Examples with iterators

IV.2.3 Examples with iterators

One presents one example illustrating the use of some of the iterators defined in DataBase class. The following lines print the elements connectivity:

   db.each_elemId do |elemId|
      STDOUT.printf(" %d =>",elemId)
      db.each_nodeOfElement(elemId) do |nodeId|
         STDOUT.printf(" %d",nodeId)
      end
      STDOUT.printf("' n")
   end

Two iterators have been used in the calculation: “each_elemId” and “each_nodeOfElement”. A second version of the loop restricts the printing of connectivity to corner nodes only.

The example is given in file “RUBY/EX16/elemConnectivity.rb”.

An iterator is also used in example “RUBY/EX03/properties.rb”. In that example, one uses the “fillCard” method of NastranDb class to obtain the definition of the properties in the model:

    db.each_propertyId do |id|
        puts "Property",id
        card=db.fillCard("Property",id)
        puts card
    end

(See section III.1.1.5 for the definition of “fillCard” method.)

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