From bdcaca412070ba9dd1a9ba8599855008f3609f99 Mon Sep 17 00:00:00 2001 From: Mark J Price Date: Fri, 3 Feb 2023 09:51:47 +0000 Subject: [PATCH] Add items for pages 258 and 277 --- docs/errata/README.md | 2 +- docs/errata/errata.md | 31 ++++++++++++++++++++++++++++++- 2 files changed, 31 insertions(+), 2 deletions(-) diff --git a/docs/errata/README.md b/docs/errata/README.md index d21b5dd..5872916 100644 --- a/docs/errata/README.md +++ b/docs/errata/README.md @@ -2,7 +2,7 @@ If you find any mistakes in the seventh edition, *C# 11 and .NET 7 - Modern Cross-Platform Development Fundamentals*, or if you have suggestions for improvements, then please [raise an issue in this repository](https://github.com/markjprice/cs11dotnet7/issues) or email me at markjprice (at) gmail.com. -[**Errata** (23 items)](errata.md): Typos, tool user interface changes, or mistakes in code that would cause a compilation error that prevents a successful build. +[**Errata** (25 items)](errata.md): Typos, tool user interface changes, or mistakes in code that would cause a compilation error that prevents a successful build. [**Improvements** (4 items)](improvements.md): Changes to text or code that would improve the content. These are optional. diff --git a/docs/errata/errata.md b/docs/errata/errata.md index 8f9dffb..5418618 100644 --- a/docs/errata/errata.md +++ b/docs/errata/errata.md @@ -1,4 +1,4 @@ -**Errata** (23 items) +**Errata** (25 items) If you find any mistakes, then please [raise an issue in this repository](https://github.com/markjprice/cs11dotnet7/issues) or email me at markjprice (at) gmail.com. @@ -16,8 +16,10 @@ If you find any mistakes, then please [raise an issue in this repository](https: - [Page 185 - Creating a class library that needs testing](#page-185---creating-a-class-library-that-needs-testing) - [Page 188 - Running unit tests using Visual Studio Code](#page-188---running-unit-tests-using-visual-studio-code) - [Page 244 - Init-only properties](#page-244---init-only-properties) +- [Page 258 - Defining and handling events](#page-258---defining-and-handling-events) - [Page 272 - Defining struct types](#page-272---defining-struct-types) - [Page 275 - Releasing unmanaged resources](#page-275---releasing-unmanaged-resources) +- [Page 277 - Making a value type nullable](#page-277---making-a-value-type-nullable) - [Page 322 - Revealing the location of a type](#page-322---revealing-the-location-of-a-type) - [Page 330 - Publishing a self-contained app, Page 354 - Exercise 7.3 – Explore PowerShell](#page-330---publishing-a-self-contained-app-page-354---exercise-73--explore-powershell) - [Page 412 - Compressing streams](#page-412---compressing-streams) @@ -165,6 +167,19 @@ In Step 1, the project name `CalculatorLibUnitTest` should be `CalculatorLibUnit In Step 1, I say to add a new file named `Records.cs` to the `PacktLibraryNetStandard2` project/folder. I should have said to the `PacktLibraryModern` project/folder. +# Page 258 - Defining and handling events + +> Thanks to [Ricky](https://github.com/r1c5) for raising this [issue on 2 February 2023](https://github.com/markjprice/cs11dotnet7/issues/23). + +In Step 5, the statement that outputs the "Stop it!" message uses the `$` string interpolation prefix character unnecessarily, as shown in the following code: +```cs +WriteLine($"Stop it!"); +``` +The `$` can be removed, as shown in the following code: +```cs +WriteLine("Stop it!"); +``` + # Page 272 - Defining struct types > Thanks to [Ali Koleiny Zadeh](https://github.com/alikzalikz) for raising this [issue on 15 January 2023](https://github.com/markjprice/cs11dotnet7/issues/18). @@ -179,6 +194,20 @@ In the second bullet point after the large code block, I wrote, "It needs to che It might be clearer if I wrote, "It needs to check the `disposing` parameter and `disposed` field because if the finalizer thread has already run and it called the `~ObjectWithUnmanagedResources` method, then unmanaged resources will already have been deallocated and only managed resources remain to be deallocated by the garbage collector." I will do this in the next edition. +# Page 277 - Making a value type nullable + +> Thanks to [Ricky](https://github.com/r1c5) for raising this [issue on 2 February 2023](https://github.com/markjprice/cs11dotnet7/issues/24). + +In Step 6, the output should be formatted with a black background like other command-line blocks, and the output is missing the writing of the variable named `thisCannotBeNull`. The output should be: +``` +4 + +0 +7 +7 +``` +Step 7 should therefore say, "The **second** line is blank because it is outputting the null value!", and it should not be formatted as a numbered step because it is a not an instruction to the reader, it is a note. + # Page 322 - Revealing the location of a type > Thanks to Bob Molloy for raising this issue via email.