kotlin.text.startsWith

fun CharSequence.startsWith(
    char: Char, 
    ignoreCase: Boolean = false
): Boolean

Returns true if this char sequence starts with the specified character.

fun CharSequence.startsWith(
    prefix: CharSequence, 
    ignoreCase: Boolean = false
): Boolean

Returns true if this char sequence starts with the specified prefix.

fun CharSequence.startsWith(
    prefix: CharSequence, 
    startIndex: Int, 
    ignoreCase: Boolean = false
): Boolean