Prefer emptyList() / emptySet() / emptyMap() over zero-arg builders
Recipe ID
org.openrewrite.kotlin.stdlib.EmptyConstructorShorthands$KtRecipeArtifact
io.moderne.recipe:recipes-kotlinWhen listOf() / setOf() / mapOf() are called with no entries, replace them with the explicit emptyList() / emptySet() / emptyMap() factories so the empty-by-construction intent is visible at the call site.
Usage
This recipe has no required configuration options. You’ll need the Moderne CLI configured before running the command below.
mod run . --recipe org.openrewrite.kotlin.stdlib.EmptyConstructorShorthands$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.
- Use
emptyList<T>()instead oflistOf<T>()org.openrewrite.kotlin.stdlib.UseEmptyListForListOfNoArgs$KtRecipe - Use
emptySet<T>()instead ofsetOf<T>()org.openrewrite.kotlin.stdlib.UseEmptySetForSetOfNoArgs$KtRecipe - Use
emptyMap<K, V>()instead ofmapOf<K, V>()org.openrewrite.kotlin.stdlib.UseEmptyMapForMapOfNoArgs$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