Useless call on not-null type
Reports calls on not-null receiver that make sense only for nullable receiver.
Several functions from the standard library such as orEmpty() or isNullOrEmpty have sense only when they are called on receivers of nullable types. Otherwise, they can be omitted or simplified as the result will be the same.
Remove redundant call and Change call to … quick-fixes can be used to amend the code automatically.
Examples:
fun test(s: String) {
val x = s.orEmpty() // quick-fix simplifies to 's'
val y = s.isNullOrEmpty() // quick-fix simplifies to 's.isEmpty()'
}
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.
UselessCallOnNotNull- 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.
Availability
- By default bundled with
- Can be installed with plugin
Kotlin, 241.18072-IJ
Last modified: 18 June 2024