My Constraint Programming Blog

Comet version 2.1.0 is released. It can be downloaded here.

From the release notes (in the distribution):

Major additions since 2.0.1:

• New Version of Comet Studio IDE
  
• New Version of User Manual
  
• New Scheduling Resources

Detailed list of improvements:

• New Version of Comet Studio IDE
  
• New Version of User Manual, covering:
  • set variables in CP
    
  • soft global constraints in CP
    
  • more aspects of scheduling in CP
    
  • over-constrained problems
    
  • concurrency
    
  • visualization
    
  • interfacing with databases, XML, C++ and Java
  
  
• General
  • Extended getSnapshot method for set variables
    
  • switch instruction now works with enumerated types
    
  • Extended onFailure to work with all types of selectors
    
  • Made possible to create set of arrays
    
  • Added copy method for set{string}
    
  • Added directory browsing support (classes FSDirectory and FSFile on Core module)
    
  • Added a reset method to the C++ API so that one can parse a Comet model once and solve several times with the same input
    
  • Added a method isEmpty() for sets
    
  • Added support for dictionaries of Objects (including string, Integer, Float, Boolean)
    
  • Allow definition of sets defined over enumerated type
    
  • Added filename option for seed tracking with -t and -r flags
    
  • Add the methods getNAN(), getPInf() and getNInf() to return the IEEE double representation for Not-a-number (NaN), +infinity, and -infinity
    
  • Allows equality testing between two ranges
  
  
• Constraint Programming
  • Reduced cost on soft-cardinality constraints
    
  • More flexibility on cardinality constraints: not all values from the domains need to be constrained in cardinality
    
  • Added built-in guarded constraints
    
  • Added CostRegular and a new propagator for Regular
    
  • Allowed access to min/max in solution
    
  • Added the methods: Outcome requires(int val) and Outcome excludes(int val), on var{set{int}}
    
  • Allow declaration of arrays of var in extension
    
  • Added method function Solver getCPSolver(expr{int} e) to get the Solver from an expr{int}
    
  • Extended getSnapshot to var{set{int}} variables
    
  • Added getValue() method for var{float}
    
  • Added label(var{set{int}}[]) and getIntSetVariables() methods on Solver
  
  
• Mathematical Programming
  • Allow declaration of float LP variables without an initial lower bound
    
  • Added Method to manually release the memory of a MIP/LP solver
  
  
• Scheduling
  • New resources:
    • UnarySequence
      
    • UnaryResourcePool
      
    • UnarySequencePool
      
    • DiscreteResourcePool
    
    
  • Deprecated AlternativeUnaryResource
  
  
• Visualization
  • New VisualBarplot widget
    
  • Improved VisualHistogram behavior and functionalities
    
  • New slider widget: UISlider
    
  • Added tooltips on VisualText, VisualTextTable, etc
    
  • Added more methods to VisualActivity:
    • void setRow(int i);
      
    • void setColor(string c);
      
    • void setToolTip(string s);
    
    
  • Several enhancement to VisualGantt