IT Engineers manage organizations’ computer systems, including software, hardware and networks. They may be responsible for designing, installing, and supporting the entire system or may specialize in one area of the computer system, such as security infrastructure or telecommunications.

IT Engineer Duties and Responsibilities

The type of organization and the type of computer system an IT Engineer works with will determine their particular responsibilities; however, there are several main duties all IT Engineers perform. A review of current job listings identified the following primary tasks and responsibilities.

Identify and Resolve System Issues

IT Engineers are responsible for studying their employer’s current computer system, identifying areas that need improvements or overhauls and implementing these changes. They will need to be skilled in assessment techniques and have the ability to design and install any necessary upgrades to the system.

Develop Systems

Many IT Engineers are hired to create an IT or computer system specific to their employer’s needs. This often entails some programming and scripting knowledge, as well as planning, configuring, testing and monitoring new systems.

Document Work

Documenting work is a very important part of the IT Engineer’s job. They must document system configurations, updates they make to a system and any new procedures or policies created in their work. Their documentation is used by other IT staff or management to see what changes or creations have been made to their systems.

Manage Projects

IT Engineers are often called upon to act as a project manager. They often oversee IT staff and coordinate with vendors and internal users when implementing a new system. They may be required to setup meetings, present information and order supplies and equipment when working on a project.

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Starting with Visual Studio 2019 Preview 4, we’ll be adjusting how C# versions are treated in .NET tooling.

Summary of changes

Firstly, we’re adding two new Language Version (LangVersion) values: LatestMajor and Preview. Here’s how they stack up with the currently supported list of values:


LangVersion

Meaning


LatestMajor Latest supported major C# language version
Preview Latest available preview C# language version
Latest Latest supported C# language version (including minor version)
ISO-1 C# 1.0/1.2
ISO-2 C# 2.0
3 C# 3.0
4 C# 4.0
5 C# 5.0
6 C# 6.0
7 C# 7.0
7.1 C# 7.1
7.2 C# 7.2
7.3 C# 7.3
8.0 C# 8.0



When no LangVersion is specified, the default meaning is now determined by the target framework of your project. When you target a preview framework that also has a corresponding preview C# version, that preview version is the default. If you do not target a preview framework, then Latest is chosen.

Experience when C# 8.0 is in preview

The following scenarios explain how the default C# version will be interpreted while C# 8.0 is still in preview.

Targeting netcoreapp3.0 preview or netstandard2.1 preview

The default language version chosen in this scenario is Preview. The C# 8.0 features you have access to are based entirely on the version of the compiler (and thus the .NET SDK) that you are using. As you use future previews, you may get more (or slightly tweaked) features. When you build a project, the .NET SDK will emit a warning that this is all still in preview.

Targeting .NET Framework

The default language version chosen in this scenario is Latest. Any use of a C# 8.0 feature is a compile error. Visual Studio tooling will prompt you with a quick fix that can change the language version for the project or solution when one of these errors is encountered. Because some features require underlying types or runtime features that are not available on .NET Framework, such as Default Interface Members, you may still get an error for those features when targeting .NET Framework.

Multi-targeting netcoreapp3.0 preview or netstandard2.1 preview and .NET Framework

For the netcoreapp3.0/netstandard2.1 preview targets, the language version is Preview. A warning is emitted on build from the .NET SDK. For the .NET Framework target, the language version is Latest.

Explicit LangVersion is used

If you explicitly set a LangVersion value, that will be respected and the previously mentioned default behavior is ignored.

Experience when C# 8.0 and .NET Core 3.0 are GA

Eventually, C# 8.0 and .NET Core 3.0 will ship in a GA-quality release. Here’s what the relevant LangVersion values will map to at that time:


LangVersion

Meaning


Latest 8.0
LatestMajor 8.0
Preview Not yet determined



Projects that do not specify a LangVersion will be treated as if they are Latest when C# 8.0 is GA.

If you created a project for C# 8.0 preview targeting .NET Core 3.0 preview or .NET Standard 2.1 preview, and also did not specify a LangVersion, it will be as if Latest is chosen. You will not be opted into Preview under any scenario once C# 8.0 and .NET Core 3.0 are GA.

At the time of writing, there is no plan for a preview of C# when C# 8.0 is GA. Eventually, a preview will ship and we’ll have a blog post explaining it.

Rationale

Up until this point, the default C# version used in Visual Studio was equivalent to LatestMajor. This has been problematic for two reasons:
1.C# now evolves between Visual Studio release cycles, but new projects in Visual Studio would still default to an older version of C#.
2.C# 8.0 preview is a better choice for projects that target .NET Core 3.0 preview, but there was no way to make it a default without also making it the default for projects that weren’t targeting .NET Core 3.0 preview.

More generally, as we evolve C# and continue to release more features that align with a future .NET Core version, we want to make sure that you can use these features as seamlessly as possible. This also allows you to use features earlier in their development lifecycle, increasing the window of time that actionable feedback on a feature could influence its design.

Support and compatibility for preview features

The way to think about support is also a bit different. To allow the use of C# 8.0 preview features within a released Visual Studio 2019, support and compatibility concerns are distinguished by preview vs. released features:
•Any C# 7.3 and lower feature or behavior is fully supported and fully compatible. No change from what currently exists today.
•Any C# 8.0 preview feature is unsupported.
•There is no compatibility guarantee from one C# 8.0 preview to another.

In short, if you use C# 8.0 preview in Visual Studio 2019, some features and behavior may change between now and when C# 8.0 fully releases.

Happy hacking!