commonPrefixWith
Returns the longest string prefix such that this char sequence and other char sequence both start with this prefix, taking care not to split surrogate pairs. If this and other have no common prefix, returns the empty string.
fun CharSequence.commonPrefixWith(other: CharSequence, ignoreCase: Boolean = false): String(source)
fun main() {
val a = "Kotlin"
val b = "Kotlinic"
val c = "kotlin"
// Regular comparison
println(a.commonPrefixWith(b)) // Output: "Kotlin"
// Case-insensitive comparison
println(a.commonPrefixWith(c, ignoreCase = true)) // Output: "kotlin"
// No common prefix (case-sensitive)
println(a.commonPrefixWith(c)) // Output: ""
}