BSP/MVC: Naming of Class Atributes

Question

Hi there
developing BSP/MVC applications, I wonder which is a good naming standard for new class attributes of a controller or model class. saw in the examples that most attributes start with "M_" not only the inherited ones but also newly added.
as far as I remember, attributes starting with "M_" have a special meaning, can't fracking remember which one, though
So my questions:
1. what kind of attributes start or shout start with "M_"
2. what's a useful naming standard for attributes in classes
thanks in advance
Gerald

Answer 1

you just create a constructor method for this class and pass the column definition from your application to this class while instantiating the same .
sample.
  CALL FUNCTION 'TR_NAMETAB_GET'
    EXPORTING
      iv_tabname                 = 'SFLIGHT'
      iv_get_lengths_in_charmode = ' '
      iv_get_texts               = 'X'
    IMPORTING
      et_dfies                   = lt_dfies
    EXCEPTIONS
      not_found                  = 1
      OTHERS                     = 2.
  IF sy-subrc <> 0.
*--- Do nothing in this particular case
  ENDIF.
  LOOP AT lt_dfies INTO ls_dfies.
    wa_pers_tab-field_name = ls_dfies-fieldname.
    wa_pers_tab-text       = ls_dfies-reptext.
    wa_pers_tab-colpos     = sy-tabix.
    wa_pers_tab-invisible  = ' ' .
    APPEND wa_pers_tab TO pers_tab.
  ENDLOOP.
ENDIF .
SORT pers_tab BY colpos .
CREATE OBJECT iterator TYPE ycl_tv_iterator
  EXPORTING
    col_def = pers_tab .
and in the column definition method you can use this to build the columns
LOOP AT m_col_def INTO wa_col_def  .
    APPEND INITIAL LINE TO p_column_definitions ASSIGNING <def>.
    <def>-columnname = wa_col_def-field_name.
    <def>-title      = wa_col_def-text .
  ENDLOOP .