---
title: Boolean Values
framework: objectivec
role: collectionGroup
role_heading: API Collection
path: objectivec/boolean-values
---

# Boolean Values

These macros define convenient constants to represent Boolean values.

## Topics

### Constants

- [YES](objectivec/yes.md)
- [NO](objectivec/no.md)

## See Also

### Constants

- [Null Values](objectivec/null-values.md)
- [Dispatch Function Prototypes](objectivec/dispatch-function-prototypes.md)
- [Objective-C Root Class](objectivec/objective-c-root-class.md)
- [Local Variable Storage Duration](objectivec/local-variable-storage-duration.md)