Author Topic: Microsoft Guard Class  (Read 2303 times)

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kdub_nz

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Microsoft Guard Class
« on: July 11, 2023, 07:37:42 PM »

Has anyone played with this ??

https://learn.microsoft.com/en-us/dotnet/communitytoolkit/diagnostics/guard

Quote
The CommunityToolkit.Diagnostics package contains APIs to efficiently validate method parameters and to throw exceptions in faulting code paths. It is meant to be used to help simplify all argument checks and to make them more expressive and easier to read, while at the same time improving codegen quality and performance.

This package can be installed through NuGet, and it has the following multi-targets:

.NET Standard 2.0
.NET Standard 2.1
.NET 6
This means the package can be used on any available runtime (including .NET Framework, .NET Core, UWP, Unity, Xamarin, Uno, Blazor, etc.).


Quote
The Guard can be used to validate method arguments in a streamlined manner, which is also faster, less verbose, more expressive and less error prone than manually writing checks and throwing exceptions.

>>>> . .

Code - C#: [Select]
  1. public static void SampleMethod(int[] array, int index, Span<int> span, string text)
  2. {
  3.     Guard.IsNotNull(array);
  4.     Guard.HasSizeGreaterThanOrEqualTo(array, 10);
  5.     Guard.IsInRangeFor(index, array);
  6.     Guard.HasSizeLessThanOrEqualTo(array, span);
  7.     Guard.IsNotNullOrEmpty(text);
  8. }
  9.  


Prior to C#10 the syntax is :

Code - C#: [Select]
  1. Guard.IsNotNull(array, nameof(array)))).
  2. //instead of :
  3. Guard.IsNotNull(array);
  4.  

It's basically a ready built specific assert API with a supporting 'ThrowHelper' class
I haven't had a play yet.
Looks interesting, to my mind.
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kdub_nz

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Re: Microsoft Guard Class
« Reply #1 on: July 11, 2023, 10:51:50 PM »

Fluent Assertions also looks attractive.
Recommended by Scott McFarlane ( Being a Remarkable C# .NET AutoCAD Developer SD12077 )

https://fluentassertions.com/introduction

https://fluentassertions.com/basicassertions/

https://github.com/fluentassertions/fluentassertions

https://www.nuget.org/packages/FluentAssertions/6.11.0?_src=template
or through NuGet Packages in Visual Studio

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kdub_nz

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Re: Microsoft Guard Class
« Reply #2 on: July 11, 2023, 11:04:56 PM »
Nice and clean

Added packages.config :
Code - XML: [Select]
  1. <packages>
  2.   <package id="FluentAssertions" version="6.11.0" targetFramework="net48" />
  3.   <package id="System.Runtime.CompilerServices.Unsafe" version="4.5.0" targetFramework="net48" />
  4.   <package id="System.Threading.Tasks.Extensions" version="4.5.0" targetFramework="net48" />
  5. </packages>
  6.  
« Last Edit: July 11, 2023, 11:26:14 PM by kdub_nz »
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kdub_nz

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Re: Microsoft Guard Class
« Reply #3 on: July 11, 2023, 11:55:32 PM »

and a test of Guard Class from MS

Code - XML: [Select]
  1. <packages>
  2.   <package id="CommunityToolkit.Diagnostics" version="8.2.1" targetFramework="net48" />
  3.   <package id="System.Buffers" version="4.5.1" targetFramework="net48" />
  4.   <package id="System.Memory" version="4.5.5" targetFramework="net48" />
  5.   <package id="System.Numerics.Vectors" version="4.5.0" targetFramework="net48" />
  6.   <package id="System.Runtime.CompilerServices.Unsafe" version="6.0.0" targetFramework="net48" />
  7.   <package id="System.Threading.Tasks.Extensions" version="4.5.4" targetFramework="net48" />
  8. </packages>
  9.  

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kdub_nz

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Re: Microsoft Guard Class
« Reply #4 on: July 12, 2023, 01:24:26 AM »
Some days are Diamonds :)

beer o'clock


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It's Alive!

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Re: Microsoft Guard Class
« Reply #5 on: July 12, 2023, 08:27:39 AM »
Iím still on the fence about exceptions vs something like std::expected
Wonder if .net has something similar

57gmc

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Re: Microsoft Guard Class
« Reply #6 on: July 12, 2023, 11:14:29 AM »
Has anyone played with this ??

Interesting...looks like I should.

Jeff H

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Re: Microsoft Guard Class
« Reply #7 on: July 12, 2023, 03:17:59 PM »
Cool stuff