---
title: "data(using:allowLossyConversion:)"
framework: swift
role: symbol
role_heading: Instance Method
path: "swift/string/data(using:allowlossyconversion:)"
---

# data(using:allowLossyConversion:)

## Declaration

```swift
func data(using encoding: String.Encoding, allowLossyConversion: Bool = false) -> Data?
```