Class: GeneGenie::TemplateEvaluator

Inherits:
Object
  • Object
show all
Defined in:
lib/gene_genie/template_evaluator.rb

Overview

A Template Evaluator provides certain analysis and useful information about templates. A template is always treated internally as an Array of Hashes.

Since:

  • 0.0.2

Instance Method Summary collapse

Constructor Details

#initialize(template) ⇒ TemplateEvaluator

Returns a new instance of TemplateEvaluator.

Since:

  • 0.0.2



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# File 'lib/gene_genie/template_evaluator.rb', line 7

def initialize(template)
  @template = template
end

Instance Method Details

#hash_valid?(hash_under_test) ⇒ Boolean

Verifies that the given hash conforms to the constraints specified in the hash template

Returns:

  • (Boolean)

Since:

  • 0.0.2



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# File 'lib/gene_genie/template_evaluator.rb', line 32

def hash_valid?(hash_under_test)
  begin
    @template.each_with_index do |h, index|
      h.each do |k, v|
        return false unless hash_under_test[index][k]
        return false unless hash_under_test[index][k] >= v.min
        return false unless hash_under_test[index][k] <= v.max
      end
    end
  rescue
    return false
  end
  return true
end

#permutations ⇒ Object

Since:

  • 0.0.2



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# File 'lib/gene_genie/template_evaluator.rb', line 11

def permutations
  @permutations ||= @template.map { |hash|
    hash.map { |_, v| v.size }.reduce(:*)
  }.reduce(:*)
end

#recommended_size ⇒ Object

Suggests a recommended GenePool size. returns a minimum of 6 unless the total number of permutations is below that. Otherwise, returns 1/1000th of the number of permutations up to a maximum of 20000

Since:

  • 0.0.2



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# File 'lib/gene_genie/template_evaluator.rb', line 22

def recommended_size
  [
    [((Math.log(permutations))**2).ceil, 20000].min,
    [6, permutations].min,
    3
  ].max
end