Redundant spread operator

Reports the use of a redundant spread operator for a family of arrayOf function calls.

Use the 'Remove redundant spread operator' quick-fix to clean up the code.

Examples:

  fun foo(vararg s: String) { }

  fun bar(ss: Array<String>) {
      foo(*arrayOf("abc"))       // for the both calls of 'foo', array creation
      foo(*arrayOf(*ss, "zzz"))  // and its subsequent "spreading" is redundant
  }

After the quick-fix is applied:

  fun foo(vararg s: String) { }

  fun bar(ss: Array<String>) {
      foo("abc")
      foo(*ss, "zzz")
  }

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

RemoveRedundantSpreadOperator

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | Kotlin | Redundant constructs

Availability

By default bundled with: IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,
Can be installed with plugin: Kotlin, 241.18072-IJ

Last modified: 18 June 2024