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Use LINQ CountBy()

Recipe IDOpenRewrite.Recipes.CSharp.Migration.Dotnet.Net9.UseLinqCountBy

ArtifactOpenRewrite.Recipes.CSharp.Migration.Dotnet

Replace collection.GroupBy(selector).Select(g => g.Count()) with collection.CountBy(selector). Available since .NET 9.

Single recipeOpenRewritemodernizationcsharpdotnetModerne Proprietary License

Try in PlatformTry this recipe in the Moderne platform. Not a user yet? You’ll get a no-setup demo environment, with nothing to install or configure.

Usage

Run this recipe

In order to run C# recipes, you will need to use the Moderne CLI.

Once the CLI is installed, you can install this C# recipe package by running the following command:

Install the recipe package

mod config recipes nuget install OpenRewrite.Recipes.CSharp.Migration.Dotnet

Then, you can run the recipe via:

Run the recipe

mod run . --recipe OpenRewrite.Recipes.CSharp.Migration.Dotnet.Net9.UseLinqCountBy