replaceFirst

Common

Replaces the first occurrence of the given regular expression regex in this char sequence with specified replacement expression.

Parameters

replacement

A replacement expression that can include substitutions. See Regex.replaceFirst for details.

fun String.replaceFirst(oldChar: Char, newChar: Char, ignoreCase: Boolean = false): String

Returns a new string with the first occurrence of oldChar replaced with newChar.

JS

fun String.replaceFirst(oldChar: Char, newChar: Char, ignoreCase: Boolean = false): String

fun String.replaceFirst(oldValue: String, newValue: String, ignoreCase: Boolean = false): String

Returns a new string obtained by replacing the first occurrence of the oldValue substring in this string with the specified newValue string.