---
title: CXXLanguageStandard.cxx1z
framework: swift-package-manager
role: symbol
role_heading: Case
path: swift-package-manager/documentation/packagedescription/cxxlanguagestandard/cxx1z
---

# CXXLanguageStandard.cxx1z

The identifier for the ISO C++ 2017 language standard with amendments.

## Declaration

```swift
case cxx1z
```

## See Also

### Enumeration Cases

- [CXXLanguageStandard.cxx03](swift-package-manager/documentation/packagedescription/cxxlanguagestandard/cxx03.md)
- [CXXLanguageStandard.cxx11](swift-package-manager/documentation/packagedescription/cxxlanguagestandard/cxx11.md)
- [CXXLanguageStandard.cxx14](swift-package-manager/documentation/packagedescription/cxxlanguagestandard/cxx14.md)
- [CXXLanguageStandard.cxx98](swift-package-manager/documentation/packagedescription/cxxlanguagestandard/cxx98.md)
- [CXXLanguageStandard.gnucxx03](swift-package-manager/documentation/packagedescription/cxxlanguagestandard/gnucxx03.md)
- [CXXLanguageStandard.gnucxx11](swift-package-manager/documentation/packagedescription/cxxlanguagestandard/gnucxx11.md)
- [CXXLanguageStandard.gnucxx14](swift-package-manager/documentation/packagedescription/cxxlanguagestandard/gnucxx14.md)
- [CXXLanguageStandard.gnucxx1z](swift-package-manager/documentation/packagedescription/cxxlanguagestandard/gnucxx1z.md)
- [CXXLanguageStandard.gnucxx98](swift-package-manager/documentation/packagedescription/cxxlanguagestandard/gnucxx98.md)
- [CXXLanguageStandard.cxx17](swift-package-manager/documentation/packagedescription/cxxlanguagestandard/cxx17.md)
- [CXXLanguageStandard.cxx20](swift-package-manager/documentation/packagedescription/cxxlanguagestandard/cxx20.md)
- [CXXLanguageStandard.cxx2b](swift-package-manager/documentation/packagedescription/cxxlanguagestandard/cxx2b.md)
- [CXXLanguageStandard.gnucxx17](swift-package-manager/documentation/packagedescription/cxxlanguagestandard/gnucxx17.md)
- [CXXLanguageStandard.gnucxx20](swift-package-manager/documentation/packagedescription/cxxlanguagestandard/gnucxx20.md)
- [CXXLanguageStandard.gnucxx2b](swift-package-manager/documentation/packagedescription/cxxlanguagestandard/gnucxx2b.md)