Find collection construction inside loops
Recipe ID
org.openrewrite.kotlin.performance.FindLoopAllocations$KtRecipeArtifact
io.moderne.recipe:recipes-kotlinFlags listOf / mutableListOf / mutableMapOf calls that allocate a fresh collection on every loop iteration. Hoist constants or clear()-and-reuse a single instance.
Usage
This recipe has no required configuration options. You’ll need the Moderne CLI configured before running the command below.
mod run . --recipe org.openrewrite.kotlin.performance.FindLoopAllocations$KtRecipeIf the recipe isn’t available locally, install it with:
mod config recipes jar install io.moderne.recipe:recipes-kotlin:0.2.0Definition
This recipe runs the following recipes in order.
- Find
listOf(...)calls inside loopsorg.openrewrite.kotlin.performance.FindListOfInLoops$KtRecipe - Find
mutableListOf<T>()allocations inside loopsorg.openrewrite.kotlin.performance.FindMutableListOfInLoops$KtRecipe - Find
mutableMapOf<K, V>()allocations inside loopsorg.openrewrite.kotlin.performance.FindMutableMapOfInLoops$KtRecipe
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