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Build a game this November!

Game Off

Game Off is our annual month-long game jam where participants create games using their favorite game engines, libraries, and programming languages. Newbies, professional game developers, and everyone in between are welcome to join. It’s a great excuse to learn a new technology, collaborate on something over the weekends with friends, or create a game by yourself for the first time! Join now!

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Objective-C is general purpose, object-oriented programming language used for macOS and iOS operating systems.
GitHub Universe 2021

Upcoming event recommended by GitHub

Oct
27

GitHub Universe 2021

October 27, 2021 - October 28, 2021 • Virtual

GitHub Universe 2021 brings you a few ways to engage this year as we explore DevOps, Security, Developer Productivity, and Open Source Communities.

App recommended by GitHub

Mergify

Mergify is a pull request automation service, triggering actions when a pull request matches defined criteria. 🤖

For example, in a few lines of YAML, you can write a rule that automatically merges a pull request if:

  • [x] it has been approved
  • [x] the test suite passes

Take a look at our examples.

Mergify executes actions for you, freeing you from the burden of managing your pull requests. 🦾

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t-bzhan
t-bzhan commented Sep 10, 2020

We get NullReferenceException when running dotnet new related commands in Ubuntu, the error message is like:

dotnet -d new console
Telemetry is: Enabled
System.NullReferenceException: Object reference not set to an instance of an object.
at Microsoft.DotNet.Cli.Utils.Muxer..ctor()
at Microsoft.DotNet.Tools.New.NewCommandShim.CreateHost()
at Microsoft.DotNet.Tools.New.

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