NewGuids.ExpressionWelder 1.0.0

.NET Standard 2.1 This package targets .NET Standard 2.1. The package is compatible with this framework or higher. 
dotnet add package NewGuids.ExpressionWelder --version 1.0.0                

                    
                

            
NuGet\Install-Package NewGuids.ExpressionWelder -Version 1.0.0
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="NewGuids.ExpressionWelder" Version="1.0.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
paket add NewGuids.ExpressionWelder --version 1.0.0                

                    
                

            
#r "nuget: NewGuids.ExpressionWelder, 1.0.0"
#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 NewGuids.ExpressionWelder as a Cake Addin
#addin nuget:?package=NewGuids.ExpressionWelder&version=1.0.0

// Install NewGuids.ExpressionWelder as a Cake Tool
#tool nuget:?package=NewGuids.ExpressionWelder&version=1.0.0

Expression Welder

Why?

You need to build predicate expression trees by combining two dynamically generated expression trees, and you cannot pass an Expression<Func<T, bool>> to Any() or All().

What does this library do?

Provides two functions Joint and Weld.

  • Joint - takes a predicate expression tree and returns a predicate. This is primarily used by Weld to combine the expressions, however, the returned predicate will lazily compile, and invoke the original predicate expression tree.
  • Weld - takes a predicate expression and replaces any calls to Joint with the original expression.

Example

record Item(string Field);
record Doc(Item[] Items);

// you have some function that returns a predicate for your item
Expression<Func<Item, bool>> MakeItemPredicate(string value)
{
    return item => item.Field == value;
}

// this won't work
// Expression<Func<Doc, bool>> pred = x => x.Items.Any(MakeItemPredicate("foo"));

// but this will
var itemPredicate = MakeItemPredicate("foo");
Expression<Func<Doc, bool>> pred = Welder.Weld<Doc>(x => x.Items.Any(Welder.Joint(itemPredicate)));
Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  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 was computed.  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. 
.NET Core netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.1 is compatible. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen 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.

  • .NETStandard 2.1

    • No dependencies.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

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Version Downloads Last updated
1.0.0 131 7/1/2024