# threshold property Null safety

final

The value before which the curve is 0.0 and after which the curve is 1.0.

When t is exactly threshold, the curve has the value 1.0.

## Implementation

```
final double threshold;
```

threshold

final

The value before which the curve is 0.0 and after which the curve is 1.0.

When t is exactly threshold, the curve has the value 1.0.

```
final double threshold;
```