Manually incremented index variable can be replaced with use of 'withIndex()'

Reports for loops with a manually incremented index variable.

for loops with a manually incremented index variable can be simplified with the withIndex() function.

Use withIndex() instead of manual index increment quick-fix can be used to amend the code automatically.

Example:

fun foo(list: List<String>): Int? {
    var index = 0
    for (s in list) { <== can be simplified
        val x = s.length * index
        index++
        if (x > 0) return x
    }
    return null
}

After the quick-fix is applied:

fun foo(list: List<String>): Int? {
    for ((index, s) in list.withIndex()) {
        val x = s.length * index
        if (x > 0) return x
    }
    return null
}

Inspection Details
Available in:	IntelliJ IDEA 2023.3, Qodana for JVM 2023.3
Plugin:	Kotlin, @snapshot@

Last modified: 13 July 2023