ABAP 一组关键字 IS BOUND, IS NOT INITIAL 和 IS ASSIGNED 的用法辨析
ABAP 里的 IS BOUND, IS NOT INITIAL 和 IS ASSIGNED 这组关键字,如果平时不留心,很容易理解地似是而非。今天我们就来说一说它们的区别。
先把 SAP 帮助文档抄过来:
IS BOUND
It checks whether a reference variable contains a valid reference. A data reference variable that contains a stack reference, on the o...