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Moderne licensed

Prefer Vector or prepend for append-heavy workloads

Recipe IDorg.openrewrite.scala.performance.PreferVectorOrPrependArtifactio.moderne.recipe:recipes-scala

Finds usage of the :+ operator to append to a List, which is O(n). Prefer Vector for append-heavy workloads or prepend with :: instead.

Single recipeProprietary

Usage

This recipe has no required configuration options. You’ll need the Moderne CLI configured before running the command below.

mod run . --recipe org.openrewrite.scala.performance.PreferVectorOrPrepend

If the recipe isn’t available locally, install it with:

mod config recipes jar install io.moderne.recipe:recipes-scala:RELEASE

Data tables

Structured output this recipe can produce.

  • Source files that had resultsSource files that were modified by the recipe run.org.openrewrite.table.SourcesFileResults
  • Source files that had search resultsSearch results that were found during the recipe run.org.openrewrite.table.SearchResults
  • Source files that errored on a recipeThe details of all errors produced by a recipe run.org.openrewrite.table.SourcesFileErrors
  • Recipe performanceStatistics used in analyzing the performance of recipes.org.openrewrite.table.RecipeRunStats