OS 10.6 and 10.5 have previously been used; 10.4 has never been tested. 10.3 and older are PPC-only. Compiling with support for older versions of Mac OS (This section is out of date or incorrect) By default compiling C code on OS 10.6+ will produce binaries that won't run on OS 10.4 and 10.5. Dec 25, 2017 Apple does not include the actual GNU C/C compiler in the command-line tool for Xcode, or Xcode itself. There is a gcc/g 'compatibility' command that is available, but it is a special build of clang/clang that is using older gcc compatibility (-with-gxx-include-dir) include files.
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The latest C# compiler determines a default language version based on your project's target framework or frameworks. Visual Studio doesn't provide a UI to change the value, but you can change it by editing the csproj file. The choice of default ensures that you use the latest language version compatible with your target framework. You benefit from access to the latest language features compatible with your project's target. This default choice also ensures you don't use a language that requires types or runtime behavior not available in your target framework. Choosing a language version newer than the default can cause hard to diagnose compile-time and runtime errors.
The rules in this article apply to the compiler delivered with Visual Studio 2019 or the .NET Core 3.0 SDK. The C# compilers that are part of the Visual Studio 2017 installation or earlier .NET Core SDK versions target C# 7.0 by default.
C# 8.0 (and higher) is supported only on .NET Core 3.x and newer versions. Many of the newest features require library and runtime features introduced in .NET Core 3.x:
Defaults
The compiler determines a default based on these rules:
When your project targets a preview framework that has a corresponding preview language version, the language version used is the preview language version. You use the latest features with that preview in any environment, without affecting projects that target a released .NET Core version.
Override a default
If you must specify your C# version explicitly, you can do so in several ways:
Edit the project file
You can set the language version in your project file. For example, if you explicitly want access to preview features, add an element like this:
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The value
preview uses the latest available preview C# language version that your compiler supports.
Configure multiple projects
To configure multiple projects, you can create a Directory.Build.props file that contains the
<LangVersion> element. You typically do that in your solution directory. Add the following to a Directory.Build.props file in your solution directory:
Builds in all subdirectories of the directory containing that file will use the preview C# version. For more information, see the article on Customize your build.
C# language version reference
The following table shows all current C# language versions. Your compiler may not necessarily understand every value if it's older. If you install .NET Core 3.0 or later, then you have access to everything listed.
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Tip
Open the Developer Command Prompt for Visual Studio, and run the following command to see the listing of language versions available on your machine.
Questioning the -langversion compile option like this, will print something similar to the following:
Brew tap caskroom/versionsbrew cask info java11 ## For Java 11 LTS brew cask info java ## For Java 13 (latest version)Now, install the Java version of your choice using one of the below commands. Brew updatebrew tap caskroom/caskStep 3 – Install JAVA with Homebrew CaskAt the time of writing this tutorial the available version, Java 11 LTS and Java 13 latest for the installation. You can also install both versions if required.
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November 2020
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