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danrega
2024-12-11 16:13:50 +01:00
parent 35789367b6
commit 8c42134f33
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05_Constructor_Expressions.md
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@@ -6,8 +6,6 @@
- [Introduction](#introduction)
- [VALUE](#value)
- [CORRESPONDING](#corresponding)
- [DEFAULT Addition When Using MAPPING](#default-addition-when-using-mapping)
- [CORRESPONDING with Lookup Table](#corresponding-with-lookup-table)
- [NEW](#new)
- [CONV](#conv)
- [EXACT](#exact)
@@ -578,9 +576,8 @@ two statements are not the same:
>MOVE-CORRESPONDING struc1 TO struc2.
>```
<p align="right"><a href="#top">⬆️ back to top</a></p>
### DEFAULT Addition When Using MAPPING
**`DEFAULT` addition when using `MAPPING`**
- This addition allows the assignment of values for a target component based on an expression (which is evaluated before the `CORRESPONDING` expression).
- `DEFAULT` can be preceded by the source component. In this case, the source component's value is assigned to the left-hand side only if the source component is not initial. If it is initial, the value of the expression following the `DEFAULT` addition is assigned.
@@ -664,9 +661,8 @@ struc2 = CORRESPONDING #(
*1 a hallo 2 d 30
```
<p align="right"><a href="#top">⬆️ back to top</a></p>
### CORRESPONDING with Lookup Table
**`CORRESPONDING` with lookup table**
- Constructs an internal table by joining an internal table and a lookup table and comparing their components
- Syntax pattern of the variant:
@@ -689,7 +685,7 @@ struc2 = CORRESPONDING #(
- The target internal table should match the type of `itab`.
- The search must use a sorted table key or a hash key:
- Omit the `KEY` addition only if the lookup table `lookup_tab` is sorted or hashed.
- When using KEY, specify either:
- When using `KEY`, specify either:
- A secondary key.
- The primary key's default name `primary_key` or an alias, but only for sorted or hashed lookup tables.
- When used:
@@ -736,7 +732,7 @@ DATA(it2) = CORRESPONDING it_type( it1_copy FROM lookup_tab USING character = ch
ASSERT it2 = it1.
"Examples assignments to demonstrate the KEY and MAPPING additions
"Example assignments to demonstrate the KEY and MAPPING additions
TYPES:
BEGIN OF s2,
a TYPE string,
@@ -813,7 +809,6 @@ it3 = CORRESPONDING #( it3 FROM lookup_table USING KEY sk c = a d = b ).
*2a 2b --- --- --- ---
*3a 3b --- --- 7a ---
"Notes on the example assignment:
"- See above. Here, the MAPPING addition is included. It is used to specify
" mapping relationships for the assignments. The example specifies a mapping