indexOf

Common
JVM
JS
Native
1.0
fun CharSequence.indexOf(
    char: Char,
    startIndex: Int = 0,
    ignoreCase: Boolean = false
): Int

Returns the index within this string of the first occurrence of the specified character, starting from the specified startIndex.

Parameters

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

Return An index of the first occurrence of char or -1 if none is found.

Common
JVM
JS
Native
1.0
fun CharSequence.indexOf(
    string: String,
    startIndex: Int = 0,
    ignoreCase: Boolean = false
): Int

Returns the index within this char sequence of the first occurrence of the specified string, starting from the specified startIndex.

Parameters

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

Return An index of the first occurrence of string or -1 if none is found.