CASTING IN ABAP

[waqasalikhan]

hello ,

my question is about narrow and wide casting.

when i read from text books of sap its appear to be in opposite definition according to in scn search (experts opinion )?

thank-you
regards

student.

[former_member202771]

Hi Waqas,

When you loose attributes during assignment, it is narrow casting. And When you gain new attributes, it is widening.

Does text books say it differently ?

Thanks,

Anil

[Sandra_Rossi]

No, it's exactly the same definition for ABAP and for "all" other OO languages (I don't know all of course)

[waqasalikhan]

thank-you  

[retired_member]

To be honest, in some early stage of ABAP Objects we said in fact

"Narrowing Cast" for "Up Cast" and "Widening Cast" for "Down Cast".

Since Release 7.0, we do it as the rest of the world and say

"Narrowing Cast" for "Down Cast" and "Widening Cast" for "Up Cast".

This is even documented!

Terminology change for narrowing and widening casts

So you might have read old SAP textbooks

[waqasalikhan]

great thank u ..