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79 lines
3.1 KiB
Markdown
79 lines
3.1 KiB
Markdown
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**What's New in the 7th Edition**
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There are hundreds of minor fixes and improvements throughout the 7th edition; too many to list individually. All errata and improvements listed [here](https://github.com/markjprice/cs10dotnet6/blob/main/docs/errata/README.md) have been made to the 7th edition.
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The main new sections in C# 11 and .NET 7, 7th edition compared to C# 10 and .NET 6 6th edition are shown below.
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# Chapter 1
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- Understanding .NET support: explains that *Current* support is now renamed *Standard Term Support (STS)*.
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# Chapter 2
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- Raw string literals and Raw interpolated string literals: new C# 11 features.
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# Chapter 3
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- Storing multiple values in an array: not a new feature but previous editions didn't really cover arrays.
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- List pattern matching with arrays: a new C# 11 feature.
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# Chapter 4
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- Understanding top-level programs and functions: I explain in detail how top-level programs work with separate files for `partial Program` class since I use that technique throughout the book.
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- Most of the function examples have been improved based on reader feedback, for example, going beyond supported ranges to see when exceptions and overflows occur.
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- A brief aside about the correct usage of the terms *arguments* and *parameters*.
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- Hot reloading during development.
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- Logging information about your source code.
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# Chapter 5
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- Avoiding a namespace conflict with a using alias, and Renaming a type with a using alias. Not new but useful for readers to know.
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- Requiring properties to be set during instantiation: the new C# 11 `required` keyword.
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# Chapter 6
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- Checking for `null` in method parameters: explains the story behind `!!` in C# 11.
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- Treating warnings as errors: added for good practice.
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- Understanding warning waves.
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# Chapter 7
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- Viewing source links with Visual Studio 2022: explain differences between viewing source links and decompiling, with `Enumerable.Count` method as an example which then helps to understand later why `Count()` can be inefficient.
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# Chapter 8
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- Activating regular expression syntax coloring: the new `[StringSyntax]` attribute introduced in .NET 7.
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- Improving regular expression performance with source generators.
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# Chapter 9
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- Working with Tar archives. New in .NET 7.
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# Chapter 10
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- Customizing the reverse engineering templates: I just mention that this is possible because it's interesting but too advanced for this book.
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- More efficient updates and deletes. Uses new methods in EF Core 7.
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# Chapter 11
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- Sorting by the item itself. Uses new methods in .NET 7.
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- Be careful with Count! A section about the `Count()` method implementation and how it can be tricky to work with efficiently.
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- Paging with LINQ. A new section for the book but not a new LINQ feature. Just helpful to cover before getting into web development.
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# Chapter 13
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- Enabling request decompression support.
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- Enabling HTTP/3 support.
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# Chapter 14
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- Using output caching. Output caching was added in ASP.NET Core 7.
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# Chapter 15
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- Support for logging additional request headers in W3CLogger.
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- Enabling HTTP/3 support for HttpClient.
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# Chapter 16
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- Enabling location change event handling.
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