module Ciphers
Constants
- LATIN
- VERSION
Public Class Methods
alphabet_from(string)
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# File lib/ciphers.rb, line 8 def self.alphabet_from(string) raise ArgumentError.new("Argument must be at most #{LATIN.length} characters long") unless string.length <= 26 chars = string.upcase.chars raise ArgumentError.new("Argument must not contain duplicate letters") unless chars.uniq == chars if chars.length < 26 chars + (LATIN - chars) else chars end end