Why doesnt look ahead and look behind Regex work in Kotlin?

Question

Example:

    // Java
    System.out.println("one;two;th/;ree".split("(?<!/);").length);  // 3

    // Kotlin
    println("one;two;th/;ree".split("(?<!/);").size) // 1

How to correct this?

Answer 1

In your Kotlin example you're not splitting by a Regex but by a String.

Try the following:

println("one;two;th/;ree".split(Regex("(?<!/);")).size) // 3