The General Programming Paradigm

• Objects are opened or created

• Then accessed

• Finally closed

• Example
  CALL h5fopen_f (“myfile”, H5F_ACC_RDWR_F, file_id, err)
  
  CALL h5dopen_f (file_id, “velocity”, dset_id, err)
  CALL h5dread_f (dset_id, H5T_NATIVE_INTEGER, data, err)
  CALL h5dclose_f (dset_id, error)
  CALL h5fclose_f (file_id, error)

Anything that can be set from the API can also be queried

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