kotlin-stdlib / kotlin.text / substringBefore

substringBefore

Common
JVM
JS
Native
1.0
fun String.substringBefore(
    delimiter: Char,
    missingDelimiterValue: String = this
): String
(source)
fun String.substringBefore(
    delimiter: String,
    missingDelimiterValue: String = this
): String
(source)

Returns a substring before the first occurrence of delimiter. If the string does not contain the delimiter, returns missingDelimiterValue which defaults to the original string.