types:
begin of my_struct,
comp_a type i,
comp_b type f,
end of my_struct.
data:
my_data type my_struct,
descr_ref type ref to cl_abap_structdescr.
data: begin of itab occurs 0 ,
f1 ,
f2 ,
end of itab.
field-symbols:
type abap_compdescr.
start-of-selection.
descr_ref ?= cl_abap_typedescr=>describe_by_data( my_data ).
loop at descr_ref->components assigning .
write: / -name.
endloop.
descr_ref ?= cl_abap_typedescr=>describe_by_data( itab ).
loop at descr_ref->components assigning .
write: / -name.
endloop.
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