Contents

require 'darkext/array'

class Integer
  # Computes the factorial of the Integer
  def fact
    raise ArgumentError.new("Cannot compute factorial of negative number") if 0 > self
    return 1 if self.zero?
    return (1..self).to_a.product
  end
end

Version data entries

35 entries across 35 versions & 1 rubygems

Version	Path
darkhelmet-darkext-0.10.0	lib/darkext/integer.rb
darkhelmet-darkext-0.3.0	lib/darkext/integer.rb
darkhelmet-darkext-0.3.1	lib/darkext/integer.rb
darkhelmet-darkext-0.3.2	lib/darkext/integer.rb
darkhelmet-darkext-0.4.0	lib/darkext/integer.rb
darkhelmet-darkext-0.4.1	lib/darkext/integer.rb
darkhelmet-darkext-0.4.2	lib/darkext/integer.rb
darkhelmet-darkext-0.4.3	lib/darkext/integer.rb
darkhelmet-darkext-0.5.0	lib/darkext/integer.rb
darkhelmet-darkext-0.5.1	lib/darkext/integer.rb
darkhelmet-darkext-0.5.2	lib/darkext/integer.rb
darkhelmet-darkext-0.5.3	lib/darkext/integer.rb
darkhelmet-darkext-0.5.4	lib/darkext/integer.rb
darkhelmet-darkext-0.5.5	lib/darkext/integer.rb
darkhelmet-darkext-0.5.6	lib/darkext/integer.rb
darkhelmet-darkext-0.6.0	lib/darkext/integer.rb
darkhelmet-darkext-0.7.0	lib/darkext/integer.rb
darkhelmet-darkext-0.7.1	lib/darkext/integer.rb
darkhelmet-darkext-0.7.2	lib/darkext/integer.rb
darkhelmet-darkext-0.7.3	lib/darkext/integer.rb