class Integer
Public Instance Methods
to_alphabet()
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map this number to a lowercased alphabet letter 0-25 goes to a-z 26-52 goes to aa-zz, etc.
# File lib/functional_support/core_ext/integer.rb, line 5 def to_alphabet qm = divmod 26 return _convert_to_letter qm.last if qm.first.abs.zero? return qm.first.to_alphabet + _convert_to_letter(qm.last) end
Private Instance Methods
_convert_to_letter(v)
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# File lib/functional_support/core_ext/integer.rb, line 13 def _convert_to_letter(v) raise Math::DomainError, "#{v} is outside the range of the English alphabet" if v > 25 @@_the_alphabet_of_lowercase_letters ||= ('a'...'z').to_a.append('z') @@_the_alphabet_of_lowercase_letters[v.to_i.abs] end