break and next
break ends a loop completely, while next skips only the current turn and continues with the following one. It is like leaving a game versus passing on one round.
In this page:
Syntax
for (item in vector_name) {
if (skip_condition) next
if (stop_condition) break
# body
}break and next
break immediately exits the nearest enclosing loop, while next skips the rest of the current iteration and moves to the next one -- R's equivalent of continue in other languages.
Both work inside for, while, and repeat loops. They give finer control over loop execution beyond the loop's own condition.
Note:
R uses
next where many other languages use continue -- remember this naming difference.Example: break and next
for (i in 1:10) {
if (i %% 2 == 0) {
next # skip even numbers
}
if (i > 7) {
break # stop once past 7
}
cat(i, "\n")
}Login to try C/C++/Java/PHP code in the editor
Related Topics
{# common_mistakes/chapter_summary/browser_support: on Hindi pages the
view already swaps in the hi_ translation fields (or blanks these
out if untranslated), so this renders correctly for both languages
without a lang_code check here. #}
Common Mistakes
- Using
nextoutside a loop, which gives an error. - Expecting
breakto leave all nested loops, when it only exits the innermost one. - Placing
nextafter code that should not run, so the statements before it still execute.
Chapter Summary
if,else, andifelse()choose between alternatives.for,while, andrepeatloops repeat code.breakandnextcontrol loop flow.
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