Existential.Net 3.0.0

.NET 6.0 This package targets .NET 6.0. The package is compatible with this framework or higher. .NET Standard 2.0 This package targets .NET Standard 2.0. The package is compatible with this framework or higher.
There is a newer version of this package available.
See the version list below for details. 
dotnet add package Existential.Net --version 3.0.0                

                    
                

            
NuGet\Install-Package Existential.Net -Version 3.0.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Existential.Net" Version="3.0.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
paket add Existential.Net --version 3.0.0                

                    
                

            
#r "nuget: Existential.Net, 3.0.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
// Install Existential.Net as a Cake Addin
#addin nuget:?package=Existential.Net&version=3.0.0

// Install Existential.Net as a Cake Tool
#tool nuget:?package=Existential.Net&version=3.0.0

About Existential.NET

Existential is a utility library that contains parameter validation methods, a Maybe monad, and more. Full documentation can be found at existential.ggreig.com.

Azure DevOps builds (branch) Azure DevOps coverage Libraries.io dependency status for latest release SonarCloud quality gate Azure DevOps releases

Documentation site Nuget Libraries.io SourceRank

It can be used to:

It reduces the code you need to write for basic null checks by providing validation techniques or - even better - using the Maybe<T> monad can just help you not to care!

Other classes in Existential help you to avoid constantly reinventing the wheel for common problems such as converting an IEnumerable to an IEnumerable<T>, getting the name of the current method or negating a Predicate.

These solutions aren't innovative in themselves - plenty code examples exist out there - but Existential brings them together into one tested library so you don't have to.

To get started:

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 is compatible.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 is compatible.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 was computed.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
3.1.1 2,061 12/21/2023
3.1.0 136 12/21/2023
3.0.0 303 3/24/2023
2.0.0 1,468 4/21/2022
1.4.0 469 4/5/2022
1.3.1 396 11/12/2021
1.3.0 452 10/8/2021
1.2.1 2,553 3/15/2021
1.2.0 370 3/14/2021
1.1.0 548 11/29/2020
1.0.0 4,602 10/26/2020
0.0.0-alpha.0.230 302 10/23/2020
0.0.0-alpha.0.229 212 10/22/2020
0.0.0-alpha.0.219 284 10/14/2020
0.0.0-alpha.0.184 231 10/12/2020

In this version (3.0.0):
========================
Breaking changes:
* Removed support for .Net Framework 4.6.1. Consider upgrading to 4.6.2 or later.
* Removed support for .Net Core 3.1. Consider upgrading to .Net 6.0 or later.
* Removed support for .Net 5.0. Consider upgrading to .Net 6.0 or later.

New features:
* Added support for .Net 7.0
* Added extension method for Maybe<T>:
 * ToNullable<T>(this Maybe<T>)
* Added extension method for IEnumerable<T>:
 * ToCollectionOfMaybe<T>(this IEnumerable<T>T)
* Added extension method for IEnumerable<Maybe<T>>:
 * ToCollectionOfNullable<T>(this IEnumerable>Maybe<T>>)
* Added extension methods for Exception to support logging in exception filters:
 * ShouldBeUnhandledLog(this Exception, Action<ILogger, Exception>, ILogger, TextWriter? inFallbackWriter = null)
 * ShouldBeHandledLog(this Exception, Action<ILogger, Exception>, ILogger, TextWriter? inFallbackWriter = null)
 * ShouldBeUnhandledLog(this Exception, Action<ILogger, T1, Exception>, ILogger, T1, TextWriter? inFallbackWriter = null)
 * ShouldBeHandledLog(this Exception, Action<ILogger, T1, Exception>, ILogger, T1, TextWriter? inFallbackWriter = null)
 * ShouldBeUnhandledLog(this Exception, Action<ILogger, T1, T2, Exception>, ILogger, T1, T2, TextWriter? inFallbackWriter = null)
 * ShouldBeHandledLog(this Exception, Action<ILogger, T1, T2, Exception>, ILogger, T1, T2, TextWriter? inFallbackWriter = null)
 * ShouldBeUnhandledLog(this Exception, Action<ILogger, T1, T2, T3, Exception>, ILogger, T1, T2, T3, TextWriter? inFallbackWriter = null)
 * ShouldBeHandledLog(this Exception, Action<ILogger, T1, T2, T3, Exception>, ILogger, T1, T2, T3, TextWriter? inFallbackWriter = null)
 * ShouldBeUnhandledLog(this Exception, Action<ILogger, T1, T2, T3, T4, Exception>, ILogger, T1, T2, T3, T4, TextWriter? inFallbackWriter = null)
 * ShouldBeHandledLog(this Exception, Action<ILogger, T1, T2, T3, T4, Exception>, ILogger, T1, T2, T3, T4, TextWriter? inFallbackWriter = null)
 * ShouldBeUnhandledLog(this Exception, Action<ILogger, T1, T2, T3, T4, T5, Exception>, ILogger, T1, T2, T3, T4, T5, TextWriter? inFallbackWriter = null)
 * ShouldBeHandledLog(this Exception, Action<ILogger, T1, T2, T3, T4, T5, Exception>, ILogger, T1, T2, T3, T4, T5, TextWriter? inFallbackWriter = null)
 * ShouldBeUnhandledLog(this Exception, Action<ILogger, T1, T2, T3, T4, T5, T6, Exception>, ILogger, T1, T2, T3, T4, T5, T6, TextWriter? inFallbackWriter = null)
 * ShouldBeHandledLog(this Exception, Action<ILogger, T1, T2, T3, T4, T5, T6, Exception>, ILogger, T1, T2, T3, T4, T5, T6, TextWriter? inFallbackWriter = null)
* Added extension methods for ILogger to support logging in exception filters:
 * LogsThenRethrow(this ILogger, Exception, Action<ILogger, Exception>, TextWriter? inFallbackWriter = null)
 * LogsThenHandle(this ILogger, Exception, Action<ILogger, Exception>, TextWriter? inFallbackWriter = null)
 * LogsThenRethrow(this ILogger, Exception, Action<ILogger, T1, Exception>, T1, TextWriter? inFallbackWriter = null)
 * LogsThenHandle(this ILogger, Exception, Action<ILogger, T1, Exception>, T1, TextWriter? inFallbackWriter = null)
 * LogsThenRethrow(this ILogger, Exception, Action<ILogger, T1, T2, Exception>, T1, T2, TextWriter? inFallbackWriter = null)
 * LogsThenHandle(this ILogger, Exception, Action<ILogger, T1, T2, Exception>, T1, T2, TextWriter? inFallbackWriter = null)
 * LogsThenRethrow(this ILogger, Exception, Action<ILogger, T1, T2, T3, Exception>, T1, T2, T3, TextWriter? inFallbackWriter = null)
 * LogsThenHandle(this ILogger, Exception, Action<ILogger, T1, T2, T3, Exception>, T1, T2, T3, TextWriter? inFallbackWriter = null)
 * LogsThenRethrow(this ILogger, Exception, Action<ILogger, T1, T2, T3, T4, Exception>, T1, T2, T3, T4, TextWriter? inFallbackWriter = null)
 * LogsThenHandle(this ILogger, Exception, Action<ILogger, T1, T2, T3, T4, Exception>, T1, T2, T3, T4, TextWriter? inFallbackWriter = null)
 * LogsThenRethrow(this ILogger, Exception, Action<ILogger, T1, T2, T3, T4, T5, Exception>, T1, T2, T3, T4, T5, TextWriter? inFallbackWriter = null)
 * LogsThenHandle(this ILogger, Exception, Action<ILogger, T1, T2, T3, T4, T5, Exception>, T1, T2, T3, T4, T5, TextWriter? inFallbackWriter = null)
 * LogsThenRethrow(this ILogger, Exception, Action<ILogger, T1, T2, T3, T4, T5, T6, Exception>, T1, T2, T3, T4, T5, T6, TextWriter? inFallbackWriter = null)
 * LogsThenHandle(this ILogger, Exception, Action<ILogger, T1, T2, T3, T4, T5, T6, Exception>, T1, T2, T3, T4, T5, T6, TextWriter? inFallbackWriter = null)

Bug fixes:
 * For an empty Maybe<T>, where T was a value type, the method TryGetValue(out T)
would incorrectly return true and populate the out value with default(T).

Fuller history of changes at https://existential.ggreig.com/articles/version_history.html