ABAP Inline Declarations
ABAP inline declarations are a feature introduced in ABAP 7.40, which allows for more concise and readable code. Instead of pre-declaring variables at the beginning of a program or method, you can declare and use them simultaneously.
Basic Example
DATA(lv_number) = 5.
WRITE: / lv_number.
In the example above, lv_number is declared and assigned the value 5 in a single statement.
Inline Declarations in LOOP
LOOP AT lt_table INTO DATA(ls_row).
WRITE: / ls_row-field.
ENDLOOP.
Here, ls_row is declared inline within the LOOP statement, making the code cleaner and more maintainable.
Inline Declarations with SELECT
SELECT * FROM mara INTO TABLE @DATA(lt_mara).
LOOP AT lt_mara INTO DATA(ls_mara).
WRITE: / ls_mara-matnr.
ENDLOOP.
This example shows the inline declaration of an internal table lt_mara and a work area ls_mara in a single statement.
Inline Declarations with Field-Symbols
FIELD-SYMBOLS <fs_wa> TYPE any.
ASSIGN ls_structure TO <fs_wa>.
WRITE: / <fs_wa>-field.
Inline declarations can also be used with field-symbols, as shown in this example.
Benefits
- Improves readability and maintainability of the code.
- Reduces the need for pre-declarations.
- Makes the code more concise.
Conclusion
Inline declarations are a powerful feature in ABAP that can help you write cleaner and more efficient code. They simplify the declaration process, especially in loops and select statements.