CTCase

Utility for converting letters to upper/lower case in a constant-time manner (in terms of work performed).

Both CTCase.uppercase and CTCase.lowercase perform the same number of operations no matter the input (i.e. they do not return early).

NOTE: Only characters where Char.isLetter is true are taken from the provided table.

e.g. (NOT constant-time operation)

fun String.containsChar(char: Char): Boolean {
    for (c in this) {
        if (c == char) return true
    }
    return false
}

e.g. (YES constant-time operation)

fun String.containsChar(char: Char): Boolean {
    var result = false
    for (c in this) {
        result = if (c == char) true else result
    }
    return result
}

Parameters

Throws