Class: Multipri::PrimesTable

Inherits:
Object
  • Object
show all
Defined in:
lib/multipri/primes_table.rb

Defined Under Namespace

Classes: Row

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(size) ⇒ PrimesTable

Returns a new instance of PrimesTable.



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# File 'lib/multipri/primes_table.rb', line 29

def initialize(size)
  @size = size
  @generated = false
end

Class Method Details

.generate(size) ⇒ Object 



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# File 'lib/multipri/primes_table.rb', line 25

def self.generate(size)
  new(size).generate
end

Instance Method Details

#generate ⇒ Object 



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# File 'lib/multipri/primes_table.rb', line 34

def generate
  primes = Prime.new.first(@size)
  @row_titles = primes
  @rows = primes.map do |p|
    Row.new(p, primes.map { |q| p * q })
  end
  @generated = true
  self
end

#row_titles ⇒ Object 



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# File 'lib/multipri/primes_table.rb', line 49

def row_titles
  generate unless generated?
  @row_titles
end

#rows ⇒ Object 



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# File 'lib/multipri/primes_table.rb', line 44

def rows
  generate unless generated?
  @rows
end