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'substring' call should be replaced with 'substringBefore'

Reports calls like s.substring(0, s.indexOf(x)) that can be replaced with s.substringBefore(x).

Using substringBefore() makes your code simpler.

The quick-fix replaces the substring call with substringBefore.


fun foo(s: String) { s.substring(0, s.indexOf('x')) }

After the quick-fix is applied:

fun foo(s: String) { s.substringBefore('x') }

Inspection Details

Available in:

IntelliJ IDEA 2023.3, Qodana for JVM 2023.3


Kotlin, @snapshot@

Last modified: 13 July 2023