v7.2 (2019-07)

Deprecation of Python 2.7

• Important Notice Python 2.7 will be obsolete by the end of 2019. There will be at most one more release supporting python 2.7.

Platform changes

• Ubuntu 18.10 -> Ubuntu 19.04
• Support compilation from sources on Visual Studio 2019
• Dropped support for python 3.5 on Windows.

Dependencies updates

• CBC 2.10.1 -> 2.10.3
• Protobuf 3.7.1 -> 3.8.0

CP-SAT

• Multiple improvements focusing on the search, the implementation of the parallelism, and the connection to the linear relaxation
• Added LinearExpr.Sum() and LinearExpr.ScalProd() APIs in python
• Deprecate IntVar[].Sum() and IntVar[].ScalProd() APIs in C#
• C++: remove SolveWithModel as it was a duplicate of SolveCpModel()
• add CpModel.addGreaterThan and CpModel.addLessThan methods to the Java API

Linear Solver:

• Add MPSolver.SetHint() in non C++ languages (Supported by SCIP, Gurobi)
• Add MPSolver.SetNumThreads() for non C++ languages (supported by CBC, Gurobi, SCIP)
• Rewrite support for scip 6.0.1

Reference manuals

See http://google.github.io/or-tools/

• We have added doxygen and pdoc3 based reference manuals for all languages and all tools (algorithms, routing, graph, linear_solver, and CP-SAT).
• Documentation is complete for C++ (all products) and CP-SAT (C++, Python, Java).
• We are in the process of exporting all C++ documentation to Python and Java.
• .NET documentation is lacking, and we have no solution in the foreseeable future to improve this. We have kept it as it still shows the available API.
• Some non C++ APIs show the link to SWIG through the use of SWIGTYPE_* object in the signatures. We will eliminate all these in the future. Please consider that these methods are not usable.