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# SwiftLanguageMode

The Swift language mode used to compile Swift sources in the package

```
enum SwiftLanguageMode
```

## Topics

### Swift Language Modes

[`case v6`](/documentation/PackageDescription/SwiftLanguageMode/v6)

The identifier for the Swift 6 language version.

[`case v5`](/documentation/PackageDescription/SwiftLanguageMode/v5)

The identifier for the Swift 5 language version.

[`case v4_2`](/documentation/PackageDescription/SwiftLanguageMode/v4_2)

The identifier for the Swift 4.2 language version.

[`case v4`](/documentation/PackageDescription/SwiftLanguageMode/v4)

The identifier for the Swift 4 language version.

[`case version(String)`](/documentation/PackageDescription/SwiftLanguageMode/version(_:))

A user-defined value for the Swift version.

[`case v3`](/documentation/PackageDescription/SwiftLanguageMode/v3)

The identifier for the Swift 3 language version.

## Relationships

### Conforms To

[`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible)

[`Escapable`](/documentation/Swift/Escapable)

[`Copyable`](/documentation/Swift/Copyable)

---

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