---
title: "init(seed:)"
framework: gameplaykit
role: symbol
role_heading: Initializer
path: "gameplaykit/gkarc4randomsource/init(seed:)"
---

# init(seed:)

Initializes a random source with the specified seed data.

## Declaration

```swift
init(seed: Data)
```

## Parameters

- `seed`: A data object containing seed values for the random number generator.

## Return Value

Return Value A new, independent random source.

## Discussion

Discussion Any two random sources initialized with the same seed data will generate the same sequence of random numbers. To replicate the behavior of an existing GKARC4RandomSource instance, read that instance’s seed property and then create a new instance by passing the resulting data to the init(seed:) initializer. For a source of high-entropy seed data, see the SecRandomCopyBytes(_:_:_:) function.

## See Also

### Creating a Random Source

- [init()](gameplaykit/gkarc4randomsource/init().md)