class Fixnum
Public Instance Methods
num_to_letter()
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Converts the number (1 <= x <= 26) to a letter 1 => A, 9 => I, 0 has no corresponding letter
# File lib/more_ruby/fixnum.rb, line 6 def num_to_letter raise "Do not call num_to_letter with a number that is not between 1 and 26" unless self >= 1 && self <= 26 (self.to_i + 64).chr end