# forge.strategy.require

```python
forge.strategy.require(condition: object, message: str) -> None
```

Stop the run with ``message`` unless ``condition`` is true.

A plain ``assert`` works the same way. Both stop the run, in ``compute()`` or in a hook, with
the
file and line of the check. ``condition`` is one true or false value: for an array write
``require(bool(x.all()), ...)``.

Since Forge API 1.