# none: when there is no value

[Syntax and values](README.md)

Sometimes a value is absent. Pliro calls that none. It is different from zero, false, and an empty text.

## Behavior and details

None is the single absence value, written none in English. A function with a bare return or no explicit return produces it. It is distinct from false, zero, empty text, and an empty list. Compare with == or !=; it cannot be a condition, collection index, or Map key. App-private [JSON-compatible](../concepts/json.md) storage can store None.

## Example

```pliro
# language: en
function finish():
    return
let result = finish()
say result == none
say text(result)
```

## Related entries

[Syntax and values](README.md) · [Built-ins](../builtins/README.md) · [Programming guides](../guides/README.md)