kotlin-stdlib/kotlin.text/commonPrefixWith

commonPrefixWith

fun CharSequence.commonPrefixWith(other: CharSequence, ignoreCase: Boolean = false): String
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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.

Samples

import samples.*
import java.util.Locale
import kotlin.test.*
fun main() { 
   //sampleStart 
   assertPrints("Hot_Coffee".commonPrefixWith("Hot_cocoa"), "Hot_")
assertPrints("Hot_Coffee".commonPrefixWith("Hot_cocoa", true), "Hot_Co")
assertPrints("Hot_Coffee".commonPrefixWith("Iced_Coffee"), "") 
   //sampleEnd
}

Parameters

ignoreCase

true to ignore character case when matching a character. By default false.