# All N (ALLN)

> QuantNexus indicator page for ALLN utility logic.

**Route**: `/quantnexus/indicators/alln/`

## What It Does

ALLN checks whether all values in the lookback window satisfy a condition or remain in a desired state. It is more of a utility logic line than a classic market indicator.

## Formula

ALLN returns true or 1 when all observations in the last `n` periods satisfy the configured condition.

## Parameters

- `period` - default `14`

## C++23 API

```cpp
#include <nonabt/indicators/alln.hpp>
auto alln = std::make_unique<nonabt::ALLN>(data(), 14);
```

## Common Usage

- Use ALLN as a rule helper.
- Combine it with other indicators to confirm persistence.
- Useful for "all bars meet condition" logic.

## Practical Pattern

ALLN is better thought of as a boolean filter than a directional signal line.