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# softShrink(a:)

Creates an instance of a soft shrink activation layer using the lambda value you specify for the soft shrink formation.

```
class func softShrink(a: Float) -> Self
```

## Parameters

`a`

The lambda value for the soft shrink formation.

## Return Value

A new `MLCActivationLayer` instance.

## Discussion

The [`softShrink(a:)`](/documentation/MLCompute/MLCActivationLayer/softShrink(a:)) factory type method creates an activation descriptor using [`init(type:a:)`](/documentation/MLCompute/MLCActivationDescriptor/init(type:a:)), where `type =` [`MLCActivationType.softShrink`](/documentation/MLCompute/MLCActivationType/softShrink) and `a = lambda`, and passes that descriptor to [`init(descriptor:)`](/documentation/MLCompute/MLCActivationLayer/init(descriptor:)).

---

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