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Wolfram Language & System Documentation Center

Break

See Also
- Continue
- Return
- Goto
- Abort
- Do
- For
- Until
- While
- Throw
- Catch
Related Guides
- Flow Control
- Looping Constructs
Tech Notes
- Loops and Control Structures
- See Also
  - Continue
  - Return
  - Goto
  - Abort
  - Do
  - For
  - Until
  - While
  - Throw
  - Catch
- Related Guides
  - Flow Control
  - Looping Constructs
- Tech Notes
  - Loops and Control Structures

Break

exits the nearest enclosing Do, For, Until or While.

Details

Break[] takes effect as soon as it is evaluated, even if it appears inside other functions.
After a Break the value Null is returned from the enclosing control structure.
The function of Break can also be achieved using Throw and Catch.

Examples

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Basic Examples (1)

Break out of the Do when i is larger than 2:

Scope (1)

Break out of a Do loop:

Break out of a For loop:

Break out of a While loop:

Applications (1)

Test the condition of a loop during or at the end of the loop:

Properties & Relations (2)

Use Throw and Catch instead of Break:

Continue skips the rest of a loop, but resumes with the next iteration:

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