Underscore declaration

[former_member194669]

While debugging one of the sap standard program i came across the following declaration

data: __seqta_tab type seqta occurs 01 with header line,
      __scope type ddenqscope,
      __wait type ddenqwait.
__wait = _wait.
__scope = _scope.

My question what is the significance of __ (2 underscore) & _ (1 underscore) declaration?

a®

[Former Member]

Hi

Nothing, just nothing.

I suppose some SAP AG developers like to assign a name starting with undercore to the program variable.

Perhaps there's a particular name convention....bu I don't believe it.

Max

[Former Member]

>

> Perhaps there's a particular name convention....bu I don't believe it.
> 
> Max

Well, it appears to be particular to generated code for enqueue/dequeue FMs. It probably made the code generator a bit easier to build.

Rob

[former_member194669]

Max,

Thanks for your quick reply.

I have seen this kind coding only in ENQUEUE & DEQUEUE fm's That where i got the above doubt.

a®

[amit_khare]

Its simply choice of individual developers for picking the naming conventions....

[naimesh_patel]

Online Help suggest to have a Letter as the first character in the variable name..

Nameing Conventions and Namespaces 
The following conventions apply for the names of all definable objects within ABAP programs, such as data types, data objects, classes, macros, or procedures: 
The name must start with a letter. Only outside of ABAP objects can the name also start with a different character. 

Regards,

Naimesh Patel

[former_member194669]

As this code coming out of system generated. i believe the __ & _ declaration don't have any significance.

a®