How to use the standard C++ vectors in OpenFOAM

Bruce Hartley · October 12, 2011, 23:35

I want to set up some standard C++ type vectors in OpenFoam but OpenFoam has defined its own type of a vector.

How do I use the stadard C++ definitions to set up a vector of a type which I have defined?

Something like vector<mystructure> variableName;

and use the standard C++ methods on this variable.

deepsterblue · October 13, 2011, 00:16

There's nothing stopping you from using STL vectors - that's why namespaces were invented in the first place.

The vector class in OpenFOAM is defined in the 'Foam' namespace, so it's actually a Foam::vector class. To use the STL version, simply use std::vector, or even plain ::vector.

wenxu · January 29, 2015, 23:44

Then how to convert OF scalarList to STL c++ vector<double>?

jhoepken · January 30, 2015, 04:51

There are simpler solutions for sure, but if anything else fails, just loop over the scalarList and set the particular element of the std::vector to the respective element of scalarList.

wenxu · January 30, 2015, 07:12

Thank you!

Yes, because they in the different namespace, we can use std::vector<double> to substitute scalarList.

October 12, 2011, 23:35	How to use the standard C++ vectors in OpenFOAM	#1
Bruce Hartley New Member Bruce Hartley Join Date: Jun 2011 Posts: 9 Rep Power: 15	I want to set up some standard C++ type vectors in OpenFoam but OpenFoam has defined its own type of a vector. How do I use the stadard C++ definitions to set up a vector of a type which I have defined? Something like vector<mystructure> variableName; and use the standard C++ methods on this variable.

October 13, 2011, 00:16		#2
deepsterblue Senior Member Sandeep Menon Join Date: Mar 2009 Location: Amherst, MA Posts: 403 Rep Power: 25	There's nothing stopping you from using STL vectors - that's why namespaces were invented in the first place. The vector class in OpenFOAM is defined in the 'Foam' namespace, so it's actually a Foam::vector class. To use the STL version, simply use std::vector, or even plain ::vector. __________________ Sandeep Menon University of Massachusetts Amherst https://github.com/smenon

January 30, 2015, 04:51		#4
jhoepken Senior Member Jens Höpken Join Date: Apr 2009 Location: Duisburg, Germany Posts: 159 Rep Power: 17	There are simpler solutions for sure, but if anything else fails, just loop over the scalarList and set the particular element of the std::vector to the respective element of scalarList. __________________ Blog: sourceflux.de/blog "The OpenFOAM Technology Primer": sourceflux.de/book Twitter: @sourceflux_de Interested in courses on OpenFOAM?

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January 29, 2015, 23:44		#3
wenxu Senior Member Freedom Join Date: May 2014 Posts: 209 Rep Power: 13	Then how to convert OF scalarList to STL c++ vector<double>?

January 30, 2015, 07:12		#5
wenxu Senior Member Freedom Join Date: May 2014 Posts: 209 Rep Power: 13	Thank you! Yes, because they in the different namespace, we can use std::vector<double> to substitute scalarList.