Class: Gotenberg::Utilities::Index
- Inherits:
-
Object
- Object
- Gotenberg::Utilities::Index
- Defined in:
- lib/gotenberg/utilities/index.rb
Class Method Summary collapse
Class Method Details
.to_alpha(index, alpha = '') ⇒ Object
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# File 'lib/gotenberg/utilities/index.rb', line 4 def self.to_alpha index, alpha = '' return '' if index <= 0 until index.zero? pointer = (index - 1) % 26 index = ((index - pointer) / 26).to_i alpha = (65 + pointer).chr + alpha end alpha end |