Module: GamesDice::ProbabilityValidations::ClassMethods

Defined in:
lib/games_dice/prob_helpers.rb

Instance Method Summary collapse

Instance Method Details

#prob_ao_to_h(a, o) ⇒ Object

Convert array,offset notation to hash



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# File 'lib/games_dice/prob_helpers.rb', line 48

def prob_ao_to_h a, o
  h = Hash.new
  a.each_with_index { |v,i| h[i+o] = v if v > 0.0 }
  h
end

#prob_h_to_ao(h) ⇒ Object

Convert hash to array,offset notation

Raises:

  • (ArgumentError) 


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# File 'lib/games_dice/prob_helpers.rb', line 37

def prob_h_to_ao h
  rmin,rmax = h.keys.minmax
  o = rmin
  s = 1 + rmax - rmin
  raise ArgumentError, "Range of possible results too large" if s > 1000000
  a = Array.new( s, 0.0 )
  h.each { |k,v| a[k-rmin] = Float(v) }
  [a,o]
end