as shown below:

for (val in x) {
    if (condition) {
        next
    }
    statement
}

17.2 `break`

The break statement is used inside a loop to terminate and exit the iteration when a certain condition is met.

for (val in x) {
    if (condition) {
        break
    }
    statement
}