<!--
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  "availability" : [
    "SwiftPM: 4.0.0 -"
  ],
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  "framework" : "PackageDescription",
  "identifier" : "/documentation/PackageDescription/SwiftLanguageMode/v4",
  "metadataVersion" : "0.1.0",
  "role" : "Case",
  "symbol" : {
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    "modules" : [
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    "preciseIdentifier" : "s:18PackageDescription17SwiftLanguageModeO2v4yA2CmF"
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  "title" : "SwiftLanguageMode.v4"
}
-->

# SwiftLanguageMode.v4

The identifier for the Swift 4 language version.

```
case v4
```

---

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