Method qustion

[Former Member]

Hi,

i watch code that use method and i dont understand it.

gx_table ?= cl_abap_typedescr=>describe_by_data( itab )

1. describe_by_data is a method so why i don't use it like fm

with call Method with import and export .

2. what is this ?= sign .

Regards

[Former Member]

HI

gx_table ?= cl_abap_typedescr=>describe_by_data( itab )

here when you are dealing with classes and objects as you asked

describe_by_data is method of the class cl_abap_typedecr and

you are casting the result to the gx_table.

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Regards

Gangadhar

[Former Member]

> i watch code that use method and i dont understand it.

>

> gx_table ?= cl_abap_typedescr=>describe_by_data( itab )

>

> 1. describe_by_data is a method so why i don't use it like fm

> with call Method with import and export .

>

that is another way of calling methods.

the same method can be called like this also..

CALL METHOD cl_abap_typedescr=>describe_by_data
  EXPORTING
    p_data      = itab
  RECEIVING
    p_descr_ref = gx_table.

> 2. what is this ?= sign .

>

? is used of casting.