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*View this file with results and syntax highlighting [here](https://mlochbaum.github.io/BQN/help/predicate.html).*
# Question Mark (`?`)
## `?`: Predicate
[→full documentation](../doc/block.md#predicates)
Follows a statement in a block, which must return 0 or 1. If it's 0, stop the current body and evaluate the next eligible one instead. Variables defined before the `?` stay if execution continues (1) but don't carry over to other bodies (0).
{0 ? 3 ; 4}
Min ← {𝕨<𝕩 ? 𝕨 ; 𝕩}
3 Min 5
4 Min 2
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