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  "identifier" : "/documentation/Accelerate/BNNS/PermuteLayer/init(input:output:permutation:filterParameters:)",
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# init(input:output:permutation:filterParameters:)

Returns a new permute layer.

```
convenience init?(input: BNNSNDArrayDescriptor, output: BNNSNDArrayDescriptor, permutation: [Int], filterParameters: BNNSFilterParameters? = nil)
```

## Parameters

`input`

The descriptor of the input.

`output`

The descriptor of the output.

`permutation`

The array that defines the permutation.

`filterParameters`

The filter runtime parameters.

## Discussion

> Important:
> The number of input dimensions must be equal to number of output dimensions.

---

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