Function should have 'operator' modifier

Reports a function that matches one of the operator conventions but lacks the operator keyword.

By adding the operator modifier, you might allow function consumers to write idiomatic Kotlin code.

Example:

class Complex(val real: Double, val imaginary: Double) {
    fun plus(other: Complex) =
        Complex(real + other.real, imaginary + other.imaginary)
}

fun usage(a: Complex, b: Complex) {
    a.plus(b)
}

The quick-fix adds the operator modifier keyword:

class Complex(val real: Double, val imaginary: Double) {
    operator fun plus(other: Complex) =
        Complex(real + other.real, imaginary + other.imaginary)
}

fun usage(a: Complex, b: Complex) {
    a + b
}

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

Last modified: 13 July 2023