Number to text, in German!
Handles positive and negative numbers up to 126 digits, with unlimited decimals.
Just create an instance of the class and use the #to_german method to convert numbers,
it accepts floats, integers and strings, and will raise subclasses of ArgumentError if
it is not able to handle what you pass in.
require 'ziffern'
converter = Ziffern.new
converter.to_german 1 # => "eins"
converter.to_german -5 # => "minus fünf"
converter.to_german 12345 # => "zwölftausenddreihundertfünfundvierzig"
converter.to_german 99.99 # => "neunundneunzig Komma neun neun"
converter.to_german 0.00 # => "null Komma null"
converter.to_german '0.00' # => "null Komma null null"
converter.to_german 10**125 # => "einhundert Vigintilliarden"
converter.to_german 'invalid' # ~> Ziffern::InvalidNumberError
converter.to_german 10**126 # ~> Ziffern::TooLargeNumberError# ...is the default task
rake