System.Classes.TListAssignOp
Delphi
TListAssignOp = (laCopy, laAnd, laOr, laXor, laSrcUnique, laDestUnique);
C++
enum DECLSPEC_DENUM TListAssignOp : unsigned char { laCopy, laAnd, laOr, laXor, laSrcUnique, laDestUnique };
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| enum | public | System.Classes.pas System.Classes.hpp |
System.Classes | System.Classes |
Description
TListAssignOp indicates how two lists should be merged.
TListAssignOps describes how the Assign method combines a source and destination list:
| Value | Meaning |
|---|---|
|
laAnd |
Removes all elements from the destination list that do not appear in the source list. The destination list ends up containing the intersection of the two lists. |
|
laCopy |
Overwrites the destination list with the source list. |
|
laDestUnique |
Removes all elements from the destination list that appear in the source list. The destination list ends up containing the elements unique to the original destination list. (same as laOr followed by laXor) |
|
laOr |
Adds any elements from the source list that do not already appear in the destination list. The destination list ends up containing the union of the two lists. |
|
laSrcUnique |
Replaces the destination list with those elements of the source list that do not appear in the destination list. (same as laAnd followed by laXor) |
|
laXor |
Removes all elements from the destination list that appear in the source list and adds any elements from the source list that do not appear in the original destination list. The destination list ends up with the elements unique to both the source and destination lists. |