1.什么是abap指针: 在abap里面,fieldsymbol就相当于c语言的指针。如果你定义并且分配了相应的结构或者变量给它,其实它就指向这个结构或者变量的地址,如果修改了fieldsymbol的值,则相应结构或者变量的值也随之更改。 2.如何定义指针: 基本形式:field-symbols. 附加信息: 1...type:定义一个数据类型,然后定义指针 2....
语法:FIELD-SYMBOLS TYPE ANY[TABLE]. 注意:利用TYPE ANY定义的泛型Field Symbol,在程序中无法静态地调用地址来使用。 (2)定义-Fully TYPE(全类型) 特点:当定义Field Symbol时就以固定形式定义数据对象。 语法:FILED SYMBOLS TYPE 表; FIELD SYMBOLS LIKE LINE OF...
Casting with field symbol type REPORT demo_field_symbols_casting. TYPES: BEGIN OF t_date, year(4) TYPE n, month(2) TYPE n, day(2) TYPE n, END OF t_date. FIELD-SYMBOLS <fs> TYPE t_date. ASSIGN sy-datum TO <fs> CASTING. WRITE / sy-datum. SKIP. WRITE: / <fs>-year , / <...
Field symbols in ABAP are similar to pointers in other programming languages. However, pointers (as used in PASCAL or C) differ from ABAP field symbols in their reference syntax. The statement ASSIGN f to <fs> assigns the field f to field symbol <fs>. The field symbol <fs> then "points...
REPORT demo_field_symbols_stat_as_of2 . FIELD-SYMBOLS <fs> TYPE ANY. DATA: BEGIN OF line, a TYPE c VALUE '1', b TYPE c VALUE '2', c TYPE c VALUE '3', d TYPE c VALUE '4', e TYPE c VALUE '5', f TYPE c VALUE '6', ...
LOOP AT gt_line_n ASSIGNING FIELD-SYMBOL(<ls_n>). lv_tabix = lv_tabix + 1. lv_edit = lv_tabix MOD 2. "编辑状态间隔 lv_col = lv_tabix MOD 8. "颜色顺序 CASE lv_edit. WHEN 1. lv_style = cl_gui_alv_grid=>mc_style_disabled. ...
ASSIGN COMPONENT ls_sval-fieldname OF STRUCTURE ls_var TO FIELD-SYMBOL(<lv_value>). IF sy-subrc = 0. <lv_value> = ls_sval-value. ENDIF. ENDLOOP. DATA: lv_updkz(1). SELECT SINGLE * FROM ztsel_variant INTO ls_var_read WHERE varid = ls_var-varid ...
ITAB2是中转表 ITAB3是最后结果表 DATA: BEGIN OF ITAB OCCURS 0,COL1 TYPE I,COL2 TYPE I,COL3 TYPE I,FLAG TYPE CHAR1,END OF ITAB.ITAB-COL1 = 1.ITAB-COL2 = 2 .ITAB-COL3 = 3.APPEND ITAB.ITAB-COL1 = 1.ITAB-COL2 = 2 .ITAB-COL3 = 4.APPEND ITAB.ITAB-...
代码语言:javascript 复制 FIELD-SYMBOL:<LFS_TAB>LIKELINEOFITAB.LOOPATitabASSIGNING<LFS_TAB>...ENDLOOP. 740之后-指针声明 代码语言:javascript 复制 LOOPATITABASSIGNINGFIELD-SYMBOL(<LFS_TAB>).…ENDLOOP.READTABLEitab assigning field-symbol(<line2>)......
●You can also force a field symbol to take different technical properties than those of the field assigned to it (casting). The flexibility of field symbols provides elegant solutions to certain problems. On the other hand, it does mean that errors can easily occur. Since fields are not ass...