Class: Ilp::Objective

Inherits:
Object
  • Object
show all
Defined in:
lib/ruby-cbc/ilp/objective.rb

Constant Summary collapse

MINIMIZE = 
:min
MAXIMIZE = 
:max

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(terms, objective_function = MAXIMIZE) ⇒ Objective

Returns a new instance of Objective.



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# File 'lib/ruby-cbc/ilp/objective.rb', line 7

def initialize(terms, objective_function = MAXIMIZE)
  @terms = terms
  @terms = Ilp::Term.new(@terms) if @terms.is_a? Ilp::Var
  @terms = Ilp::TermArray.new([@terms]) if @terms.is_a? Ilp::Term
  @terms.normalize!
  @terms.send(:pop_constant)
  @objective_function = objective_function
end

Instance Attribute Details

#objective_function ⇒ Object (readonly)

Returns the value of attribute objective_function.



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# File 'lib/ruby-cbc/ilp/objective.rb', line 6

def objective_function
  @objective_function
end

#terms ⇒ Object (readonly)

Returns the value of attribute terms.



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# File 'lib/ruby-cbc/ilp/objective.rb', line 6

def terms
  @terms
end

Instance Method Details

#to_s ⇒ Object 



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# File 'lib/ruby-cbc/ilp/objective.rb', line 16

def to_s
  "#{(@objective_function == :max ? 'Maximize' : 'Minimize')}\n  #{terms}"
end