problem in oops concept

[Former Member]

hi,

I am using NW 7.1 trial version. when I try to do a simple ALV prog in WebDyn .

DATA: lr_column_settings TYPE REF TO if_salv_wd_column_settings,

lr_input_field TYPE REF TO cl_salv_wd_uie_input_field.

lr_column_settings ?= l_value.

lr_column = lr_column_settings->get_column( 'PRICE' ).

when I try to execute this error is coming says, "spelling or comma error ?= is not valid" in the particular line where we enter the ?= operator...

its working in ECC6.0

kindly tell me the way...

If any one knows better link to learn oops concept in ABAP tell me...

thanks in advance

[thomas_jung · Accepted solution]

>I am using NW 7.1 trial version.

I doubt it since there is no NW 7.1 ABAP trial. I think you mean that you are using the 7.0 Enhancement Package 1 trial (7.01).

The ?= syntax is still perfectly valid in 7.01. I have to assume you have a syntax error somewhere else in your coding that is throwing off the compiler. For instance what is l_value defined as? I don't see a declaration in code snippet.

[Former Member · Accepted solution]

yes its NW7.0. sorry for the wrong info.

the local value is not l_value here its different. anyhow I checked the syntax. let me try this once again..

can u give me some useful links to prepare oops concept in abap...

Thanks in advance

[Former Member · Accepted solution]

Hi ,

here the link for help .sap

this will clear your basics also try to get understand BC401 document.It will clear your all concept and if you have any issues then we have forum for abap object .

http://help.sap.com/saphelp_nw70/helpdata/en/c3/225b5654f411d194a60000e8353423/content.htm

regards

PG

[Former Member · Accepted solution]

thank u yaar..