class Fixnum

Public Instance Methods

num_to_letter() click to toggle source

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