JJ.Framework.Existence.Core 2.5.3080

Prefix Reserved
.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There is a newer version of this package available.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 JJ.Framework.Existence.Core --version 2.5.3080
                    


                    

                
NuGet\Install-Package JJ.Framework.Existence.Core -Version 2.5.3080
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="JJ.Framework.Existence.Core" Version="2.5.3080" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="JJ.Framework.Existence.Core" Version="2.5.3080" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="JJ.Framework.Existence.Core" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add JJ.Framework.Existence.Core --version 2.5.3080
                    


                    

                
#r "nuget: JJ.Framework.Existence.Core, 2.5.3080"
#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. 
#:package JJ.Framework.Existence.Core@2.5.3080
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=JJ.Framework.Existence.Core&version=2.5.3080
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=JJ.Framework.Existence.Core&version=2.5.3080
                    


                            Install as a Cake Tool

Existence.Core

Ever find yourself trying to decide on IsNullOrEmpty, IsNullOrWhiteSpace, a null check, empty list check or no check at all?

Well, no more. Now you just type Has(text) or Has(collection) and be done with it.

Background

"Nothing" isn’t one thing in .NET. It’s null, default, white space, 0, NaN, Empty, Length = 0, uninitialized structs, Nullable<T>.HasValue == false, etc. Things can get quite absurd, once you dive into how many ways nothingness can be expressed.

Features

Grab these methods instead of wrestling with repeated checks. Your code (and your brain) will thank you:

  • Has / FilledIn / IsNully

    • One step beyond null treating empty strings / white space / 0 / empty as nully.

  • Coalesce

    • Pick the first non-nully value (?? on steroids).

  • In / Contains

    • "Is this in that?" tests for collections and sets.

  • Is

    • Loose equality (case/trim-insensitive, etc.) when you don't care about exact matches.

Examples

list = list.Where(FilledIn);

if (number.IsNully()) return;

if (Has(name)) sb.Append($" {name} ");

Coalesce(" ", null, "Hi!") == "Hi!"

"\r\n GREEN\t  ".Is("Green")

"GREEN".In("Red", "Green","Blue") == true!

Future Features

More is coming to make things super flexible:

  • spaceMatters everywhere – because sometimes you really care if your string is just a single space.
  • zeroMatters – flip the switch so 0 isn't disregarded.
  • flex mode – force a full runtime type lookup on values when you're feeling adventurous.
  • char quirks – treat lone ' ' as nully by default (no more sneaky space bugs).
  • float drama – NaN, ∞, +0/–0 all count as empty.
  • enum safety net – invalid enum values get flagged as nully instead of blowing up.
  • all-null collections – if every item is null, the whole collection is officially empty.
  • ultra-loose Is – 10.Is("10") regardless of type, because how will we stay sane if 10 isn’t 10?

Mr. Koala

Once you think of koalas when you read 🐨 Coalesce, you can never unsee it. Mr. Koala eats your nullies. Nully nums are his favorites!

💬 Feedback

Found an issue? Let me know.

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 is compatible.  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 is compatible.  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.  net10.0 was computed.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-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 is compatible. 
.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
2.8.4205 274 7/21/2025
2.7.3304 69 7/5/2025
2.7.3301 87 7/5/2025
2.7.3296 133 7/3/2025
2.7.3283 151 7/3/2025
2.7.3272 174 7/2/2025
2.6.3184 140 6/24/2025
2.5.3081 158 6/14/2025
2.5.3080 244 6/14/2025