kotlin.text.indexOf

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.

Returns An index of the first occurrence of 登录查看完整内容