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**Previews** # Previews
Preliminary drafts of C# 11 and .NET 7 - Modern Cross-Platform Development were written and tested with .NET 7 Preview 1. Microsoft will release monthly previews until August, then two release candidates in September and October, before the general availablility (GA) release in November 2022. Each month I will add new content to this page that will then be added to the final drafts in September. Preliminary drafts of *C# 11 and .NET 7 - Modern Cross-Platform Development* were written and tested with **.NET 7 Preview 1**. Microsoft will release monthly previews until August, then two release candidates in September and October, before the general availablility (GA) release in November 2022. Each month I will add new content to this page that will then be added to the final drafts in September.
- [New content for .NET 7 Preview 2](#new-content-for-net-7-preview-2) - [Previews](#previews)
- [Chapter 1](#chapter-1) - [Chapter 1 - Hello, C#! Welcome, .NET!](#chapter-1---hello-c-welcome-net)
- [Command Line Interface commands](#command-line-interface-commands) - [Command Line Interface commands](#command-line-interface-commands)
- [Line breaks in interpolated strings](#line-breaks-in-interpolated-strings) - [Line breaks in interpolated strings](#line-breaks-in-interpolated-strings)
- [Chapter 5](#chapter-5) - [Chapter 5 - Building Your Own Types with Object-Oriented Programming](#chapter-5---building-your-own-types-with-object-oriented-programming)
- [List pattern matching](#list-pattern-matching) - [List pattern matching](#list-pattern-matching)
- [Chapter 8](#chapter-8) - [Chapter 8 - Working with Common .NET Types](#chapter-8---working-with-common-net-types)
- [Regular Expressions](#regular-expressions) - [More efficient regular expressions](#more-efficient-regular-expressions)
- [New content for .NET 7 Preview 3 (April)](#new-content-for-net-7-preview-3-april)
- [New content for .NET 7 Preview 4 (May)](#new-content-for-net-7-preview-4-may)
- [New content for .NET 7 Preview 5 (June)](#new-content-for-net-7-preview-5-june)
- [New content for .NET 7 Preview 6 (July)](#new-content-for-net-7-preview-6-july)
- [New content for .NET 7 Preview 7 (August)](#new-content-for-net-7-preview-7-august)
- [New content for .NET 7 Release Candidate 1 (September)](#new-content-for-net-7-release-candidate-1-september)
# New content for .NET 7 Preview 2 # Chapter 1 - Hello, C#! Welcome, .NET!
## Chapter 1 ## Command Line Interface commands
### Command Line Interface commands
In .NET 7 Preview 2 and later, `dotnet` commands do not need to be prefixed with hyphens. In .NET 7 Preview 2 and later, `dotnet` commands do not need to be prefixed with hyphens.
@ -37,9 +29,9 @@ After:
dotnet new list dotnet new list
``` ```
> Since I want to ensure that .NET 6 developers can follow the examples in the book, and Microsoft will support the use of hyphenated commands for a while, the book will continue to use the hyphenated commands but with a note that they are optional in .NET 7 and later. > **Note:** Since I want to ensure that .NET 6 developers can follow the examples in the book, and Microsoft will support the use of hyphenated commands for a while, the book will continue to use the hyphenated commands but with a note that they are optional in .NET 7 and later.
### Line breaks in interpolated strings ## Line breaks in interpolated strings
One of my favorite new language features because it helps with printed code! One of my favorite new language features because it helps with printed code!
@ -56,13 +48,15 @@ string message2 =
With C# 11, the above will compile. Finally! With C# 11, the above will compile. Finally!
## Chapter 5 # Chapter 5 - Building Your Own Types with Object-Oriented Programming
### List pattern matching ## List pattern matching
## Chapter 8
### Regular Expressions
# Chapter 8 - Working with Common .NET Types
## More efficient regular expressions
In .NET 7 Preview 2 and later, you can use a more efficient Regex source generator. In .NET 7 Preview 2 and later, you can use a more efficient Regex source generator.
@ -96,15 +90,3 @@ public partial class Foo // <-- Make the class a partial class
} }
} }
``` ```
# New content for .NET 7 Preview 3 (April)
# New content for .NET 7 Preview 4 (May)
# New content for .NET 7 Preview 5 (June)
# New content for .NET 7 Preview 6 (July)
# New content for .NET 7 Preview 7 (August)
# New content for .NET 7 Release Candidate 1 (September)