tmp< T >
 

Hi FOAMers
Can any one tell me "tmp< T >" class is for what?
It seems it is "A class for managing temporary objects." but can any one explain for me what is difference between
const GeometricField< Type, fvsPatchField, surfaceMesh >
and
const tmp< GeometricField< Type, fvsPatchField, surfaceMesh > >
Any help will be appreciated
Best regards

Ata

See http://www.cfd-online.com/Forums/ope...acro-pain.html

Thanks
 

Hi Anton Kidess
Thank you very much
Best regards

Ata

difference between tmp<T> and &T
 

Hi Anton Kidess
So, would you please tell me what is difference between tmp<T> and passing a reference (&T)?
Thank you very much
Best regards

Ata

tmp is used for returning *local variables* without copying. You can't pass a reference because the data it points to is going out of scope. There's an article on the wiki here:

http://openfoamwiki.net/index.php/OpenFOAM_guide/tmp

Thanks
 

Hi David
Thank you very much
Best regards

Ata