# PetscBag

PETSc object that manages a collection of user data including parameters. A bag is essentially a C struct with serialization (you can save it and load it from files).

### Synopsis

    typedef struct _n_PetscBag*     PetscBag;

### Sample Usage

         typedef struct {

            PetscInt     height;

            PetscScalar  root;

            PetscReal    byebye;

         } MyParameters;

         PetscBag     bag;

         MyParameters *params;

          $      ierr = PetscBagCreate(PETSC_COMM_WORLD,sizeof(MyParameters),&bag);

         ierr = PetscBagGetData(bag,(void **)&params);

         ierr = PetscBagSetName(bag,"MyParameters");

         ierr = PetscBagRegisterInt(bag,&params.height,22,"height","Height of the water tower");

            .seealso:  PetscBagSetName(), PetscBagGetName(), PetscBagView(), PetscBagLoad(), PetscBagGetData()

PetscBagRegisterReal(), PetscBagRegisterInt(), PetscBagRegisterTruth(), PetscBagRegisterScalar() PetscBagSetFromOptions(), PetscBagRegisterVec(), PetscBagCreate(), PetscBagDestroy(), PetscBagRegisterEnum()

Level:beginner
Location:include/petscbag.h
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